Class for single choice questions. More...

Inheritance diagram for assSingleChoice:

Collaboration diagram for assSingleChoice:

Public Member Functions
	__construct ( $title="", $comment="", $author="", $owner=-1, $question="", $output_type=OUTPUT_ORDER)
	assSingleChoice constructor More...

	isComplete ()
	Returns true, if a single choice question is complete for use. More...

	getThumbPrefix ()

	loadFromDb ($question_id)
	Loads a assSingleChoice object from a database. More...

	duplicate ($for_test=true, $title="", $author="", $owner="", $testObjId=null)
	Duplicates an assSingleChoiceQuestion. More...

	copyObject ($target_questionpool_id, $title="")
	Copies an assSingleChoice object. More...

	createNewOriginalFromThisDuplicate ($targetParentId, $targetQuestionTitle="")

	getOutputType ()
	Gets the single choice output type which is either OUTPUT_ORDER (=0) or OUTPUT_RANDOM (=1). More...

	setOutputType ($output_type=OUTPUT_ORDER)
	Sets the output type of the assSingleChoice object. More...

	addAnswer ( $answertext="", $points=0.0, $order=0, $answerimage="")
	Adds a possible answer for a single choice question. More...

	getAnswerCount ()
	Returns the number of answers. More...

	getAnswer ($index=0)
	Returns an answer with a given index. More...

	deleteAnswer ($index=0)
	Deletes an answer with a given index. More...

	flushAnswers ()
	Deletes all answers. More...

	getMaximumPoints ()
	Returns the maximum points, a learner can reach answering the question. More...

	calculateReachedPoints ($active_id, $pass=null, $authorizedSolution=true, $returndetails=false)
	Returns the points, a learner has reached answering the question. More...

	calculateReachedPointsFromPreviewSession (ilAssQuestionPreviewSession $previewSession)

	saveWorkingData ($active_id, $pass=null, $authorized=true)
	Saves the learners input of the question to the database. More...

	getQuestionType ()
	Returns the question type of the question. More...

	getAdditionalTableName ()
	Returns the name of the additional question data table in the database. More...

	getAnswerTableName ()
	Returns the name of the answer table in the database. More...

	setImageFile ($image_filename, $image_tempfilename="")
	Sets the image file and uploads the image to the object's image directory. More...

	deleteImage ($image_filename)
	Deletes an image file. More...

	duplicateImages ($question_id, $objectId=null)

	getRTETextWithMediaObjects ()
	Collects all text in the question which could contain media objects which were created with the Rich Text Editor. More...

&	getAnswers ()
	Returns a reference to the answers array. More...

	setExportDetailsXLS ($worksheet, $startrow, $active_id, $pass)
	{} More...

	getThumbSize ()

	setThumbSize ($a_size)

	toJSON ()
	Returns a JSON representation of the question. More...

	removeAnswerImage ($index)

	createRandomSolution ($active_id, $pass)

	getMultilineAnswerSetting ()

	setMultilineAnswerSetting ($a_setting=0)

	setSpecificFeedbackSetting ($a_feedback_setting)
	Sets the feedback settings in effect for the question. More...

	getSpecificFeedbackSetting ()
	Gets the current feedback settings in effect for the question. More...

	getSpecificFeedbackAllCorrectOptionLabel ()

	isAnswered ($active_id, $pass=null)
	returns boolean wether the question is answered during test pass or not More...

	getOperators ($expression)
	Get all available operations for a specific question. More...

	getExpressionTypes ()
	Get all available expression types for a specific question. More...

	getAvailableAnswerOptions ($index=null)
	If index is null, the function returns an array with all anwser options Else it returns the specific answer option. More...

Public Member Functions inherited from assQuestion
	__construct ( $title="", $comment="", $author="", $owner=-1, $question="")
	assQuestion constructor More...

	getShuffler ()

	setShuffler (ilArrayElementShuffler $shuffler)

	setProcessLocker ($processLocker)

	getProcessLocker ()

	fromXML (&$item, &$questionpool_id, &$tst_id, &$tst_object, &$question_counter, &$import_mapping)
	Receives parameters from a QTI parser and creates a valid ILIAS question object. More...

	toXML ($a_include_header=true, $a_include_binary=true, $a_shuffle=false, $test_output=false, $force_image_references=false)
	Returns a QTI xml representation of the question. More...

	isComplete ()
	Returns true, if a question is complete for use. More...

	questionTitleExists ($questionpool_id, $title)
	Returns TRUE if the question title exists in the database. More...

	setTitle ($title="")
	Sets the title string of the assQuestion object. More...

	setId ($id=-1)
	Sets the id of the assQuestion object. More...

	setTestId ($id=-1)
	Sets the test id of the assQuestion object. More...

	setComment ($comment="")
	Sets the comment string of the assQuestion object. More...

	setOutputType ($outputType=OUTPUT_HTML)
	Sets the output type. More...

	setShuffle ($shuffle=true)
	Sets the shuffle flag. More...

	setEstimatedWorkingTime ($hour=0, $min=0, $sec=0)
	Sets the estimated working time of a question from given hour, minute and second. More...

	setEstimatedWorkingTimeFromDurationString ($durationString)
	Sets the estimated working time of a question from a given datetime string. More...

	keyInArray ($searchkey, $array)
	returns TRUE if the key occurs in an array More...

	setAuthor ($author="")
	Sets the authors name of the assQuestion object. More...

	setOwner ($owner="")
	Sets the creator/owner ID of the assQuestion object. More...

	getTitle ()
	Gets the title string of the assQuestion object. More...

	getTitleFilenameCompliant ()
	returns the object title prepared to be used as a filename More...

	getId ()
	Gets the id of the assQuestion object. More...

	getShuffle ()
	Gets the shuffle flag. More...

	getTestId ()
	Gets the test id of the assQuestion object. More...

	getComment ()
	Gets the comment string of the assQuestion object. More...

	getOutputType ()
	Gets the output type. More...

	supportsJavascriptOutput ()
	Returns true if the question type supports JavaScript output. More...

	supportsNonJsOutput ()

	requiresJsSwitch ()

	getEstimatedWorkingTime ()
	Gets the estimated working time of a question. More...

	getAuthor ()
	Gets the authors name of the assQuestion object. More...

	getOwner ()
	Gets the creator/owner ID of the assQuestion object. More...

	getObjId ()
	Get the object id of the container object. More...

	setObjId ($obj_id=0)
	Set the object id of the container object. More...

	setExternalId ($external_id)

	getExternalId ()

	getSuggestedSolutionOutput ()

&	_getSuggestedSolution ($question_id, $subquestion_index=0)
	Returns a suggested solution for a given subquestion index. More...

	getSuggestedSolutions ()
	Return the suggested solutions. More...

	getReachedPoints ($active_id, $pass=null)
	Returns the points, a learner has reached answering the question This is the fast way to get the points directly from the database. More...

	getMaximumPoints ()
	Returns the maximum points, a learner can reach answering the question. More...

	getAdjustedReachedPoints ($active_id, $pass=null, $authorizedSolution=true)
	returns the reached points ... More...

	calculateResultsFromSolution ($active_id, $pass=null, $obligationsEnabled=false)
	Calculates the question results from a previously saved question solution. More...

	persistWorkingState ($active_id, $pass=null, $obligationsEnabled=false, $authorized=true)
	persists the working state for current testactive and testpass More...

	persistPreviewState (ilAssQuestionPreviewSession $previewSession)
	persists the preview state for current user and question More...

	validateSolutionSubmit ()

	saveWorkingData ($active_id, $pass=null, $authorized=true)
	Saves the learners input of the question to the database. More...

	moveUploadedMediaFile ($file, $name)
	Move an uploaded media file to an public accessible temp dir to present it. More...

	getSuggestedSolutionPath ()
	Returns the path for a suggested solution. More...

	getJavaPath ()
	Returns the image path for web accessable images of a question. More...

	getImagePath ($question_id=null, $object_id=null)
	Returns the image path for web accessable images of a question. More...

	buildImagePath ($questionId, $parentObjectId)

	getFlashPath ()
	Returns the image path for web accessable flash files of a question. More...

	getJavaPathWeb ()
	Returns the web image path for web accessable java applets of a question. More...

	getSuggestedSolutionPathWeb ()
	Returns the web path for a suggested solution. More...

	getImagePathWeb ()
	Returns the web image path for web accessable images of a question. More...

	getFlashPathWeb ()
	Returns the web image path for web accessable flash applications of a question. More...

	getTestOutputSolutions ($activeId, $pass)

	getUserSolutionPreferingIntermediate ($active_id, $pass=null)

	getSolutionValues ($active_id, $pass=null, $authorized=true)
	Loads solutions of a given user from the database an returns it. More...

	isInUse ($question_id="")
	Checks whether the question is in use or not. More...

	isClone ($question_id="")
	Checks whether the question is a clone of another question or not. More...

	pcArrayShuffle ($array)
	Shuffles the values of a given array. More...

	getAdditionalTableName ()
	Returns the name of the additional question data table in the database. More...

	getAnswerTableName ()
	Returns the name of the answer table in the database. More...

	deleteAnswers ($question_id)
	Deletes datasets from answers tables. More...

	deleteAdditionalTableData ($question_id)
	Deletes datasets from the additional question table in the database. More...

	delete ($question_id)
	Deletes a question and all materials from the database. More...

	getTotalAnswers ()
	get total number of answers More...

	_getTotalAnswers ($a_q_id)
	get number of answers for question id (static) note: do not use $this inside this method More...

	copyXHTMLMediaObjectsOfQuestion ($a_q_id)

	syncXHTMLMediaObjectsOfQuestion ()

	createPageObject ()
	create page object of question More...

	copyPageOfQuestion ($a_q_id)

	getPageOfQuestion ()

	setOriginalId ($original_id)

	getOriginalId ()

	fixSvgToPng ($imageFilenameContainingString)

	fixUnavailableSkinImageSources ($html)

	loadFromDb ($question_id)
	Loads the question from the database. More...

	createNewQuestion ($a_create_page=true)
	Creates a new question without an owner when a new question is created This assures that an ID is given to the question if a file upload or something else occurs. More...

	saveQuestionDataToDb ($original_id="")

	saveToDb ($original_id="")
	Saves the question to the database. More...

	setNewOriginalId ($newId)

	deleteSuggestedSolutions ()
	Deletes all suggestes solutions in the database. More...

	getSuggestedSolution ($subquestion_index=0)
	Returns a suggested solution for a given subquestion index. More...

	getSuggestedSolutionTitle ($subquestion_index=0)
	Returns the title of a suggested solution at a given subquestion_index. More...

	setSuggestedSolution ($solution_id="", $subquestion_index=0, $is_import=false)
	Sets a suggested solution for the question. More...

	_resolveInternalLink ($internal_link)

	_resolveIntLinks ($question_id)

	syncWithOriginal ()

	createRandomSolution ($test_id, $user_id)

	_questionExists ($question_id)
	Returns true if the question already exists in the database. More...

	_questionExistsInPool ($question_id)
	Returns true if the question already exists in the database and is assigned to a question pool. More...

	getPoints ()
	Returns the maximum available points for the question. More...

	setPoints ($a_points)
	Sets the maximum available points for the question. More...

	getSolutionMaxPass ($active_id)
	Returns the maximum pass a users question solution. More...

	calculateReachedPoints ($active_id, $pass=null, $authorizedSolution=true, $returndetails=false)
	Returns the points, a learner has reached answering the question. More...

	deductHintPointsFromReachedPoints (ilAssQuestionPreviewSession $previewSession, $reachedPoints)

	calculateReachedPointsFromPreviewSession (ilAssQuestionPreviewSession $previewSession)

	isPreviewSolutionCorrect (ilAssQuestionPreviewSession $previewSession)

	adjustReachedPointsByScoringOptions ($points, $active_id, $pass=null)
	Adjust the given reached points by checks for all special scoring options in the test container. More...

	isHTML ($a_text)
	Checks if a given string contains HTML or not. More...

	prepareTextareaOutput ($txt_output, $prepare_for_latex_output=false, $omitNl2BrWhenTextArea=false)
	Prepares a string for a text area output in tests. More...

	QTIMaterialToString ($a_material)
	Reads an QTI material tag an creates a text string. More...

	addQTIMaterial (&$a_xml_writer, $a_material, $close_material_tag=true, $add_mobs=true)
	Creates a QTI material tag from a plain text or xhtml text. More...

	buildHashedImageFilename ($plain_image_filename, $unique=false)

	getQuestion ()
	Gets the question string of the question object. More...

	setQuestion ($question="")
	Sets the question string of the question object. More...

	getQuestionType ()
	Returns the question type of the question. More...

	getQuestionTypeID ()
	Returns the question type of the question. More...

	cleanupMediaObjectUsage ()
	synchronises appearances of media objects in the question with media object usage table More...

&	getInstances ()
	Gets all instances of the question. More...

	getActiveUserData ($active_id)
	Returns the user id and the test id for a given active id. More...

	setExportDetailsXLS ($worksheet, $startrow, $active_id, $pass)
	Creates an Excel worksheet for the detailed cumulated results of this question. More...

	__get ($value)
	Object getter. More...

	__set ($key, $value)
	Object setter. More...

	getNrOfTries ()

	setNrOfTries ($a_nr_of_tries)

	setExportImagePath ($a_path)

	formatSAQuestion ($a_q)
	Format self assessment question. More...

	setPreventRteUsage ($a_val)
	Set prevent rte usage. More...

	getPreventRteUsage ()
	Get prevent rte usage. More...

	migrateContentForLearningModule (ilAssSelfAssessmentMigrator $migrator)

	setSelfAssessmentEditingMode ($a_selfassessmenteditingmode)
	Set Self-Assessment Editing Mode. More...

	getSelfAssessmentEditingMode ()
	Get Self-Assessment Editing Mode. More...

	setDefaultNrOfTries ($a_defaultnroftries)
	Set Default Nr of Tries. More...

	getDefaultNrOfTries ()
	Get Default Nr of Tries. More...

	syncSkillAssignments ($srcParentId, $srcQuestionId, $trgParentId, $trgQuestionId)

	isAnswered ($active_id, $pass=null)
	returns boolean wether the question is answered during test pass or not More...

	isAutosaveable ()

	getAdditionalContentEditingMode ()
	getter for additional content editing mode for this question More...

	setAdditionalContentEditingMode ($additinalContentEditingMode)
	setter for additional content editing mode for this question More...

	isAdditionalContentEditingModePageObject ()
	isser for additional "pageobject" content editing mode More...

	isValidAdditionalContentEditingMode ($additionalContentEditingMode)
	returns the fact wether the passed additional content mode is valid or not More...

	getValidAdditionalContentEditingModes ()
	getter for valid additional content editing modes More...

	addQuestionChangeListener (ilQuestionChangeListener $listener)

	getQuestionChangeListeners ()

	getHtmlUserSolutionPurifier ()

	getHtmlQuestionContentPurifier ()

	setLastChange ($lastChange)

	getLastChange ()

	removeIntermediateSolution ($active_id, $pass)

	removeCurrentSolution ($active_id, $pass, $authorized=true)

	saveCurrentSolution ($active_id, $pass, $value1, $value2, $authorized=true, $tstamp=null)

	updateCurrentSolution ($solutionId, $value1, $value2, $authorized=true)

	updateCurrentSolutionsAuthorization ($activeId, $pass, $authorized, $keepTime=false)

	setStep ($step)

	getStep ()

	toJSON ()

	duplicate ($for_test=true, $title="", $author="", $owner="", $testObjId=null)

	intermediateSolutionExists ($active_id, $pass)

	authorizedSolutionExists ($active_id, $pass)

	authorizedOrIntermediateSolutionExists ($active_id, $pass)

	removeExistingSolutions ($activeId, $pass)

	resetUsersAnswer ($activeId, $pass)

	removeResultRecord ($activeId, $pass)

	fetchValuePairsFromIndexedValues (array $indexedValues)

	fetchIndexedValuesFromValuePairs (array $valuePairs)

	areObligationsToBeConsidered ()

	setObligationsToBeConsidered ($obligationsToBeConsidered)

	updateTimestamp ()

	getTestPresentationConfig ()
	Get the test question configuration (initialised once) More...

Public Member Functions inherited from ilObjQuestionScoringAdjustable
	saveAdditionalQuestionDataToDb ()
	Saves a record to the question types additional data table. More...

Public Member Functions inherited from ilObjAnswerScoringAdjustable
	saveAnswerSpecificDataToDb ()
	Saves the answer specific records into a question types answer table. More...

Public Member Functions inherited from iQuestionCondition
	getUserQuestionResult ($active_id, $pass)
	Get the user solution for a question by active_id and the test pass. More...

Static Public Member Functions
static	isObligationPossible ($questionId)
	returns boolean wether it is possible to set this question type as obligatory or not considering the current question configuration More...

Static Public Member Functions inherited from assQuestion
static	setForcePassResultUpdateEnabled ($forcePassResultsUpdateEnabled)

static	isForcePassResultUpdateEnabled ()

static	isAllowedImageMimeType ($mimeType)

static	fetchMimeTypeIdentifier ($contentTypeString)

static	getAllowedFileExtensionsForMimeType ($mimeType)

static	isAllowedImageFileExtension ($mimeType, $fileExtension)

static	getAllowedImageMaterialFileExtensions ()

static	_getMaximumPoints ($question_id)
	Returns the maximum points, a learner can reach answering the question. More...

static	_getQuestionInfo ($question_id)
	Returns question information from the database. More...

static	_getSuggestedSolutionCount ($question_id)
	Returns the number of suggested solutions associated with a question. More...

static	_getSuggestedSolutionOutput ($question_id)
	Returns the output of the suggested solution. More...

static	_getReachedPoints ($active_id, $question_id, $pass=null)
	Returns the points, a learner has reached answering the question. More...

static	_updateTestResultCache ($active_id, ilAssQuestionProcessLocker $processLocker=null)
	Move this to a proper place. More...

static	logAction ($logtext="", $active_id="", $question_id="")
	Logs an action into the Test&Assessment log. More...

static	getQuestionTypeFromDb ($question_id)
	get question type for question id More...

static	_getTotalRightAnswers ($a_q_id)
	get number of answers for question id (static) note: do not use $this inside this method More...

static	_getTitle ($a_q_id)
	Returns the title of a question. More...

static	_getQuestionText ($a_q_id)
	Returns question text. More...

static	isFileAvailable ($file)

static	_getQuestionType ($question_id)
	Returns the question type of a question with a given id. More...

static	_getQuestionTitle ($question_id)
	Returns the question title of a question with a given id. More...

static	saveOriginalId ($questionId, $originalId)

static	resetOriginalId ($questionId)

static	_getInternalLinkHref ($target="")

static	_getOriginalId ($question_id)
	Returns the original id of a question. More...

static	originalQuestionExists ($questionId)

static	_instanciateQuestion ($question_id)
	Creates an instance of a question with a given question id. More...

static	_instantiateQuestion ($question_id)

static	_getSolutionMaxPass ($question_id, $active_id)
	Returns the maximum pass a users question solution. More...

static	_isWriteable ($question_id, $user_id)
	Returns true if the question is writeable by a certain user. More...

static	_isUsedInRandomTest ($question_id="")
	Checks whether the question is used in a random test or not. More...

static	_isWorkedThrough ($active_id, $question_id, $pass=null)
	Returns true if the question was worked through in the given pass Worked through means that the user entered at least one value. More...

static	_areAnswered ($a_user_id, $a_question_ids)
	Checks if an array of question ids is answered by an user or not. More...

static	_setReachedPoints ($active_id, $question_id, $points, $maxpoints, $pass, $manualscoring, $obligationsEnabled)
	Sets the points, a learner has reached answering the question Additionally objective results are updated. More...

static	_needsManualScoring ($question_id)

static	_includeClass ($question_type, $gui=0)
	Include the php class file for a given question type. More...

static	getGuiClassNameByQuestionType ($questionType)

static	getObjectClassNameByQuestionType ($questionType)

static	getFeedbackClassNameByQuestionType ($questionType)

static	isCoreQuestionType ($questionType)

static	includeCoreClass ($questionType, $withGuiClass)

static	includePluginClass ($questionType, $withGuiClass)

static	_getQuestionTypeName ($type_tag)
	Return the translation for a given question type tag. More...

static &	_instanciateQuestionGUI ($question_id)
	Creates an instance of a question gui with a given question id. More...

static	instantiateQuestionGUI ($a_question_id)
	Creates an instance of a question gui with a given question id. More...

static	_questionExistsInTest ($question_id, $test_id)

static	lookupParentObjId ($questionId)
	ilDBInterface $ilDB More...

static	lookupOriginalParentObjId ($originalQuestionId)
	returns the parent object id for given original question id (should be a qpl id, but theoretically it can be a tst id, too) More...

static	isObligationPossible ($questionId)
	returns boolean wether it is possible to set this question type as obligatory or not considering the current question configuration More...

static	implodeKeyValues ($keyValues)

static	explodeKeyValues ($keyValues)

static	setResultGateway ($resultGateway)

static	getResultGateway ()

static	sumTimesInISO8601FormatH_i_s_Extended ($time1, $time2)

static	convertISO8601FormatH_i_s_ExtendedToSeconds ($time)

static	missingResultRecordExists ($activeId, $pass, $questionIds)

static	getQuestionsMissingResultRecord ($activeId, $pass, $questionIds)

static	lookupResultRecordExist ($activeId, $questionId, $pass)

Data Fields
	$answers

	$output_type

Data Fields inherited from assQuestion
const	IMG_MIME_TYPE_JPG = 'image/jpeg'

const	IMG_MIME_TYPE_PNG = 'image/png'

const	IMG_MIME_TYPE_GIF = 'image/gif'

const	ADDITIONAL_CONTENT_EDITING_MODE_DEFAULT = 'default'
	constant for additional content editing mode "default" More...

const	ADDITIONAL_CONTENT_EDITING_MODE_PAGE_OBJECT = 'pageobject'
	constant for additional content editing mode "pageobject" More...

	$feedbackOBJ = null

	$prevent_rte_usage = false

	$selfassessmenteditingmode = false

	$defaultnroftries = 0

	$questionActionCmd = 'handleQuestionAction'

const	KEY_VALUES_IMPLOSION_SEPARATOR = ':'

Data Fields inherited from iQuestionCondition
const	StringResultExpression = '~TEXT~'

const	PercentageResultExpression = '%n%'

const	NumericResultExpression = '#n#'

const	MatchingResultExpression = ';n:m;'

const	OrderingResultExpression = '$n,m,o,p$'

const	NumberOfResultExpression = '+n+'

const	ExclusiveResultExpression = 'n,m,o,p'

const	EmptyAnswerExpression = "?"

Protected Member Functions
	rebuildThumbnails ()

	generateThumbForFile ($path, $file)

	savePreviewData (ilAssQuestionPreviewSession $previewSession)

	reworkWorkingData ($active_id, $pass, $obligationsAnswered, $authorized)
	{} More...

	syncImages ()
	Sync images of a MC question on synchronisation with the original question. More...

	lmMigrateQuestionTypeSpecificContent (ilAssSelfAssessmentMigrator $migrator)

	afterSyncWithOriginal ($origQuestionId, $dupQuestionId, $origParentObjId, $dupParentObjId)
	{} More...

Protected Member Functions inherited from assQuestion
	getQuestionAction ()

	isNonEmptyItemListPostSubmission ($postSubmissionFieldname)

	ensureCurrentTestPass ($active_id, $pass)

	lookupCurrentTestPass ($active_id, $pass)

	lookupTestId ($active_id)

	log ($active_id, $langVar)

	reworkWorkingData ($active_id, $pass, $obligationsAnswered, $authorized)
	Reworks the allready saved working data if neccessary. More...

	savePreviewData (ilAssQuestionPreviewSession $previewSession)

	deletePageOfQuestion ($question_id)
	Deletes the page object of a question with a given ID. More...

	onDuplicate ($originalParentId, $originalQuestionId, $duplicateParentId, $duplicateQuestionId)
	Will be called when a question is duplicated (inside a question pool or for insertion in a test) More...

	beforeSyncWithOriginal ($origQuestionId, $dupQuestionId, $origParentObjId, $dupParentObjId)

	afterSyncWithOriginal ($origQuestionId, $dupQuestionId, $origParentObjId, $dupParentObjId)

	onCopy ($sourceParentId, $sourceQuestionId, $targetParentId, $targetQuestionId)
	Will be called when a question is copied (into another question pool) More...

	duplicateSuggestedSolutionFiles ($parent_id, $question_id)
	Duplicates the files of a suggested solution if the question is duplicated. More...

	syncSuggestedSolutionFiles ($original_id)
	Syncs the files of a suggested solution if the question is synced. More...

	copySuggestedSolutionFiles ($source_questionpool_id, $source_question_id)

	ensureNonNegativePoints ($points)

	getRTETextWithMediaObjects ()
	Collects all text in the question which could contain media objects which were created with the Rich Text Editor. More...

	getSelfAssessmentFormatter ()

	lmMigrateQuestionTypeGenericContent (ilAssSelfAssessmentMigrator $migrator)

	lmMigrateQuestionTypeSpecificContent (ilAssSelfAssessmentMigrator $migrator)

	duplicateQuestionHints ($originalQuestionId, $duplicateQuestionId)

	duplicateSkillAssignments ($srcParentId, $srcQuestionId, $trgParentId, $trgQuestionId)

	buildQuestionDataQuery ()

	getCurrentSolutionResultSet ($active_id, $pass, $authorized=true)
	Get a restulset for the current user solution for a this question by active_id and pass. More...

	removeSolutionRecordById ($solutionId)

	getSolutionRecordById ($solutionId)

	deleteDummySolutionRecord ($activeId, $passIndex)

	deleteSolutionRecordByValues ($activeId, $passIndex, $authorized, $matchValues)

	duplicateIntermediateSolutionAuthorized ($activeId, $passIndex)

	forceExistingIntermediateSolution ($activeId, $passIndex, $considerDummyRecordCreation)

	buildTestPresentationConfig ()
	build basic test question configuration instance More...

Protected Attributes
	$thumb_size

	$feedback_setting

Protected Attributes inherited from assQuestion
	$id

	$title

	$comment

	$owner

	$author

	$question

	$points

	$est_working_time

	$shuffle

	$test_id

	$obj_id

	$ilias

	$tpl

	$lng

	$db

	$outputType = OUTPUT_JAVASCRIPT

	$suggested_solutions

	$original_id

	$page

	$external_id = ''

	$questionChangeListeners = array()

	$processLocker

	$step = null

	$lastChange

	$shuffler

	$testQuestionConfig

Additional Inherited Members
Static Protected Member Functions inherited from assQuestion
static	getNumExistingSolutionRecords ($activeId, $pass, $questionId)
	returns the number of existing solution records for the given test active / pass and given question id More...

static	getKeyValuesImplosionSeparator ()

Static Protected Attributes inherited from assQuestion
static	$allowedFileExtensionsByMimeType

static	$allowedCharsetsByMimeType

static	$allowedImageMaterialFileExtensionsByMimeType

static	$forcePassResultsUpdateEnabled = false

static	$imageSourceFixReplaceMap

Detailed Description

Class for single choice questions.

assSingleChoice is a class for single choice questions.

Author: Helmut Schottmüller helmu.nosp@m.t.sc.nosp@m.hottm.nosp@m.uell.nosp@m.er@ma.nosp@m.c.co.nosp@m.m; Björn Heyser bheys.nosp@m.er@d.nosp@m.ataba.nosp@m.y.de; Maximilian Becker mbeck.nosp@m.er@d.nosp@m.ataba.nosp@m.y.de

Version: $Id$

Definition at line 25 of file class.assSingleChoice.php.

Constructor & Destructor Documentation

◆ __construct()

assSingleChoice::__construct	(	$title = `""`,
		$comment = `""`,
		$author = `""`,
		$owner = `-1`,
		$question = `""`,
		$output_type = `OUTPUT_ORDER`
	)

assSingleChoice constructor

The constructor takes possible arguments an creates an instance of the assSingleChoice object.

Parameters

string	$title	A title string to describe the question
string	$comment	A comment string to describe the question
string	$author	A string containing the name of the questions author
integer	$owner	A numerical ID to identify the owner/creator
string	$question	The question string of the single choice question
int \| string	$output_type	The output order of the single choice answers

See also: assQuestion:assQuestion()

Definition at line 75 of file class.assSingleChoice.php.

References assQuestion\$author, assQuestion\$comment, $output_type, assQuestion\$owner, assQuestion\$question, assQuestion\$title, and array.

       {
         parent::__construct($title, $comment, $author, $owner, $question);
         $this->thumb_size = 150;
         $this->output_type = $output_type;
         $this->answers = array();
         $this->shuffle = 1;
         $this->feedback_setting = 2;
     }

Member Function Documentation

◆ addAnswer()

assSingleChoice::addAnswer	(	$answertext = `""`,
		$points = `0.0`,
		$order = `0`,
		$answerimage = `""`
	)

Adds a possible answer for a single choice question.

A ASS_AnswerBinaryStateImage object will be created and assigned to the array $this->answers.

Parameters

string	$answertext	The answer text
double	$points	The points for selecting the answer (even negative points can be used)
boolean	$state	Defines the answer as correct (TRUE) or incorrect (FALSE)
integer	$order	A possible display order of the answer
double	$points	The points for not selecting the answer (even negative points can be used) public

See also: $answers; ASS_AnswerBinaryStateImage

Definition at line 413 of file class.assSingleChoice.php.

References $changed, $i, assQuestion\$points, and array.

       {
         include_once "./Modules/TestQuestionPool/classes/class.assAnswerBinaryStateImage.php";
         if (array_key_exists($order, $this->answers)) {
             // insert answer
             $answer = new ASS_AnswerBinaryStateImage($answertext, $points, $order, 1, $answerimage);
             $newchoices = array();
             for ($i = 0; $i < $order; $i++) {
                 array_push($newchoices, $this->answers[$i]);
             }
             array_push($newchoices, $answer);
             for ($i = $order; $i < count($this->answers); $i++) {
                 $changed = $this->answers[$i];
                 $changed->setOrder($i+1);
                 array_push($newchoices, $changed);
             }
             $this->answers = $newchoices;
         } else {
             // add answer
             $answer = new ASS_AnswerBinaryStateImage($answertext, $points, count($this->answers), 1, $answerimage);
             array_push($this->answers, $answer);
         }
     }

◆ afterSyncWithOriginal()

assSingleChoice::afterSyncWithOriginal	(	$origQuestionId,
		$dupQuestionId,
		$origParentObjId,
		$dupParentObjId
	)

protected

{}

Definition at line 1236 of file class.assSingleChoice.php.

References assQuestion\buildImagePath(), ilUtil\delDir(), ilUtil\makeDirParents(), and ilUtil\rCopy().

     {
         parent::afterSyncWithOriginal($origQuestionId, $dupQuestionId, $origParentObjId, $dupParentObjId);
 
         $origImagePath = $this->buildImagePath($origQuestionId, $origParentObjId);
         $dupImagePath  = $this->buildImagePath($dupQuestionId, $dupParentObjId);
 
         ilUtil::delDir($origImagePath);
         if (is_dir($dupImagePath)) {
             ilUtil::makeDirParents($origImagePath);
             ilUtil::rCopy($dupImagePath, $origImagePath);
         }
     }

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◆ calculateReachedPoints()

assSingleChoice::calculateReachedPoints	(	$active_id,
		$pass = `null`,
		$authorizedSolution = `true`,
		$returndetails = `false`
	)

Returns the points, a learner has reached answering the question.

The points are calculated from the given answers.

public

Parameters

integer	$active_id
integer	$pass
boolean	$returndetails	(deprecated !!)

Returns: integer/array $points/$details (array $details is deprecated !!)

Definition at line 547 of file class.assSingleChoice.php.

References $data, $ilDB, $key, $pass, assQuestion\$points, $result, array, assQuestion\getCurrentSolutionResultSet(), and assQuestion\getSolutionMaxPass().

Referenced by getExpressionTypes().

     {
         if ($returndetails) {
             throw new ilTestException('return details not implemented for ' . __METHOD__);
         }
         
         global $ilDB;
         
         $found_values = array();
         if (is_null($pass)) {
             $pass = $this->getSolutionMaxPass($active_id);
         }
         $result = $this->getCurrentSolutionResultSet($active_id, $pass, $authorizedSolution);
         while ($data = $ilDB->fetchAssoc($result)) {
             if (strcmp($data["value1"], "") != 0) {
                 array_push($found_values, $data["value1"]);
             }
         }
         $points = 0;
         foreach ($this->answers as $key => $answer) {
             if (count($found_values) > 0) {
                 if (in_array($key, $found_values)) {
                     $points += $answer->getPoints();
                 }
             }
         }
 
         return $points;
     }

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◆ calculateReachedPointsFromPreviewSession()

assSingleChoice::calculateReachedPointsFromPreviewSession ( ilAssQuestionPreviewSession $previewSession )

Definition at line 577 of file class.assSingleChoice.php.

References $key, assQuestion\$points, assQuestion\deductHintPointsFromReachedPoints(), assQuestion\ensureNonNegativePoints(), and ilAssQuestionPreviewSession\getParticipantsSolution().

     {
         $participantSolution = $previewSession->getParticipantsSolution();
         
         $points = 0;
         
         foreach ($this->answers as $key => $answer) {
             if (is_numeric($participantSolution) && $key == $participantSolution) {
                 $points = $answer->getPoints();
             }
         }
         
         $reachedPoints = $this->deductHintPointsFromReachedPoints($previewSession, $points);
         
         return $this->ensureNonNegativePoints($reachedPoints);
     }

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◆ copyObject()

assSingleChoice::copyObject	(	$target_questionpool_id,
		$title = `""`
	)

Copies an assSingleChoice object.

public

Definition at line 312 of file class.assSingleChoice.php.

References assQuestion\$original_id, assQuestion\$title, assQuestion\_getOriginalId(), and assQuestion\getObjId().

     {
         if ($this->id <= 0) {
             // The question has not been saved. It cannot be duplicated
             return;
         }
         // duplicate the question in database
         $clone = $this;
         include_once("./Modules/TestQuestionPool/classes/class.assQuestion.php");
         $original_id = assQuestion::_getOriginalId($this->id);
         $clone->id = -1;
         $source_questionpool_id = $this->getObjId();
         $clone->setObjId($target_questionpool_id);
         if ($title) {
             $clone->setTitle($title);
         }
         $clone->saveToDb();
         // copy question page content
         $clone->copyPageOfQuestion($original_id);
         // copy XHTML media objects
         $clone->copyXHTMLMediaObjectsOfQuestion($original_id);
         // duplicate the image
         $clone->copyImages($original_id, $source_questionpool_id);
 
         $clone->onCopy($source_questionpool_id, $original_id, $clone->getObjId(), $clone->getId());
 
         return $clone->id;
     }

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◆ createNewOriginalFromThisDuplicate()

assSingleChoice::createNewOriginalFromThisDuplicate	(	$targetParentId,
		$targetQuestionTitle = `""`
	)

Definition at line 341 of file class.assSingleChoice.php.

References assQuestion\$id, and assQuestion\getObjId().

     {
         if ($this->id <= 0) {
             // The question has not been saved. It cannot be duplicated
             return;
         }
 
         include_once("./Modules/TestQuestionPool/classes/class.assQuestion.php");
 
         $sourceQuestionId = $this->id;
         $sourceParentId = $this->getObjId();
 
         // duplicate the question in database
         $clone = $this;
         $clone->id = -1;
 
         $clone->setObjId($targetParentId);
 
         if ($targetQuestionTitle) {
             $clone->setTitle($targetQuestionTitle);
         }
 
         $clone->saveToDb();
         // copy question page content
         $clone->copyPageOfQuestion($sourceQuestionId);
         // copy XHTML media objects
         $clone->copyXHTMLMediaObjectsOfQuestion($sourceQuestionId);
         // duplicate the image
         $clone->copyImages($sourceQuestionId, $sourceParentId);
 
         $clone->onCopy($sourceParentId, $sourceQuestionId, $clone->getObjId(), $clone->getId());
 
         return $clone->id;
     }

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◆ createRandomSolution()

assSingleChoice::createRandomSolution	(	$active_id,
		$pass
	)

Definition at line 1050 of file class.assSingleChoice.php.

References $_POST, $pass, assQuestion\calculateResultsFromSolution(), and saveWorkingData().

     {
         $value = rand(0, count($this->answers)-1);
         $_POST["multiple_choice_result"] = (strlen($value)) ? (string) $value : '0';
         $this->saveWorkingData($active_id, $pass);
         $this->calculateResultsFromSolution($active_id, $pass);
     }

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◆ deleteAnswer()

assSingleChoice::deleteAnswer ( $index = 0 )

Deletes an answer with a given index.

The index of the first answer is 0, the index of the second answer is 1 and so on.

Parameters

integer $index A nonnegative index of the n-th answer public

See also: $answers

Definition at line 485 of file class.assSingleChoice.php.

References $i, $index, and deleteImage().

     {
         if ($index < 0) {
             return;
         }
         if (count($this->answers) < 1) {
             return;
         }
         if ($index >= count($this->answers)) {
             return;
         }
         $answer = $this->answers[$index];
         if (strlen($answer->getImage())) {
             $this->deleteImage($answer->getImage());
         }
         unset($this->answers[$index]);
         $this->answers = array_values($this->answers);
         for ($i = 0; $i < count($this->answers); $i++) {
             if ($this->answers[$i]->getOrder() > $index) {
                 $this->answers[$i]->setOrder($i);
             }
         }
     }

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◆ deleteImage()

assSingleChoice::deleteImage ( $image_filename )

Deletes an image file.

Parameters

string $image_filename Name of the image file to delete private

Definition at line 802 of file class.assSingleChoice.php.

References assQuestion\getImagePath(), and getThumbPrefix().

Referenced by deleteAnswer(), and removeAnswerImage().

     {
         $imagepath = $this->getImagePath();
         @unlink($imagepath . $image_filename);
         $thumbpath = $imagepath . $this->getThumbPrefix() . $image_filename;
         @unlink($thumbpath);
     }

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◆ duplicate()

assSingleChoice::duplicate	(	$for_test = `true`,
		$title = `""`,
		$author = `""`,
		$owner = `""`,
		$testObjId = `null`
	)

Duplicates an assSingleChoiceQuestion.

public

Definition at line 259 of file class.assSingleChoice.php.

References assQuestion\$author, assQuestion\$original_id, assQuestion\$owner, assQuestion\$title, assQuestion\_getOriginalId(), assQuestion\getId(), and assQuestion\getObjId().

     {
         if ($this->id <= 0) {
             // The question has not been saved. It cannot be duplicated
             return;
         }
         // duplicate the question in database
         $this_id = $this->getId();
         $thisObjId = $this->getObjId();
         
         $clone = $this;
         include_once("./Modules/TestQuestionPool/classes/class.assQuestion.php");
         $original_id = assQuestion::_getOriginalId($this->id);
         $clone->id = -1;
         
         if ((int) $testObjId > 0) {
             $clone->setObjId($testObjId);
         }
         
         if ($title) {
             $clone->setTitle($title);
         }
 
         if ($author) {
             $clone->setAuthor($author);
         }
         if ($owner) {
             $clone->setOwner($owner);
         }
         if ($for_test) {
             $clone->saveToDb($original_id);
         } else {
             $clone->saveToDb();
         }
 
         // copy question page content
         $clone->copyPageOfQuestion($this_id);
         
         // copy XHTML media objects
         $clone->copyXHTMLMediaObjectsOfQuestion($this_id);
         // duplicate the images
         $clone->duplicateImages($this_id, $thisObjId);
         
         $clone->onDuplicate($thisObjId, $this_id, $clone->getObjId(), $clone->getId());
 
         return $clone->id;
     }

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◆ duplicateImages()

assSingleChoice::duplicateImages	(	$question_id,
		$objectId = `null`
	)

Definition at line 810 of file class.assSingleChoice.php.

References $filename, $ilLog, assQuestion\getImagePath(), getThumbPrefix(), and ilUtil\makeDirParents().

     {
         global $ilLog;
         $imagepath = $this->getImagePath();
         $imagepath_original = str_replace("/$this->id/images", "/$question_id/images", $imagepath);
         
         if ((int) $objectId > 0) {
             $imagepath_original = str_replace("/$this->obj_id/", "/$objectId/", $imagepath_original);
         }
         
         foreach ($this->answers as $answer) {
             $filename = $answer->getImage();
             if (strlen($filename)) {
                 if (!file_exists($imagepath)) {
                     ilUtil::makeDirParents($imagepath);
                 }
                 if (!@copy($imagepath_original . $filename, $imagepath . $filename)) {
                     $ilLog->write("image could not be duplicated!!!!", $ilLog->ERROR);
                     $ilLog->write("object: " . print_r($this, true), $ilLog->ERROR);
                 }
                 if (@file_exists($imagepath_original . $this->getThumbPrefix() . $filename)) {
                     if (!@copy($imagepath_original . $this->getThumbPrefix() . $filename, $imagepath . $this->getThumbPrefix() . $filename)) {
                         $ilLog->write("image thumbnail could not be duplicated!!!!", $ilLog->ERROR);
                         $ilLog->write("object: " . print_r($this, true), $ilLog->ERROR);
                     }
                 }
             }
         }
     }

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◆ flushAnswers()

assSingleChoice::flushAnswers ( )

Deletes all answers.

public

See also: $answers

Definition at line 515 of file class.assSingleChoice.php.

References array.

     {
         $this->answers = array();
     }

◆ generateThumbForFile()

assSingleChoice::generateThumbForFile	(	$path,
		$file
	)

protected

Definition at line 166 of file class.assSingleChoice.php.

References $file, $filename, $path, ilUtil\convertImage(), getThumbPrefix(), and getThumbSize().

Referenced by rebuildThumbnails(), and setImageFile().

     {
         $filename = $path . $file;
         if (@file_exists($filename)) {
             $thumbpath = $path . $this->getThumbPrefix() . $file;
             $path_info = @pathinfo($filename);
             $ext = "";
             switch (strtoupper($path_info['extension'])) {
                 case 'PNG':
                     $ext = 'PNG';
                     break;
                 case 'GIF':
                     $ext = 'GIF';
                     break;
                 default:
                     $ext = 'JPEG';
                     break;
             }
             ilUtil::convertImage($filename, $thumbpath, $ext, $this->getThumbSize());
         }
     }

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◆ getAdditionalTableName()

assSingleChoice::getAdditionalTableName ( )

Returns the name of the additional question data table in the database.

Returns: string The additional table name public

Definition at line 743 of file class.assSingleChoice.php.

Referenced by isComplete(), loadFromDb(), and savePreviewData().

     {
         return "qpl_qst_sc";
     }

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◆ getAnswer()

assSingleChoice::getAnswer ( $index = 0 )

Returns an answer with a given index.

The index of the first answer is 0, the index of the second answer is 1 and so on.

Parameters

integer $index A nonnegative index of the n-th answer

Returns: object ASS_AnswerBinaryStateImage-Object containing the answer public

See also: $answers

Definition at line 462 of file class.assSingleChoice.php.

References $index.

Referenced by getAvailableAnswerOptions().

     {
         if ($index < 0) {
             return null;
         }
         if (count($this->answers) < 1) {
             return null;
         }
         if ($index >= count($this->answers)) {
             return null;
         }
 
         return $this->answers[$index];
     }

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◆ getAnswerCount()

assSingleChoice::getAnswerCount ( )

Returns the number of answers.

Returns: integer The number of answers of the multiple choice question public

See also: $answers

Definition at line 448 of file class.assSingleChoice.php.

     {
         return count($this->answers);
     }

◆ getAnswers()

& assSingleChoice::getAnswers ( )

Returns a reference to the answers array.

Definition at line 939 of file class.assSingleChoice.php.

References $answers.

Referenced by getAvailableAnswerOptions(), lmMigrateQuestionTypeSpecificContent(), rebuildThumbnails(), setExportDetailsXLS(), and toJSON().

     {
         return $this->answers;
     }

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◆ getAnswerTableName()

assSingleChoice::getAnswerTableName ( )

Returns the name of the answer table in the database.

Returns: string The answer table name public

Definition at line 754 of file class.assSingleChoice.php.

     {
         return "qpl_a_sc";
     }

◆ getAvailableAnswerOptions()

assSingleChoice::getAvailableAnswerOptions ( $index = null )

If index is null, the function returns an array with all anwser options Else it returns the specific answer option.

Parameters

null | int $index

Returns: array|ASS_AnswerSimple

Implements iQuestionCondition.

Definition at line 1224 of file class.assSingleChoice.php.

References $index, getAnswer(), and getAnswers().

     {
         if ($index !== null) {
             return $this->getAnswer($index);
         } else {
             return $this->getAnswers();
         }
     }

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◆ getExpressionTypes()

assSingleChoice::getExpressionTypes ( )

Get all available expression types for a specific question.

Returns: array

Implements iQuestionCondition.

Definition at line 1162 of file class.assSingleChoice.php.

References $data, $ilDB, $pass, assQuestion\$points, $result, $row, array, calculateReachedPoints(), iQuestionCondition\EmptyAnswerExpression, assQuestion\getId(), getMaximumPoints(), iQuestionCondition\getUserQuestionResult(), iQuestionCondition\NumberOfResultExpression, and iQuestionCondition\PercentageResultExpression.

     {
         return array(
             iQuestionCondition::PercentageResultExpression,
             iQuestionCondition::NumberOfResultExpression,
             iQuestionCondition::EmptyAnswerExpression,
         );
     }

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◆ getMaximumPoints()

assSingleChoice::getMaximumPoints ( )

Returns the maximum points, a learner can reach answering the question.

public

See also: $points

Definition at line 526 of file class.assSingleChoice.php.

References $key, and assQuestion\$points.

Referenced by getExpressionTypes(), and isComplete().

     {
         $points = 0;
         foreach ($this->answers as $key => $value) {
             if ($value->getPoints() > $points) {
                 $points = $value->getPoints();
             }
         }
         return $points;
     }

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◆ getMultilineAnswerSetting()

assSingleChoice::getMultilineAnswerSetting ( )

Definition at line 1058 of file class.assSingleChoice.php.

References $ilUser.

     {
         global $ilUser;
 
         $multilineAnswerSetting = $ilUser->getPref("tst_multiline_answers");
         if ($multilineAnswerSetting != 1) {
             $multilineAnswerSetting = 0;
         }
         return $multilineAnswerSetting;
     }

◆ getOperators()

assSingleChoice::getOperators ( $expression )

Get all available operations for a specific question.

Parameters

string $expression

Implements iQuestionCondition.

Definition at line 1152 of file class.assSingleChoice.php.

References ilOperatorsExpressionMapping\getOperatorsByExpression().

     {
         require_once "./Modules/TestQuestionPool/classes/class.ilOperatorsExpressionMapping.php";
         return ilOperatorsExpressionMapping::getOperatorsByExpression($expression);
     }

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◆ getOutputType()

assSingleChoice::getOutputType ( )

Gets the single choice output type which is either OUTPUT_ORDER (=0) or OUTPUT_RANDOM (=1).

Returns: integer The output type of the assSingleChoice object public

See also: $output_type

Definition at line 383 of file class.assSingleChoice.php.

References $output_type.

     {
         return $this->output_type;
     }

◆ getQuestionType()

assSingleChoice::getQuestionType ( )

Returns the question type of the question.

Returns: integer The question type of the question public

Definition at line 732 of file class.assSingleChoice.php.

Referenced by toJSON().

     {
         return "assSingleChoice";
     }

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◆ getRTETextWithMediaObjects()

assSingleChoice::getRTETextWithMediaObjects ( )

Collects all text in the question which could contain media objects which were created with the Rich Text Editor.

Definition at line 925 of file class.assSingleChoice.php.

References $index, $text, and assQuestion\getId().

     {
         $text = parent::getRTETextWithMediaObjects();
         foreach ($this->answers as $index => $answer) {
             $text .= $this->feedbackOBJ->getSpecificAnswerFeedbackContent($this->getId(), $index);
             $answer_obj = $this->answers[$index];
             $text .= $answer_obj->getAnswertext();
         }
         return $text;
     }

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◆ getSpecificFeedbackAllCorrectOptionLabel()

assSingleChoice::getSpecificFeedbackAllCorrectOptionLabel ( )

Implements ilAssSpecificFeedbackOptionLabelProvider.

Definition at line 1107 of file class.assSingleChoice.php.

     {
         return 'feedback_correct_sc_mc';
     }

◆ getSpecificFeedbackSetting()

assSingleChoice::getSpecificFeedbackSetting ( )

Gets the current feedback settings in effect for the question.

Values are: 1 - Feedback is shown for all answer options. 2 - Feedback is shown for all checked/selected options. 3 - Feedback is shown for all correct options.

Returns: integer

Definition at line 1098 of file class.assSingleChoice.php.

References $feedback_setting.

Referenced by savePreviewData().

     {
         if ($this->feedback_setting) {
             return $this->feedback_setting;
         } else {
             return 1;
         }
     }

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◆ getThumbPrefix()

assSingleChoice::getThumbPrefix ( )

Definition at line 161 of file class.assSingleChoice.php.

Referenced by deleteImage(), duplicateImages(), generateThumbForFile(), and syncImages().

     {
         return "thumb.";
     }

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◆ getThumbSize()

assSingleChoice::getThumbSize ( )

Definition at line 972 of file class.assSingleChoice.php.

References $thumb_size.

Referenced by generateThumbForFile(), isComplete(), rebuildThumbnails(), savePreviewData(), setImageFile(), and toJSON().

     {
         return $this->thumb_size;
     }

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◆ isAnswered()

assSingleChoice::isAnswered	(	$active_id,
		$pass = `null`
	)

returns boolean wether the question is answered during test pass or not

(overwrites method in class assQuestion)

Parameters

integer	$active_id
integer	$pass

Returns: boolean $answered

Definition at line 1122 of file class.assSingleChoice.php.

References $pass, assQuestion\getId(), and assQuestion\getNumExistingSolutionRecords().

     {
         $numExistingSolutionRecords = assQuestion::getNumExistingSolutionRecords($active_id, $pass, $this->getId());
 
         return $numExistingSolutionRecords > 0;
     }

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◆ isComplete()

assSingleChoice::isComplete ( )

Returns true, if a single choice question is complete for use.

Returns: boolean True, if the single choice question is complete for use, otherwise false public

Definition at line 97 of file class.assSingleChoice.php.

References $data, $ilDB, assQuestion\$original_id, $result, array, getAdditionalTableName(), assQuestion\getId(), getMaximumPoints(), getThumbSize(), ilObjQuestionScoringAdjustable\saveAdditionalQuestionDataToDb(), ilObjAnswerScoringAdjustable\saveAnswerSpecificDataToDb(), assQuestion\saveQuestionDataToDb(), and assQuestion\saveToDb().

     {
         if (strlen($this->title) and ($this->author) and ($this->question) and (count($this->answers)) and ($this->getMaximumPoints() > 0)) {
             foreach ($this->answers as $answer) {
                 if ((strlen($answer->getAnswertext()) == 0) && (strlen($answer->getImage()) == 0)) {
                     return false;
                 }
             }
             return true;
         } else {
             return false;
         }
     }

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◆ isObligationPossible()

static assSingleChoice::isObligationPossible ( $questionId )

static

returns boolean wether it is possible to set this question type as obligatory or not considering the current question configuration

(overwrites method in class assQuestion)

Parameters

integer $questionId

Returns: boolean $obligationPossible

Definition at line 1139 of file class.assSingleChoice.php.

     {
         return true;
     }

◆ lmMigrateQuestionTypeSpecificContent()

assSingleChoice::lmMigrateQuestionTypeSpecificContent ( ilAssSelfAssessmentMigrator $migrator )

protected

Parameters

ilAssSelfAssessmentMigrator $migrator

Definition at line 985 of file class.assSingleChoice.php.

References getAnswers(), and ilAssSelfAssessmentMigrator\migrateToLmContent().

     {
         foreach ($this->getAnswers() as $answer) {
             /* @var ASS_AnswerBinaryStateImage $answer */
             $answer->setAnswertext($migrator->migrateToLmContent($answer->getAnswertext()));
         }
     }

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◆ loadFromDb()

assSingleChoice::loadFromDb ( $question_id )

Loads a assSingleChoice object from a database.

Parameters

object	$db	A pear DB object
integer	$question_id	A unique key which defines the multiple choice test in the database public

Definition at line 195 of file class.assSingleChoice.php.

References $data, $ilDB, $result, assQuestion\$shuffle, ilRTE\_replaceMediaObjectImageSrc(), array, getAdditionalTableName(), assQuestion\getImagePath(), assQuestion\setAdditionalContentEditingMode(), assQuestion\setAuthor(), assQuestion\setComment(), assQuestion\setEstimatedWorkingTime(), assQuestion\setId(), assQuestion\setNrOfTries(), assQuestion\setObjId(), assQuestion\setOriginalId(), assQuestion\setOwner(), assQuestion\setPoints(), assQuestion\setQuestion(), assQuestion\setShuffle(), setThumbSize(), and assQuestion\setTitle().

     {
         global $ilDB;
 
         $hasimages = 0;
 
         $result = $ilDB->queryF(
             "SELECT qpl_questions.*, " . $this->getAdditionalTableName() . ".* FROM qpl_questions LEFT JOIN " . $this->getAdditionalTableName() . " ON " . $this->getAdditionalTableName() . ".question_fi = qpl_questions.question_id WHERE qpl_questions.question_id = %s",
             array("integer"),
             array($question_id)
         );
         if ($result->numRows() == 1) {
             $data = $ilDB->fetchAssoc($result);
             $this->setId($question_id);
             $this->setObjId($data["obj_fi"]);
             $this->setTitle($data["title"]);
             $this->setNrOfTries($data['nr_of_tries']);
             $this->setComment($data["description"]);
             $this->setOriginalId($data["original_id"]);
             $this->setAuthor($data["author"]);
             $this->setPoints($data["points"]);
             $this->setOwner($data["owner"]);
             include_once("./Services/RTE/classes/class.ilRTE.php");
             $this->setQuestion(ilRTE::_replaceMediaObjectImageSrc($data["question_text"], 1));
             $shuffle = (is_null($data['shuffle'])) ? true : $data['shuffle'];
             $this->setShuffle($shuffle);
             $this->setEstimatedWorkingTime(substr($data["working_time"], 0, 2), substr($data["working_time"], 3, 2), substr($data["working_time"], 6, 2));
             $this->setThumbSize($data['thumb_size']);
             $this->isSingleline = ($data['allow_images']) ? false : true;
             $this->lastChange = $data['tstamp'];
             $this->feedback_setting = $data['feedback_setting'];
 
             try {
                 $this->setAdditionalContentEditingMode($data['add_cont_edit_mode']);
             } catch (ilTestQuestionPoolException $e) {
             }
         }
 
         $result = $ilDB->queryF(
             "SELECT * FROM qpl_a_sc WHERE question_fi = %s ORDER BY aorder ASC",
             array('integer'),
             array($question_id)
         );
         include_once "./Modules/TestQuestionPool/classes/class.assAnswerBinaryStateImage.php";
         if ($result->numRows() > 0) {
             while ($data = $ilDB->fetchAssoc($result)) {
                 $imagefilename = $this->getImagePath() . $data["imagefile"];
                 if (!@file_exists($imagefilename)) {
                     $data["imagefile"] = "";
                 }
                 include_once("./Services/RTE/classes/class.ilRTE.php");
                 $data["answertext"] = ilRTE::_replaceMediaObjectImageSrc($data["answertext"], 1);
                 array_push($this->answers, new ASS_AnswerBinaryStateImage($data["answertext"], $data["points"], $data["aorder"], 1, $data["imagefile"]));
             }
         }
 
         parent::loadFromDb($question_id);
     }

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◆ rebuildThumbnails()

assSingleChoice::rebuildThumbnails ( )

protected

Definition at line 150 of file class.assSingleChoice.php.

References generateThumbForFile(), getAnswers(), assQuestion\getImagePath(), and getThumbSize().

Referenced by savePreviewData().

     {
         if ($this->isSingleline && ($this->getThumbSize())) {
             foreach ($this->getAnswers() as $answer) {
                 if (strlen($answer->getImage())) {
                     $this->generateThumbForFile($this->getImagePath(), $answer->getImage());
                 }
             }
         }
     }

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◆ removeAnswerImage()

assSingleChoice::removeAnswerImage ( $index )

Definition at line 1041 of file class.assSingleChoice.php.

References $index, and deleteImage().

     {
         $answer = $this->answers[$index];
         if (is_object($answer)) {
             $this->deleteImage($answer->getImage());
             $answer->setImage('');
         }
     }

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◆ reworkWorkingData()

assSingleChoice::reworkWorkingData	(	$active_id,
		$pass,
		$obligationsAnswered,
		$authorized
	)

protected

{}

Definition at line 721 of file class.assSingleChoice.php.

     {
         // nothing to rework!
     }

◆ savePreviewData()

assSingleChoice::savePreviewData ( ilAssQuestionPreviewSession $previewSession )

protected

Definition at line 649 of file class.assSingleChoice.php.

References $_POST, $ilDB, $key, ilRTE\_replaceMediaObjectImageSrc(), array, ilUtil\delDir(), getAdditionalTableName(), assQuestion\getId(), assQuestion\getImagePath(), assQuestion\getShuffle(), getSpecificFeedbackSetting(), getThumbSize(), rebuildThumbnails(), ilObjQuestionScoringAdjustable\saveAdditionalQuestionDataToDb(), ilObjAnswerScoringAdjustable\saveAnswerSpecificDataToDb(), ilAssQuestionPreviewSession\setParticipantsSolution(), and time.

     {
         if (strlen($_POST['multiple_choice_result' . $this->getId() . 'ID'])) {
             $previewSession->setParticipantsSolution($_POST['multiple_choice_result' . $this->getId() . 'ID']);
         } else {
             $previewSession->setParticipantsSolution(null);
         }
     }

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◆ saveWorkingData()

assSingleChoice::saveWorkingData	(	$active_id,
		$pass = `null`,
		$authorized = `true`
	)

Saves the learners input of the question to the database.

public

Parameters

integer	$active_id	Active id of the user
integer	$pass	Test pass

Returns: boolean $status

Definition at line 602 of file class.assSingleChoice.php.

References $_POST, $ilDB, $ilUser, $pass, $result, $row, ilObjAssessmentFolder\_enabledAssessmentLogging(), ilObjAssessmentFolder\_getLogLanguage(), ilObjTest\_getPass(), assQuestion\getCurrentSolutionResultSet(), assQuestion\getId(), assQuestion\getProcessLocker(), assQuestion\logAction(), assQuestion\removeSolutionRecordById(), assQuestion\saveCurrentSolution(), and assQuestion\updateCurrentSolution().

Referenced by createRandomSolution().

     {
         global $ilDB;
         global $ilUser;
 
         if (is_null($pass)) {
             include_once "./Modules/Test/classes/class.ilObjTest.php";
             $pass = ilObjTest::_getPass($active_id);
         }
 
         $entered_values = 0;
 
         $this->getProcessLocker()->executeUserSolutionUpdateLockOperation(function () use (&$entered_values, $ilDB, $active_id, $pass, $authorized) {
             $result = $this->getCurrentSolutionResultSet($active_id, $pass, $authorized);
             $row    = $ilDB->fetchAssoc($result);
             $update = $row["solution_id"];
 
             if ($update) {
                 if (strlen($_POST["multiple_choice_result"])) {
                     $this->updateCurrentSolution($update, $_POST["multiple_choice_result"], null, $authorized);
                     $entered_values++;
                 } else {
                     $this->removeSolutionRecordById($update);
                 }
             } else {
                 if (strlen($_POST["multiple_choice_result"])) {
                     $this->saveCurrentSolution($active_id, $pass, $_POST['multiple_choice_result'], null, $authorized);
                     $entered_values++;
                 }
             }
         });
 
         if ($entered_values) {
             include_once("./Modules/Test/classes/class.ilObjAssessmentFolder.php");
             if (ilObjAssessmentFolder::_enabledAssessmentLogging()) {
                 assQuestion::logAction($this->lng->txtlng("assessment", "log_user_entered_values", ilObjAssessmentFolder::_getLogLanguage()), $active_id, $this->getId());
             }
         } else {
             include_once("./Modules/Test/classes/class.ilObjAssessmentFolder.php");
             if (ilObjAssessmentFolder::_enabledAssessmentLogging()) {
                 assQuestion::logAction($this->lng->txtlng("assessment", "log_user_not_entered_values", ilObjAssessmentFolder::_getLogLanguage()), $active_id, $this->getId());
             }
         }
         
         return true;
     }

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◆ setExportDetailsXLS()

assSingleChoice::setExportDetailsXLS	(	$worksheet,
		$startrow,
		$active_id,
		$pass
	)

{}

Definition at line 947 of file class.assSingleChoice.php.

References $i, assQuestion\$id, $pass, $worksheet, getAnswers(), and assQuestion\getSolutionValues().

     {
         parent::setExportDetailsXLS($worksheet, $startrow, $active_id, $pass);
 
         $solution = $this->getSolutionValues($active_id, $pass);
         $i = 1;
         foreach ($this->getAnswers() as $id => $answer) {
             $worksheet->setCell($startrow + $i, 0, $answer->getAnswertext());
             $worksheet->setBold($worksheet->getColumnCoord(0) . ($startrow + $i));
             if (
                 count($solution) > 0 &&
                 isset($solution[0]) &&
                 is_array($solution[0]) &&
                 strlen($solution[0]['value1']) > 0 && $id == $solution[0]['value1']
             ) {
                 $worksheet->setCell($startrow + $i, 1, 1);
             } else {
                 $worksheet->setCell($startrow + $i, 1, 0);
             }
             $i++;
         }
 
         return $startrow + $i + 1;
     }

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◆ setImageFile()

assSingleChoice::setImageFile	(	$image_filename,
		$image_tempfilename = `""`
	)

Sets the image file and uploads the image to the object's image directory.

Parameters

string	$image_filename	Name of the original image file
string	$image_tempfilename	Name of the temporary uploaded image file

Returns: integer An errorcode if the image upload fails, 0 otherwise public

Definition at line 767 of file class.assSingleChoice.php.

References $result, generateThumbForFile(), assQuestion\getImagePath(), ilObjMediaObject\getMimeType(), getThumbSize(), and ilUtil\makeDirParents().

     {
         $result = 0;
         if (!empty($image_tempfilename)) {
             $image_filename = str_replace(" ", "_", $image_filename);
             $imagepath = $this->getImagePath();
             if (!file_exists($imagepath)) {
                 ilUtil::makeDirParents($imagepath);
             }
             //if (!move_uploaded_file($image_tempfilename, $imagepath . $image_filename))
             if (!ilUtil::moveUploadedFile($image_tempfilename, $image_filename, $imagepath . $image_filename)) {
                 $result = 2;
             } else {
                 include_once "./Services/MediaObjects/classes/class.ilObjMediaObject.php";
                 $mimetype = ilObjMediaObject::getMimeType($imagepath . $image_filename);
                 if (!preg_match("/^image/", $mimetype)) {
                     unlink($imagepath . $image_filename);
                     $result = 1;
                 } else {
                     // create thumbnail file
                     if ($this->isSingleline && ($this->getThumbSize())) {
                         $this->generateThumbForFile($imagepath, $image_filename);
                     }
                 }
             }
         }
         return $result;
     }

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◆ setMultilineAnswerSetting()

assSingleChoice::setMultilineAnswerSetting ( $a_setting = 0 )

Definition at line 1069 of file class.assSingleChoice.php.

References $ilUser.

     {
         global $ilUser;
         $ilUser->writePref("tst_multiline_answers", $a_setting);
     }

◆ setOutputType()

assSingleChoice::setOutputType ( $output_type = OUTPUT_ORDER )

Sets the output type of the assSingleChoice object.

Parameters

integer $output_type A nonnegative integer value specifying the output type. It is OUTPUT_ORDER (=0) or OUTPUT_RANDOM (=1). public

See also: $response

Definition at line 395 of file class.assSingleChoice.php.

References $output_type.

     {
         $this->output_type = $output_type;
     }

◆ setSpecificFeedbackSetting()

assSingleChoice::setSpecificFeedbackSetting ( $a_feedback_setting )

Sets the feedback settings in effect for the question.

Options are: 1 - Feedback is shown for all answer options. 2 - Feedback is shown for all checked/selected options. 3 - Feedback is shown for all correct options.

Parameters

integer $a_feedback_setting

Definition at line 1084 of file class.assSingleChoice.php.

     {
         $this->feedback_setting = $a_feedback_setting;
     }

◆ setThumbSize()

assSingleChoice::setThumbSize ( $a_size )

Definition at line 977 of file class.assSingleChoice.php.

Referenced by loadFromDb().

     {
         $this->thumb_size = $a_size;
     }

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◆ syncImages()

assSingleChoice::syncImages ( )

protected

Sync images of a MC question on synchronisation with the original question.

Definition at line 889 of file class.assSingleChoice.php.

References $filename, $ilLog, ilUtil\delDir(), assQuestion\getImagePath(), assQuestion\getOriginalId(), getThumbPrefix(), and ilUtil\makeDirParents().

     {
         global $ilLog;
         $question_id = $this->getOriginalId();
         $imagepath = $this->getImagePath();
         $imagepath_original = str_replace("/$this->id/images", "/$question_id/images", $imagepath);
         ilUtil::delDir($imagepath_original);
         foreach ($this->answers as $answer) {
             $filename = $answer->getImage();
             if (strlen($filename)) {
                 if (@file_exists($imagepath . $filename)) {
                     if (!file_exists($imagepath)) {
                         ilUtil::makeDirParents($imagepath);
                     }
                     if (!file_exists($imagepath_original)) {
                         ilUtil::makeDirParents($imagepath_original);
                     }
                     if (!@copy($imagepath . $filename, $imagepath_original . $filename)) {
                         $ilLog->write("image could not be duplicated!!!!", $ilLog->ERROR);
                         $ilLog->write("object: " . print_r($this, true), $ilLog->ERROR);
                     }
                 }
                 if (@file_exists($imagepath . $this->getThumbPrefix() . $filename)) {
                     if (!@copy($imagepath . $this->getThumbPrefix() . $filename, $imagepath_original . $this->getThumbPrefix() . $filename)) {
                         $ilLog->write("image thumbnail could not be duplicated!!!!", $ilLog->ERROR);
                         $ilLog->write("object: " . print_r($this, true), $ilLog->ERROR);
                     }
                 }
             }
         }
     }

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◆ toJSON()

assSingleChoice::toJSON ( )

Returns a JSON representation of the question.

Definition at line 996 of file class.assSingleChoice.php.

References $answers, $key, $mobs, $result, ilObjMediaObject\_getMobsOfObject(), array, assQuestion\formatSAQuestion(), getAnswers(), assQuestion\getId(), assQuestion\getImagePathWeb(), assQuestion\getNrOfTries(), assQuestion\getQuestion(), getQuestionType(), assQuestion\getShuffle(), getThumbSize(), assQuestion\getTitle(), and string.

     {
         include_once("./Services/RTE/classes/class.ilRTE.php");
         $result = array();
         $result['id'] = (int) $this->getId();
         $result['type'] = (string) $this->getQuestionType();
         $result['title'] = (string) $this->getTitle();
         $result['question'] =  $this->formatSAQuestion($this->getQuestion());
         $result['nr_of_tries'] = (int) $this->getNrOfTries();
         $result['shuffle'] = (bool) $this->getShuffle();
         
         $result['feedback'] = array(
             'onenotcorrect' => $this->formatSAQuestion($this->feedbackOBJ->getGenericFeedbackTestPresentation($this->getId(), false)),
             'allcorrect' => $this->formatSAQuestion($this->feedbackOBJ->getGenericFeedbackTestPresentation($this->getId(), true))
         );
 
         $answers = array();
         $has_image = false;
         foreach ($this->getAnswers() as $key => $answer_obj) {
             if ((string) $answer_obj->getImage()) {
                 $has_image = true;
             }
             array_push($answers, array(
                 "answertext" => (string) $this->formatSAQuestion($answer_obj->getAnswertext()),
                 'html_id' => (int) $this->getId() . '_' . $key,
                 "points" => (float) $answer_obj->getPoints(),
                 "order" => (int) $answer_obj->getOrder(),
                 "image" => (string) $answer_obj->getImage(),
                 "feedback" => $this->formatSAQuestion(
                     $this->feedbackOBJ->getSpecificAnswerFeedbackExportPresentation($this->getId(), $key)
                 )
             ));
         }
         $result['answers'] = $answers;
         if ($has_image) {
             $result['path'] = $this->getImagePathWeb();
             $result['thumb'] = $this->getThumbSize();
         }
 
         $mobs = ilObjMediaObject::_getMobsOfObject("qpl:html", $this->getId());
         $result['mobs'] = $mobs;
 
         return json_encode($result);
     }

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Field Documentation

◆ $answers

assSingleChoice::$answers

Definition at line 34 of file class.assSingleChoice.php.

Referenced by getAnswers(), and toJSON().

◆ $feedback_setting

assSingleChoice::$feedback_setting

protected

Definition at line 59 of file class.assSingleChoice.php.

Referenced by getSpecificFeedbackSetting().

◆ $output_type

assSingleChoice::$output_type

Definition at line 44 of file class.assSingleChoice.php.

Referenced by __construct(), getOutputType(), and setOutputType().

◆ $thumb_size

assSingleChoice::$thumb_size

protected

Definition at line 51 of file class.assSingleChoice.php.

Referenced by getThumbSize().

The documentation for this class was generated from the following file:

Modules/TestQuestionPool/classes/class.assSingleChoice.php

Public Member Functions

Static Public Member Functions

Data Fields

Protected Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ __construct()

Member Function Documentation

◆ addAnswer()

◆ afterSyncWithOriginal()

◆ calculateReachedPoints()

◆ calculateReachedPointsFromPreviewSession()

◆ copyObject()

◆ createNewOriginalFromThisDuplicate()

◆ createRandomSolution()

◆ deleteAnswer()

◆ deleteImage()

◆ duplicate()

◆ duplicateImages()

◆ flushAnswers()

◆ generateThumbForFile()

◆ getAdditionalTableName()

◆ getAnswer()

◆ getAnswerCount()

◆ getAnswers()

◆ getAnswerTableName()

◆ getAvailableAnswerOptions()

◆ getExpressionTypes()

◆ getMaximumPoints()

◆ getMultilineAnswerSetting()

◆ getOperators()

◆ getOutputType()

◆ getQuestionType()

◆ getRTETextWithMediaObjects()

◆ getSpecificFeedbackAllCorrectOptionLabel()

◆ getSpecificFeedbackSetting()

◆ getThumbPrefix()

◆ getThumbSize()

◆ isAnswered()

◆ isComplete()

◆ isObligationPossible()

◆ lmMigrateQuestionTypeSpecificContent()

◆ loadFromDb()

◆ rebuildThumbnails()

◆ removeAnswerImage()

◆ reworkWorkingData()

◆ savePreviewData()

◆ saveWorkingData()

◆ setExportDetailsXLS()

◆ setImageFile()

◆ setMultilineAnswerSetting()

◆ setOutputType()

◆ setSpecificFeedbackSetting()

◆ setThumbSize()

◆ syncImages()

◆ toJSON()

Field Documentation

◆ $answers

◆ $feedback_setting

◆ $output_type

◆ $thumb_size