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Public Member Functions | Data Fields
SurveyMetricQuestion Class Reference
Modules/SurveyQuestionPool

Metric survey question. More...

+ Inheritance diagram for SurveyMetricQuestion:
+ Collaboration diagram for SurveyMetricQuestion:

Public Member Functions

 SurveyMetricQuestion ($title="", $description="", $author="", $questiontext="", $owner=-1, $subtype=SUBTYPE_NON_RATIO)
 SurveyMetricQuestion constructor.
 setSubtype ($subtype=SUBTYPE_NON_RATIO)
 Sets the question subtype.
 setMinimum ($minimum=0)
 Sets the minimum value.
 setMaximum ($maximum="")
 Sets the maximum value.
 getSubtype ()
 Gets the question subtype.
 getMinimum ()
 Returns the minimum value of the question.
 getMaximum ()
 Returns the maximum value of the question.
 _getQuestionDataArray ($id)
 Returns the question data fields from the database.
 loadFromDb ($id)
 Loads a SurveyMetricQuestion object from the database.
 isComplete ()
 Returns true if the question is complete for use.
 saveToDb ($original_id="")
 Saves a SurveyMetricQuestion object to a database.
 toXML ($a_include_header=TRUE, $obligatory_state="")
 Returns an xml representation of the question.
 insertXML (&$a_xml_writer, $a_include_header=TRUE, $obligatory_state="")
 Adds the question XML to a given XMLWriter object.
 syncWithOriginal ()
 getQuestionTypeID ()
 Returns the question type ID of the question.
 getQuestionType ()
 Returns the question type of the question.
 getAdditionalTableName ()
 Returns the name of the additional question data table in the database.
& getWorkingDataFromUserInput ($post_data)
 Creates the user data of the survey_answer table from the POST data.
 checkUserInput ($post_data, $survey_id)
 Checks the input of the active user for obligatory status and entered values.
 saveRandomData ($active_id)
 Saves random answers for a given active user in the database.
 saveUserInput ($post_data, $active_id)
& getCumulatedResults ($survey_id, $nr_of_users)
 setExportDetailsXLS (&$workbook, &$format_title, &$format_bold, &$eval_data)
 Creates an Excel worksheet for the detailed cumulated results of this question.
 addUserSpecificResultsData (&$a_array, &$resultset)
 Adds the values for the user specific results export for a given user.
& getUserAnswers ($survey_id)
 Returns an array containing all answers to this question in a given survey.
 importResponses ($a_data)
 Import response data from the question import file.
 usableForPrecondition ()
 Returns if the question is usable for preconditions.
 getAvailableRelations ()
 Returns the available relations for the question.
 outPreconditionSelectValue (&$template)
 Creates a value selection for preconditions.
 getPreconditionSelectValue ($default="")
 Creates a value selection for preconditions.
 outChart ($survey_id, $type="")
 Creates an image visualising the results of the question.
 getMinMaxText ()
 Creates a text for the input range of the metric question.
- Public Member Functions inherited from SurveyQuestion
 SurveyQuestion ($title="", $description="", $author="", $questiontext="", $owner=-1)
 SurveyQuestion constructor.
 _SurveyQuestion ()
 questionTitleExists ($title, $questionpool_object="")
 Returns TRUE if the question title exists in the database.
 setTitle ($title="")
 Sets the title string.
 setObligatory ($obligatory=1)
 Sets the obligatory state of the question.
 setOrientation ($orientation=0)
 Sets the orientation of the question output.
 setId ($id=-1)
 Sets the id.
 setSurveyId ($id=-1)
 Sets the survey id.
 setDescription ($description="")
 Sets the description.
 addMaterials ($materials_file, $materials_name="")
 Sets the materials uri.
 keyInArray ($searchkey, $array)
 returns TRUE if the key occurs in an array
 setMaterialsfile ($materials_filename, $materials_tempfilename="", $materials_name="")
 Sets and uploads the materials uri.
 deleteMaterial ($materials_name="")
 Deletes a materials uri.
 flushMaterials ()
 Deletes all materials uris.
 setAuthor ($author="")
 Sets the authors name.
 setQuestiontext ($questiontext="")
 Sets the questiontext.
 setOwner ($owner="")
 Sets the creator/owner.
 getTitle ()
 Gets the title string.
 getId ()
 Gets the id.
 getObligatory ($survey_id="")
 Gets the obligatory state of the question.
 getSurveyId ()
 Gets the survey id.
 getOrientation ()
 Gets the orientation of the question output.
 getDescription ()
 Gets the description.
 getAuthor ()
 Gets the authors name.
 getOwner ()
 Gets the creator/owner.
 getQuestiontext ()
 Gets the questiontext.
 getObjId ()
 Get the reference id of the container object.
 setObjId ($obj_id=0)
 Set the reference id of the container object.
 duplicate ($for_survey=true, $title="", $author="", $owner="")
 Duplicates a survey question.
 copyObject ($target_questionpool, $title="")
 Copies an assOrderingQuestion object.
 copyXHTMLMediaObjectsOfQuestion ($a_q_id)
 Increases the media object usage counter when a question is duplicated.
 duplicateMaterials ($question_id)
 Duplicates the materials of a question.
 _isComplete ($question_id)
 Checks wheather the question is complete or not.
 saveCompletionStatus ($original_id="")
 Saves the complete flag to the database.
 saveWorkingData ($limit_to=LIMIT_NO_LIMIT)
 Saves the learners input of the question to the database.
 getImagePath ()
 Returns the image path for web accessable images of a question.
 getMaterialsPath ()
 Returns the materials path for web accessable material of a question.
 getImagePathWeb ()
 Returns the web image path for web accessable images of a question.
 getMaterialsPathWeb ()
 Returns the web image path for web accessable images of a question.
 saveMaterialsToDb ()
 Saves a materials to a database.
 loadMaterialFromDb ($question_id)
 Loads materials uris from a database.
 saveCategoryToDb ($categorytext, $neutral=0)
 Saves a category to the database.
 deleteAdditionalTableData ($question_id)
 Deletes datasets from the additional question table in the database.
 delete ($question_id)
 Deletes a question from the database.
 _getQuestionType ($question_id)
 Returns the question type of a question with a given id.
 _getTitle ($question_id)
 Returns the question title of a question with a given id.
 _getOriginalId ($question_id)
 Returns the original id of a question.
 _getRefIdFromObjId ($obj_id)
 getPhrase ($phrase_id)
 Returns a phrase for a given database id.
 phraseExists ($title)
 Returns true if the phrase title already exists for the current user.
 _questionExists ($question_id)
 Returns true if the question already exists in the database.
 setMaterial ($material_id="", $is_import=false, $material_title="")
 Sets a material link for the question.
 _resolveInternalLink ($internal_link)
 _resolveIntLinks ($question_id)
 _getInternalLinkHref ($target="")
 _isWriteable ($question_id, $user_id)
 Returns true if the question is writeable by a certain user.
& _instanciateQuestion ($question_id)
 Creates an instance of a question with a given question id.
& _instanciateQuestionGUI ($question_id)
 Creates an instance of a question GUI with a given question id.
 isHTML ($a_text)
 Checks if a given string contains HTML or not.
 QTIMaterialToString ($a_material)
 Reads an QTI material tag an creates a text string.
 addMaterialTag (&$a_xml_writer, $a_material, $close_material_tag=TRUE, $add_mobs=TRUE)
 Creates an XML material tag from a plain text or xhtml text.
 prepareTextareaOutput ($txt_output, $prepare_for_latex_output=FALSE)
 Prepares a string for a text area output in surveys.
 addUserSpecificResultsExportTitles (&$a_array)
 Adds the entries for the title row of the user specific results.
 importAdditionalMetadata ($a_meta)
 Import additional meta data from the question import file.
 importAdjectives ($a_data)
 Import bipolar adjectives from the question import file.
 importMatrix ($a_data)
 Import matrix rows from the question import file.
 setExportCumulatedXLS (&$worksheet, &$format_title, &$format_bold, &$eval_data, $row)
 Creates the Excel output for the cumulated results of this question.
& setExportCumulatedCVS (&$eval_data)
 Creates the CSV output for the cumulated results of this question.
 getPreconditionValueOutput ($value)
 Returns the output for a precondition value.
 setOriginalId ($original_id)
 getOriginalId ()

Data Fields

 $subtype
 $minimum
 $maximum
- Data Fields inherited from SurveyQuestion
 $id
 $title
 $description
 $owner
 $author
 $materials
 $survey_id
 $obj_id
 $questiontext
 $obligatory
 $ilias
 $tpl
 $lng
 $orientation
 $material

Additional Inherited Members

- Static Public Member Functions inherited from SurveyQuestion
static _includeClass ($question_type, $gui=0)
 Include the php class file for a given question type.
static _getQuestionTypeName ($type_tag)
 Return the translation for a given question type tag.

Detailed Description

Metric survey question.

The SurveyMetricQuestion class defines and encapsulates basic methods and attributes for metric survey question types.

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
Version
Id:
class.SurveyMetricQuestion.php 19759 2009-04-21 10:45:44Z hschottm

Definition at line 42 of file class.SurveyMetricQuestion.php.

Member Function Documentation

SurveyMetricQuestion::_getQuestionDataArray (   $id)

Returns the question data fields from the database.

Returns the question data fields from the database

Parameters
integer$idThe question ID from the database
Returns
array Array containing the question fields and data from the database public

Reimplemented from SurveyQuestion.

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

References SurveyQuestion\$id, and $result.

{
global $ilDB;
$query = sprintf("SELECT survey_question.*, survey_question_metric.* FROM survey_question, survey_question_metric WHERE survey_question.question_id = %s AND survey_question.question_id = survey_question_metric.question_fi",
$ilDB->quote($id)
);
$result = $ilDB->query($query);
if ($result->numRows() == 1)
{
return $result->fetchRow(MDB2_FETCHMODE_ASSOC);
}
else
{
return array();
}
}
SurveyMetricQuestion::addUserSpecificResultsData ( &  $a_array,
&  $resultset 
)

Adds the values for the user specific results export for a given user.

Adds the values for the user specific results export for a given user

Parameters
array$a_arrayAn array which is used to append the values
array$resultsetThe evaluation data for a given user public

Reimplemented from SurveyQuestion.

Definition at line 953 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\getId().

{
if (count($resultset["answers"][$this->getId()]))
{
foreach ($resultset["answers"][$this->getId()] as $key => $answer)
{
array_push($a_array, $answer["value"]);
}
}
else
{
array_push($a_array, $this->lng->txt("skipped"));
}
}

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SurveyMetricQuestion::checkUserInput (   $post_data,
  $survey_id 
)

Checks the input of the active user for obligatory status and entered values.

Checks the input of the active user for obligatory status and entered values

Parameters
array$post_dataThe contents of the $_POST array
integer$survey_idThe database ID of the active survey
Returns
string Empty string if the input is ok, an error message otherwise public

Definition at line 695 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\$survey_id, SurveyQuestion\getId(), getMaximum(), getMinimum(), SurveyQuestion\getObligatory(), and SUBTYPE_RATIO_ABSOLUTE.

{
$entered_value = $post_data[$this->getId() . "_metric_question"];
// replace german notation with international notation
$entered_value = str_replace(",", ".", $entered_value);
if ((!$this->getObligatory($survey_id)) && (strlen($entered_value) == 0)) return "";
if (strlen($entered_value) == 0) return $this->lng->txt("survey_question_obligatory");
if (strlen($this->getMinimum()))
{
if ($entered_value < $this->getMinimum())
{
return $this->lng->txt("metric_question_out_of_bounds");
}
}
if (strlen($this->getMaximum()))
{
if (($this->getMaximum() == 1) && ($this->getMaximum() < $this->getMinimum()))
{
// old &infty; values as maximum
}
else
{
if ($entered_value > $this->getMaximum())
{
return $this->lng->txt("metric_question_out_of_bounds");
}
}
}
if (!is_numeric($entered_value))
{
return $this->lng->txt("metric_question_not_a_value");
}
if (($this->getSubType() == SUBTYPE_RATIO_ABSOLUTE) && (intval($entered_value) != doubleval($entered_value)))
{
return $this->lng->txt("metric_question_floating_point");
}
return "";
}

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SurveyMetricQuestion::getAdditionalTableName ( )

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

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

Returns
string The additional table name public

Definition at line 659 of file class.SurveyMetricQuestion.php.

{
return "survey_question_metric";
}
SurveyMetricQuestion::getAvailableRelations ( )

Returns the available relations for the question.

Returns the available relations for the question

Returns
array An array containing the available relations public

Reimplemented from SurveyQuestion.

Definition at line 1033 of file class.SurveyMetricQuestion.php.

{
return array("<", "<=", "=", "<>", ">=", ">");
}
& SurveyMetricQuestion::getCumulatedResults (   $survey_id,
  $nr_of_users 
)

Definition at line 784 of file class.SurveyMetricQuestion.php.

References $result, SurveyQuestion\$survey_id, $total, and SurveyQuestion\getId().

Referenced by outChart().

{
global $ilDB;
$question_id = $this->getId();
$result_array = array();
$cumulated = array();
$query = sprintf("SELECT survey_answer.* FROM survey_answer, survey_finished WHERE survey_answer.question_fi = %s AND survey_finished.survey_fi = %s AND survey_finished.finished_id = survey_answer.active_fi",
$ilDB->quote($question_id),
$ilDB->quote($survey_id)
);
$result = $ilDB->query($query);
while ($row = $result->fetchRow(MDB2_FETCHMODE_OBJECT))
{
$cumulated["$row->value"]++;
}
asort($cumulated, SORT_NUMERIC);
end($cumulated);
$numrows = $result->numRows();
$result_array["USERS_ANSWERED"] = $result->numRows();
$result_array["USERS_SKIPPED"] = $nr_of_users - $result->numRows();
$result_array["MODE"] = key($cumulated);
$result_array["MODE_VALUE"] = key($cumulated);
$result_array["MODE_NR_OF_SELECTIONS"] = $cumulated[key($cumulated)];
ksort($cumulated, SORT_NUMERIC);
$counter = 0;
foreach ($cumulated as $value => $nr_of_users)
{
$percentage = 0;
if ($numrows > 0)
{
$percentage = (float)($nr_of_users/$numrows);
}
$result_array["values"][$counter++] = array("value" => $value, "selected" => (int)$nr_of_users, "percentage" => $percentage);
}
$median = array();
$total = 0;
$x_i = 0;
$p_i = 1;
$x_i_inv = 0;
$sum_part_zero = false;
foreach ($cumulated as $value => $key)
{
$total += $key;
for ($i = 0; $i < $key; $i++)
{
array_push($median, $value);
$x_i += $value;
$p_i *= $value;
if ($value != 0)
{
$sum_part_zero = true;
$x_i_inv += 1/$value;
}
}
}
if ($total > 0)
{
if (($total % 2) == 0)
{
$median_value = 0.5 * ($median[($total/2)-1] + $median[($total/2)]);
}
else
{
$median_value = $median[(($total+1)/2)-1];
}
}
else
{
$median_value = "";
}
if ($total > 0)
{
if (($x_i/$total) == (int)($x_i/$total))
{
$result_array["ARITHMETIC_MEAN"] = $x_i/$total;
}
else
{
$result_array["ARITHMETIC_MEAN"] = sprintf("%.2f", $x_i/$total);
}
}
else
{
$result_array["ARITHMETIC_MEAN"] = "";
}
$result_array["MEDIAN"] = $median_value;
$result_array["QUESTION_TYPE"] = "SurveyMetricQuestion";
return $result_array;
}

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SurveyMetricQuestion::getMaximum ( )

Returns the maximum value of the question.

Returns the maximum value of the question

Returns
double The maximum value of the question public
See Also
$maximum

Definition at line 181 of file class.SurveyMetricQuestion.php.

References $maximum.

Referenced by checkUserInput(), getMinMaxText(), insertXML(), and saveRandomData().

{
return $this->maximum;
}

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SurveyMetricQuestion::getMinimum ( )

Returns the minimum value of the question.

Returns the minimum value of the question

Returns
double The minimum value of the question public
See Also
$minimum

Definition at line 163 of file class.SurveyMetricQuestion.php.

References $minimum, and getSubtype().

Referenced by checkUserInput(), getMinMaxText(), insertXML(), and saveRandomData().

{
if ((strlen($this->minimum) == 0) && ($this->getSubtype() > 3))
{
$this->minimum = 0;
}
return $this->minimum;
}

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SurveyMetricQuestion::getMinMaxText ( )

Creates a text for the input range of the metric question.

Creates a text for the input range of the metric question

Returns
string Range text private

Definition at line 1119 of file class.SurveyMetricQuestion.php.

References getMaximum(), and getMinimum().

{
$min = $this->getMinimum();
$max = $this->getMaximum();
if (strlen($min) && strlen($max))
{
return "(" . $min . " " . strtolower($this->lng->txt("to")) . " " . $max . ")";
}
else if (strlen($min))
{
return "(&gt;= " . $min . ")";
}
else if (strlen($max))
{
return "(&lt;= " . $max . ")";
}
else
{
return "";
}
}

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SurveyMetricQuestion::getPreconditionSelectValue (   $default = "")

Creates a value selection for preconditions.

Creates a value selection for preconditions

Returns
The HTML code for the precondition value selection public

Reimplemented from SurveyQuestion.

Definition at line 1061 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\$lng, and ilUtil\prepareFormOutput().

{
global $lng;
include_once "./classes/class.ilTemplate.php";
$template = new ilTemplate("tpl.il_svy_svy_precondition_select_value_textfield.html", TRUE, TRUE, "Modules/Survey");
if (strlen($default))
{
$template->setCurrentBlock("textfield");
$template->setVariable("TEXTFIELD_VALUE", " value=\"" . ilUtil::prepareFormOutput($default) . "\"");
$template->parseCurrentBlock();
}
else
{
$template->touchBlock("textfield");
}
$template->setVariable("SELECT_VALUE", $lng->txt("step") . " 3: " . $lng->txt("enter_value"));
return $template->get();
}

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SurveyMetricQuestion::getQuestionType ( )

Returns the question type of the question.

Returns the question type of the question

Returns
integer The question type of the question public

Reimplemented from SurveyQuestion.

Definition at line 646 of file class.SurveyMetricQuestion.php.

{
return "SurveyMetricQuestion";
}
SurveyMetricQuestion::getQuestionTypeID ( )

Returns the question type ID of the question.

Returns the question type ID of the question

Returns
integer The question type of the question public

Reimplemented from SurveyQuestion.

Definition at line 627 of file class.SurveyMetricQuestion.php.

References $result.

{
global $ilDB;
$query = sprintf("SELECT questiontype_id FROM survey_questiontype WHERE type_tag = %s",
$ilDB->quote($this->getQuestionType())
);
$result = $ilDB->query($query);
$row = $result->fetchRow(MDB2_FETCHMODE_ASSOC);
return $row["questiontype_id"];
}
SurveyMetricQuestion::getSubtype ( )

Gets the question subtype.

Gets the question subtype

Returns
integer The question subtype public
See Also
$subtype

Definition at line 149 of file class.SurveyMetricQuestion.php.

References $subtype.

Referenced by getMinimum(), insertXML(), and setExportDetailsXLS().

{
return $this->subtype;
}

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& SurveyMetricQuestion::getUserAnswers (   $survey_id)

Returns an array containing all answers to this question in a given survey.

Returns an array containing all answers to this question in a given survey

Parameters
integer$survey_idThe database ID of the survey
Returns
array An array containing the answers to the question. The keys are either the user id or the anonymous id public

Reimplemented from SurveyQuestion.

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

References $result, SurveyQuestion\$survey_id, and SurveyQuestion\getId().

{
global $ilDB;
$answers = array();
$query = sprintf("SELECT survey_answer.* FROM survey_answer, survey_finished WHERE survey_finished.survey_fi = %s AND survey_answer.question_fi = %s AND survey_finished.finished_id = survey_answer.active_fi",
$ilDB->quote($survey_id),
$ilDB->quote($this->getId())
);
$result = $ilDB->query($query);
while ($row = $result->fetchRow(MDB2_FETCHMODE_ASSOC))
{
$answers[$row["active_fi"]] = $row["value"];
}
return $answers;
}

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& SurveyMetricQuestion::getWorkingDataFromUserInput (   $post_data)

Creates the user data of the survey_answer table from the POST data.

Creates the user data of the survey_answer table from the POST data

Returns
array User data according to the survey_answer table public

Reimplemented from SurveyQuestion.

Definition at line 672 of file class.SurveyMetricQuestion.php.

References $data, and SurveyQuestion\getId().

{
$entered_value = $post_data[$this->getId() . "_metric_question"];
$data = array();
if (strlen($entered_value))
{
array_push($data, array("value" => $entered_value));
}
return $data;
}

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SurveyMetricQuestion::importResponses (   $a_data)

Import response data from the question import file.

Import response data from the question import file

Returns
array $a_data Array containing the response data public

Reimplemented from SurveyQuestion.

Definition at line 1003 of file class.SurveyMetricQuestion.php.

References $data, SurveyQuestion\$id, setMaximum(), and setMinimum().

{
foreach ($a_data as $id => $data)
{
$this->setMinimum($data["min"]);
$this->setMaximum($data["max"]);
}
}

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SurveyMetricQuestion::insertXML ( &  $a_xml_writer,
  $a_include_header = TRUE,
  $obligatory_state = "" 
)

Adds the question XML to a given XMLWriter object.

Adds the question XML to a given XMLWriter object

Parameters
object$a_xml_writerThe XMLWriter object
boolean$a_include_headerDetermines wheather or not the XML should be used
string$obligatory_stateThe value of the obligatory state public

Definition at line 454 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\addMaterialTag(), SurveyQuestion\getAuthor(), SurveyQuestion\getDescription(), SurveyQuestion\getId(), getMaximum(), getMinimum(), SurveyQuestion\getObligatory(), SurveyQuestion\getQuestiontext(), getSubtype(), and SurveyQuestion\getTitle().

Referenced by toXML().

{
$attrs = array(
"id" => $this->getId(),
"title" => $this->getTitle(),
"type" => $this->getQuestiontype(),
"subtype" => $this->getSubtype(),
"obligatory" => $this->getObligatory()
);
$a_xml_writer->xmlStartTag("question", $attrs);
$a_xml_writer->xmlElement("description", NULL, $this->getDescription());
$a_xml_writer->xmlElement("author", NULL, $this->getAuthor());
$a_xml_writer->xmlStartTag("questiontext");
$this->addMaterialTag($a_xml_writer, $this->getQuestiontext());
$a_xml_writer->xmlEndTag("questiontext");
$a_xml_writer->xmlStartTag("responses");
switch ($this->getSubtype())
{
case 3:
$attrs = array(
"id" => "0",
"format" => "double"
);
if (strlen($this->getMinimum()))
{
$attrs["min"] = $this->getMinimum();
}
if (strlen($this->getMaximum()))
{
$attrs["max"] = $this->getMaximum();
}
break;
case 4:
$attrs = array(
"id" => "0",
"format" => "double"
);
if (strlen($this->getMinimum()))
{
$attrs["min"] = $this->getMinimum();
}
if (strlen($this->getMaximum()))
{
$attrs["max"] = $this->getMaximum();
}
break;
case 5:
$attrs = array(
"id" => "0",
"format" => "integer"
);
if (strlen($this->getMinimum()))
{
$attrs["min"] = $this->getMinimum();
}
if (strlen($this->getMaximum()))
{
$attrs["max"] = $this->getMaximum();
}
break;
}
$a_xml_writer->xmlStartTag("response_num", $attrs);
$a_xml_writer->xmlEndTag("response_num");
$a_xml_writer->xmlEndTag("responses");
if (count($this->material))
{
if (preg_match("/il_(\d*?)_(\w+)_(\d+)/", $this->material["internal_link"], $matches))
{
$attrs = array(
"label" => $this->material["title"]
);
$a_xml_writer->xmlStartTag("material", $attrs);
$intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
if (strcmp($matches[1], "") != 0)
{
$intlink = $this->material["internal_link"];
}
$a_xml_writer->xmlElement("mattext", NULL, $intlink);
$a_xml_writer->xmlEndTag("material");
}
}
$a_xml_writer->xmlEndTag("question");
}

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SurveyMetricQuestion::isComplete ( )

Returns true if the question is complete for use.

Returns true if the question is complete for use

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

Reimplemented from SurveyQuestion.

Definition at line 277 of file class.SurveyMetricQuestion.php.

Referenced by saveToDb(), and syncWithOriginal().

{
if ($this->title and $this->author and $this->questiontext)
{
return 1;
}
else
{
return 0;
}
}

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SurveyMetricQuestion::loadFromDb (   $id)

Loads a SurveyMetricQuestion object from the database.

Loads a SurveyMetricQuestion object from the database

Parameters
integer$idThe database id of the metric survey question public

Reimplemented from SurveyQuestion.

Definition at line 221 of file class.SurveyMetricQuestion.php.

References $data, SurveyQuestion\$id, $result, ilRTE\_replaceMediaObjectImageSrc(), and SurveyQuestion\loadMaterialFromDb().

{
global $ilDB;
$query = sprintf("SELECT survey_question.*, survey_question_metric.* FROM survey_question, survey_question_metric WHERE survey_question.question_id = %s AND survey_question.question_id = survey_question_metric.question_fi",
$ilDB->quote($id)
);
$result = $ilDB->query($query);
if ($result->numRows() == 1)
{
$data = $result->fetchRow(MDB2_FETCHMODE_OBJECT);
$this->id = $data->question_id;
$this->title = $data->title;
$this->description = $data->description;
$this->obj_id = $data->obj_fi;
$this->obligatory = $data->obligatory;
$this->author = $data->author;
$this->subtype = $data->subtype;
$this->original_id = $data->original_id;
$this->owner = $data->owner_fi;
include_once("./Services/RTE/classes/class.ilRTE.php");
$this->questiontext = ilRTE::_replaceMediaObjectImageSrc($data->questiontext, 1);
$this->complete = $data->complete;
// loads materials uris from database
$this->loadMaterialFromDb($id);
$query = sprintf("SELECT survey_variable.* FROM survey_variable WHERE survey_variable.question_fi = %s",
$ilDB->quote($id)
);
$result = $ilDB->query($query);
if ($result->numRows() > 0)
{
if ($data = $result->fetchRow(MDB2_FETCHMODE_OBJECT))
{
$this->minimum = $data->value1;
if (($data->value2 < 0) or (strcmp($data->value2, "") == 0))
{
$this->maximum = "";
}
else
{
$this->maximum = $data->value2;
}
}
}
}
parent::loadFromDb($id);
}

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SurveyMetricQuestion::outChart (   $survey_id,
  $type = "" 
)

Creates an image visualising the results of the question.

Creates an image visualising the results of the question

Parameters
integer$survey_idThe database ID of the survey
string$typeAn additional parameter to allow to draw more than one chart per question. Must be interpreted by the question. Default is an empty string
Returns
binary Image with the visualisation private

Reimplemented from SurveyQuestion.

Definition at line 1091 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\$survey_id, ilObjSurvey\_getNrOfParticipants(), getCumulatedResults(), and SurveyQuestion\getTitle().

{
if (count($this->cumulated) == 0)
{
include_once "./Modules/Survey/classes/class.ilObjSurvey.php";
$nr_of_users = ilObjSurvey::_getNrOfParticipants($survey_id);
$this->cumulated =& $this->getCumulatedResults($survey_id, $nr_of_users);
}
foreach ($this->cumulated["values"] as $key => $value)
{
foreach ($value as $key2 => $value2)
{
$this->cumulated["variables"][$key][$key2] = utf8_decode($value2);
}
}
include_once "./Modules/SurveyQuestionPool/classes/class.SurveyChart.php";
$b1 = new SurveyChart("bars",400,250,utf8_decode($this->getTitle()),utf8_decode($this->lng->txt("answers")),utf8_decode($this->lng->txt("users_answered")),$this->cumulated["values"]);
}

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SurveyMetricQuestion::outPreconditionSelectValue ( &  $template)

Creates a value selection for preconditions.

Creates a value selection for preconditions

Parameters
object$templateThe template for the value selection (usually tpl.svy_svy_add_constraint.html) public

Definition at line 1046 of file class.SurveyMetricQuestion.php.

{
$template->setCurrentBlock("textfield");
$template->setVariable("TEXTFIELD_VALUE", "");
$template->parseCurrentBlock();
}
SurveyMetricQuestion::saveRandomData (   $active_id)

Saves random answers for a given active user in the database.

Parameters
integer$active_idThe database ID of the active user

Definition at line 745 of file class.SurveyMetricQuestion.php.

References $result, getMaximum(), and getMinimum().

{
global $ilDB;
// single response
$number = rand($this->getMinimum(), (strlen($this->getMaximum())) ? $this->getMaximum() : 100);
$query = sprintf("INSERT INTO survey_answer (answer_id, question_fi, active_fi, value, textanswer, TIMESTAMP) VALUES (NULL, %s, %s, %s, NULL, NULL)",
$ilDB->quote($this->getId()),
$ilDB->quote($active_id),
$ilDB->quote($number)
);
$result = $ilDB->query($query);
}

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SurveyMetricQuestion::saveToDb (   $original_id = "")

Saves a SurveyMetricQuestion object to a database.

Saves a SurveyMetricQuestion object to a database

public

Reimplemented from SurveyQuestion.

Definition at line 296 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\$ilias, $result, ilRTE\_cleanupMediaObjectUsage(), ilRTE\_replaceMediaObjectImageSrc(), SurveyQuestion\getId(), isComplete(), and SurveyQuestion\saveMaterialsToDb().

{
global $ilDB;
$complete = 0;
if ($this->isComplete())
{
$complete = 1;
}
if ($original_id)
{
$original_id = $ilDB->quote($original_id);
}
else
{
$original_id = "NULL";
}
// cleanup RTE images which are not inserted into the question text
include_once("./Services/RTE/classes/class.ilRTE.php");
ilRTE::_cleanupMediaObjectUsage($this->questiontext, "spl:html",
$this->getId());
if ($this->id == -1)
{
// Write new dataset
$now = getdate();
$created = sprintf("%04d%02d%02d%02d%02d%02d", $now['year'], $now['mon'], $now['mday'], $now['hours'], $now['minutes'], $now['seconds']);
$query = sprintf("INSERT INTO survey_question (question_id, questiontype_fi, obj_fi, owner_fi, title, description, author, questiontext, obligatory, complete, created, original_id, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, NULL)",
$ilDB->quote($this->getQuestionTypeID()),
$ilDB->quote($this->obj_id),
$ilDB->quote($this->owner),
$ilDB->quote($this->title),
$ilDB->quote($this->description),
$ilDB->quote($this->author),
$ilDB->quote(ilRTE::_replaceMediaObjectImageSrc($this->questiontext, 0)),
$ilDB->quote(sprintf("%d", $this->obligatory)),
$ilDB->quote("$complete"),
$ilDB->quote($created),
$original_id
);
$result = $ilDB->query($query);
if (PEAR::isError($result))
{
global $ilias;
$ilias->raiseError($result->getMessage());
}
else
{
$this->id = $ilDB->getLastInsertId();
$query = sprintf("INSERT INTO survey_question_metric (question_fi, subtype) VALUES (%s, %s)",
$ilDB->quote($this->id . ""),
$ilDB->quote($this->getSubType() . "")
);
$ilDB->query($query);
}
}
else
{
// update existing dataset
$query = sprintf("UPDATE survey_question SET title = %s, description = %s, author = %s, questiontext = %s, obligatory = %s, complete = %s WHERE question_id = %s",
$ilDB->quote($this->title),
$ilDB->quote($this->description),
$ilDB->quote($this->author),
$ilDB->quote(ilRTE::_replaceMediaObjectImageSrc($this->questiontext, 0)),
$ilDB->quote(sprintf("%d", $this->obligatory)),
$ilDB->quote("$complete"),
$ilDB->quote($this->id)
);
$result = $ilDB->query($query);
$query = sprintf("UPDATE survey_question_metric SET subtype = %s WHERE question_fi = %s",
$ilDB->quote($this->getSubType() . ""),
$ilDB->quote($this->id . "")
);
$result = $ilDB->query($query);
}
if (PEAR::isError($result))
{
global $ilias;
$ilias->raiseError($result->getMessage());
}
else
{
// saving material uris in the database
$this->saveMaterialsToDb();
// save categories
// delete existing category relations
$query = sprintf("DELETE FROM survey_variable WHERE question_fi = %s",
$ilDB->quote($this->id)
);
$result = $ilDB->query($query);
// create new category relations
if (strcmp($this->minimum, "") == 0)
{
$min = "NULL";
}
else
{
$min = $ilDB->quote($this->minimum);
}
if (preg_match("/[\D]/", $this->maximum) or (strcmp($this->maximum, "&infin;") == 0))
{
$max = -1;
}
else
{
if (strcmp($this->maximum, "") == 0)
{
$max = "NULL";
}
else
{
$max = $ilDB->quote($this->maximum);
}
}
$query = sprintf("INSERT INTO survey_variable (variable_id, category_fi, question_fi, value1, value2, sequence, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, NULL)",
$ilDB->quote(0),
$ilDB->quote($this->id),
$min,
$max,
$ilDB->quote(0)
);
$answer_result = $ilDB->query($query);
}
parent::saveToDb($original_id);
}

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SurveyMetricQuestion::saveUserInput (   $post_data,
  $active_id 
)

Definition at line 758 of file class.SurveyMetricQuestion.php.

References $result, and SurveyQuestion\getId().

{
global $ilDB;
$entered_value = $post_data[$this->getId() . "_metric_question"];
if (strlen($entered_value) == 0) return;
// replace german notation with international notation
$entered_value = str_replace(",", ".", $entered_value);
if (strlen($entered_value) == 0)
{
$entered_value = "NULL";
}
else
{
$entered_value = $ilDB->quote($entered_value . "");
}
$query = sprintf("INSERT INTO survey_answer (answer_id, question_fi, active_fi, value, textanswer, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, NULL)",
$ilDB->quote($this->getId() . ""),
$ilDB->quote($active_id . ""),
$entered_value,
"NULL"
);
$result = $ilDB->query($query);
}

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SurveyMetricQuestion::setExportDetailsXLS ( &  $workbook,
&  $format_title,
&  $format_bold,
&  $eval_data 
)

Creates an Excel worksheet for the detailed cumulated results of this question.

Creates an Excel worksheet for the detailed cumulated results of this question

Parameters
object$workbookReference to the parent excel workbook
object$format_titleExcel title format
object$format_boldExcel bold format
array$eval_dataCumulated evaluation data public

Reimplemented from SurveyQuestion.

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

References ilExcelUtils\_convert_text(), SurveyQuestion\getQuestiontext(), getSubtype(), SurveyQuestion\getTitle(), SUBTYPE_NON_RATIO, SUBTYPE_RATIO_ABSOLUTE, and SUBTYPE_RATIO_NON_ABSOLUTE.

{
include_once ("./classes/class.ilExcelUtils.php");
$worksheet =& $workbook->addWorksheet();
$worksheet->writeString(0, 0, ilExcelUtils::_convert_text($this->lng->txt("title")), $format_bold);
$worksheet->writeString(0, 1, ilExcelUtils::_convert_text($this->getTitle()));
$worksheet->writeString(1, 0, ilExcelUtils::_convert_text($this->lng->txt("question")), $format_bold);
$worksheet->writeString(1, 1, ilExcelUtils::_convert_text($this->getQuestiontext()));
$worksheet->writeString(2, 0, ilExcelUtils::_convert_text($this->lng->txt("question_type")), $format_bold);
$worksheet->writeString(2, 1, ilExcelUtils::_convert_text($this->lng->txt($this->getQuestionType())));
$worksheet->writeString(3, 0, ilExcelUtils::_convert_text($this->lng->txt("users_answered")), $format_bold);
$worksheet->write(3, 1, $eval_data["USERS_ANSWERED"]);
$worksheet->writeString(4, 0, ilExcelUtils::_convert_text($this->lng->txt("users_skipped")), $format_bold);
$worksheet->write(4, 1, $eval_data["USERS_SKIPPED"]);
$rowcounter = 5;
$worksheet->write($rowcounter, 0, $this->lng->txt("subtype"), $format_bold);
switch ($this->getSubtype())
{
case SUBTYPE_NON_RATIO:
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($this->lng->txt("non_ratio")), $format_bold);
break;
case SUBTYPE_RATIO_NON_ABSOLUTE:
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($this->lng->txt("ratio_non_absolute")), $format_bold);
break;
case SUBTYPE_RATIO_ABSOLUTE:
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($this->lng->txt("ratio_absolute")), $format_bold);
break;
}
$worksheet->write($rowcounter, 0, ilExcelUtils::_convert_text($this->lng->txt("mode")), $format_bold);
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($eval_data["MODE"]));
$worksheet->write($rowcounter, 0, ilExcelUtils::_convert_text($this->lng->txt("mode_text")), $format_bold);
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($eval_data["MODE"]));
$worksheet->write($rowcounter, 0, ilExcelUtils::_convert_text($this->lng->txt("mode_nr_of_selections")), $format_bold);
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($eval_data["MODE_NR_OF_SELECTIONS"]));
$worksheet->write($rowcounter, 0, ilExcelUtils::_convert_text($this->lng->txt("median")), $format_bold);
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($eval_data["MEDIAN"]));
$worksheet->write($rowcounter, 0, ilExcelUtils::_convert_text($this->lng->txt("arithmetic_mean")), $format_bold);
$worksheet->write($rowcounter++, 1, ilExcelUtils::_convert_text($eval_data["ARITHMETIC_MEAN"]));
$worksheet->write($rowcounter, 0, ilExcelUtils::_convert_text($this->lng->txt("values")), $format_bold);
$worksheet->write($rowcounter, 1, ilExcelUtils::_convert_text($this->lng->txt("value")), $format_title);
$worksheet->write($rowcounter, 2, ilExcelUtils::_convert_text($this->lng->txt("category_nr_selected")), $format_title);
$worksheet->write($rowcounter++, 3, ilExcelUtils::_convert_text($this->lng->txt("percentage_of_selections")), $format_title);
$values = "";
if (is_array($eval_data["values"]))
{
foreach ($eval_data["values"] as $key => $value)
{
$worksheet->write($rowcounter, 1, ilExcelUtils::_convert_text($value["value"]));
$worksheet->write($rowcounter, 2, ilExcelUtils::_convert_text($value["selected"]));
$worksheet->write($rowcounter++, 3, ilExcelUtils::_convert_text($value["percentage"]), $format_percent);
}
}
}

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SurveyMetricQuestion::setMaximum (   $maximum = "")

Sets the maximum value.

Sets the maximum value

Parameters
double$maximumThe maximum value public
See Also
$maximum

Definition at line 135 of file class.SurveyMetricQuestion.php.

References $maximum.

Referenced by importResponses().

{
$this->maximum = $maximum;
}

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SurveyMetricQuestion::setMinimum (   $minimum = 0)

Sets the minimum value.

Sets the minimum value

Parameters
double$minimumThe minimum value public
See Also
$minimum

Definition at line 121 of file class.SurveyMetricQuestion.php.

References $minimum.

Referenced by importResponses().

{
$this->minimum = $minimum;
}

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SurveyMetricQuestion::setSubtype (   $subtype = SUBTYPE_NON_RATIO)

Sets the question subtype.

Sets the question subtype

Parameters
integer$subtypeThe question subtype public
See Also
$subtype

Definition at line 107 of file class.SurveyMetricQuestion.php.

References $subtype.

{
$this->subtype = $subtype;
}
SurveyMetricQuestion::SurveyMetricQuestion (   $title = "",
  $description = "",
  $author = "",
  $questiontext = "",
  $owner = -1,
  $subtype = SUBTYPE_NON_RATIO 
)

SurveyMetricQuestion constructor.

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

Parameters
string$titleA title string to describe the question
string$descriptionA description string to describe the question
string$authorA string containing the name of the questions author
integer$ownerA numerical ID to identify the owner/creator public

Definition at line 82 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\$author, SurveyQuestion\$description, SurveyQuestion\$owner, SurveyQuestion\$questiontext, $subtype, SurveyQuestion\$title, and SurveyQuestion\SurveyQuestion().

{
$this->SurveyQuestion($title, $description, $author, $questiontext, $owner);
$this->subtype = $subtype;
$this->minimum = "";
$this->maximum = "";
}

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SurveyMetricQuestion::syncWithOriginal ( )

Reimplemented from SurveyQuestion.

Definition at line 543 of file class.SurveyMetricQuestion.php.

References SurveyQuestion\$ilias, $result, and isComplete().

{
global $ilDB;
if ($this->original_id)
{
$complete = 0;
if ($this->isComplete())
{
$complete = 1;
}
$query = sprintf("UPDATE survey_question SET title = %s, description = %s, author = %s, questiontext = %s, obligatory = %s, complete = %s WHERE question_id = %s",
$ilDB->quote($this->title . ""),
$ilDB->quote($this->description . ""),
$ilDB->quote($this->author . ""),
$ilDB->quote($this->questiontext . ""),
$ilDB->quote(sprintf("%d", $this->obligatory) . ""),
$ilDB->quote($complete . ""),
$ilDB->quote($this->original_id . "")
);
$result = $ilDB->query($query);
$query = sprintf("UPDATE survey_question_metric SET subtype = %s WHERE question_fi = %s",
$ilDB->quote($this->getSubType() . ""),
$ilDB->quote($this->original_id . "")
);
$result = $ilDB->query($query);
if (PEAR::isError($result))
{
global $ilias;
$ilias->raiseError($result->getMessage());
}
else
{
// save categories
// delete existing category relations
$query = sprintf("DELETE FROM survey_variable WHERE question_fi = %s",
$ilDB->quote($this->original_id)
);
$result = $ilDB->query($query);
// create new category relations
if (strcmp($this->minimum, "") == 0)
{
$min = "NULL";
}
else
{
$min = $ilDB->quote($this->minimum . "");
}
if (preg_match("/[\D]/", $this->maximum) or (strcmp($this->maximum, "&infin;") == 0))
{
$max = -1;
}
else
{
if (strcmp($this->maximum, "") == 0)
{
$max = "NULL";
}
else
{
$max = $ilDB->quote($this->maximum . "");
}
}
$query = sprintf("INSERT INTO survey_variable (variable_id, category_fi, question_fi, value1, value2, sequence, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, NULL)",
$ilDB->quote("0"),
$ilDB->quote($this->original_id . ""),
$min,
$max,
$ilDB->quote("0")
);
$answer_result = $ilDB->query($query);
}
}
parent::syncWithOriginal();
}

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SurveyMetricQuestion::toXML (   $a_include_header = TRUE,
  $obligatory_state = "" 
)

Returns an xml representation of the question.

Returns an xml representation of the question

Returns
string The xml representation of the question public

Definition at line 429 of file class.SurveyMetricQuestion.php.

References insertXML(), and ilXmlWriter\xmlHeader().

{
include_once("./classes/class.ilXmlWriter.php");
$a_xml_writer = new ilXmlWriter;
$a_xml_writer->xmlHeader();
$this->insertXML($a_xml_writer, $a_include_header, $obligatory_state);
$xml = $a_xml_writer->xmlDumpMem(FALSE);
if (!$a_include_header)
{
$pos = strpos($xml, "?>");
$xml = substr($xml, $pos + 2);
}
return $xml;
}

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SurveyMetricQuestion::usableForPrecondition ( )

Returns if the question is usable for preconditions.

Returns if the question is usable for preconditions

Returns
boolean TRUE if the question is usable for a precondition, FALSE otherwise public

Reimplemented from SurveyQuestion.

Definition at line 1020 of file class.SurveyMetricQuestion.php.

{
return TRUE;
}

Field Documentation

SurveyMetricQuestion::$maximum

Definition at line 69 of file class.SurveyMetricQuestion.php.

Referenced by getMaximum(), and setMaximum().

SurveyMetricQuestion::$minimum

Definition at line 60 of file class.SurveyMetricQuestion.php.

Referenced by getMinimum(), and setMinimum().

SurveyMetricQuestion::$subtype

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

Referenced by getSubtype(), setSubtype(), and SurveyMetricQuestion().

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