Class for multiple choice tests. More...
Inheritance diagram for ASS_MultipleChoice:
Collaboration diagram for ASS_MultipleChoice:
Public Member Functions | |
| ASS_MultipleChoice ($title="", $comment="", $author="", $owner=-1, $question="", $response=RESPONSE_SINGLE, $output_type=OUTPUT_ORDER) | |
| ASS_MultipleChoice constructor. | |
| isComplete () | |
| Returns true, if a multiple choice question is complete for use. | |
| from_xml ($xml_text) | |
| Imports a question from XML. | |
| to_xml ($a_include_header=true, $a_include_binary=true, $a_shuffle=false, $test_output=false) | |
| Returns a QTI xml representation of the question. | |
| saveToDb ($original_id="") | |
| Saves a ASS_MultipleChoice object to a database. | |
| loadFromDb ($question_id) | |
| Loads a ASS_MultipleChoice object from a database. | |
| addAnswer ($answertext, $points, $answerorder, $correctness) | |
| Adds an answer to the question. | |
| duplicate ($for_test=true, $title="", $author="", $owner="") | |
| Duplicates an ASS_MultipleChoiceQuestion. | |
| get_question () | |
| Gets the multiple choice question. | |
| set_question ($question="") | |
| Sets the multiple choice question. | |
| get_response () | |
| Gets the multiple choice response type. | |
| set_response ($response="") | |
| Sets the multiple choice response type. | |
| get_output_type () | |
| Gets the multiple choice output type. | |
| set_output_type ($output_type=OUTPUT_ORDER) | |
| Sets the multiple choice output type. | |
| add_answer ($answertext="", $points=0.0, $state=0, $order=0) | |
| Adds a possible answer for a multiple choice question. | |
| get_answer_count () | |
| Returns the number of answers. | |
| get_answer ($index=0) | |
| Returns an answer. | |
| delete_answer ($index=0) | |
| Deletes an answer. | |
| flush_answers () | |
| Deletes all answers. | |
| getMaximumPoints () | |
| Returns the maximum points, a learner can reach answering the question. | |
| calculateReachedPoints ($user_id, $test_id) | |
| Returns the points, a learner has reached answering the question. | |
| wasAnsweredByUser ($user_id, $test_id) | |
| Returns if the question was answered by a user or not. | |
| getReachedInformation ($user_id, $test_id) | |
| Returns the evaluation data, a learner has entered to answer the question. | |
| saveWorkingData ($test_id, $limit_to=LIMIT_NO_LIMIT) | |
| Saves the learners input of the question to the database. | |
| syncWithOriginal () | |
| createRandomSolution ($test_id, $user_id) | |
| getQuestionType () | |
| Returns the question type of the question. | |
Data Fields | |
| $question | |
| $answers | |
| $response | |
| $output_type | |
Detailed Description
Class for multiple choice tests.
ASS_MultipleChoice is a class for multiple choice tests. It supports single and multiple response.
- Version:
- Id:
- class.assMultipleChoice.php 8263 2005-08-04 06:29:38Z hschottm
class.assMultipleChoice.php Assessment
Definition at line 46 of file class.assMultipleChoice.php.
Member Function Documentation
| ASS_MultipleChoice::add_answer | ( | $ | answertext = "", |
|
| $ | points = 0.0, |
|||
| $ | state = 0, |
|||
| $ | order = 0 | |||
| ) |
Adds a possible answer for a multiple choice question.
Adds a possible answer for a multiple choice question. A ASS_AnswerBinaryState 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 public
- See also:
- $answers
- ASS_AnswerBinaryState
Definition at line 942 of file class.assMultipleChoice.php.
References ASS_Question::$points.
Referenced by from_xml().
{
$found = -1;
foreach ($this->answers as $key => $value)
{
if ($value->get_order() == $order)
{
$found = $order;
}
}
if ($found >= 0)
{
// Antwort einfügen
$answer = new ASS_AnswerBinaryState($answertext, $points, $found, $state);
array_push($this->answers, $answer);
for ($i = $found + 1; $i < count($this->answers); $i++)
{
$this->answers[$i] = $this->answers[$i-1];
}
$this->answers[$found] = $answer;
}
else
{
// Anwort anhängen
$answer = new ASS_AnswerBinaryState($answertext, $points, count($this->answers), $state);
array_push($this->answers, $answer);
}
}
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| ASS_MultipleChoice::addAnswer | ( | $ | answertext, | |
| $ | points, | |||
| $ | answerorder, | |||
| $ | correctness | |||
| ) |
Adds an answer to the question.
Adds an answer to the question
public
Definition at line 791 of file class.assMultipleChoice.php.
References ASS_Question::$points.
{
array_push($this->answers, new ASS_AnswerBinaryState($answertext, $points, $answerorder, $correctness));
}
| ASS_MultipleChoice::ASS_MultipleChoice | ( | $ | title = "", |
|
| $ | comment = "", |
|||
| $ | author = "", |
|||
| $ | owner = -1, |
|||
| $ | question = "", |
|||
| $ | response = RESPONSE_SINGLE, |
|||
| $ | output_type = OUTPUT_ORDER | |||
| ) |
ASS_MultipleChoice constructor.
The constructor takes possible arguments an creates an instance of the ASS_MultipleChoice 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 multiple choice question integer $response Indicates the response type of the multiple choice question integer $output_type The output order of the multiple choice answers public
- See also:
- ASS_Question:ASS_Question()
Definition at line 101 of file class.assMultipleChoice.php.
References ASS_Question::$author, ASS_Question::$comment, $output_type, ASS_Question::$owner, $question, $response, ASS_Question::$title, and ASS_Question::ASS_Question().
{
$this->ASS_Question($title, $comment, $author, $owner);
$this->question = $question;
$this->response = $response;
$this->output_type = $output_type;
$this->answers = array();
}
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| ASS_MultipleChoice::calculateReachedPoints | ( | $ | user_id, | |
| $ | test_id | |||
| ) |
Returns the points, a learner has reached answering the question.
Returns the points, a learner has reached answering the question The points are calculated from the given answers including checks for all special scoring options in the test container.
- Parameters:
-
integer $user_id The database ID of the learner integer $test_id The database Id of the test containing the question public
Definition at line 1092 of file class.assMultipleChoice.php.
References $data, ASS_Question::$points, $query, $result, $row, ASS_Question::$test_id, $user_id, get_response(), ASS_Question::getId(), getMaximumPoints(), and wasAnsweredByUser().
{
global $ilDB;
$found_values = array();
$query = sprintf("SELECT * FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$ilDB->quote($user_id),
$ilDB->quote($test_id),
$ilDB->quote($this->getId())
);
$result = $ilDB->query($query);
while ($data = $result->fetchRow(DB_FETCHMODE_OBJECT))
{
if (strcmp($data->value1, "") != 0)
{
array_push($found_values, $data->value1);
}
}
$points = 0;
foreach ($this->answers as $key => $answer)
{
if ((count($found_values) > 0) || ($this->get_response() == RESPONSE_MULTIPLE))
{
if ($answer->isStateChecked())
{
if (in_array($key, $found_values))
{
$points += $answer->get_points();
}
}
else
{
if (!in_array($key, $found_values))
{
$points += $answer->get_points();
}
}
}
}
// check for special scoring options in test
$query = sprintf("SELECT * FROM tst_tests WHERE test_id = %s",
$ilDB->quote($test_id)
);
$result = $ilDB->query($query);
if ($result->numRows() == 1)
{
$row = $result->fetchRow(DB_FETCHMODE_ASSOC);
if ($row["mc_scoring"] == 0)
{
if (!$this->wasAnsweredByUser($user_id, $test_id))
{
$points = 0;
}
}
if ($row["count_system"] == 1)
{
if ($points != $this->getMaximumPoints())
{
$points = 0;
}
}
}
else
{
$points = 0;
}
return $points;
}
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| ASS_MultipleChoice::createRandomSolution | ( | $ | test_id, | |
| $ | user_id | |||
| ) |
Reimplemented from ASS_Question.
Definition at line 1372 of file class.assMultipleChoice.php.
References $ilUser, $query, $result, $row, ASS_Question::$test_id, $user_id, and ASS_Question::getId().
{
mt_srand((double)microtime()*1000000);
$answer = mt_rand(0, count($this->answers)-1);
global $ilDB;
global $ilUser;
$db =& $ilDB->db;
if ($this->response == RESPONSE_SINGLE)
{
$query = sprintf("SELECT * FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$db->quote($user_id),
$db->quote($test_id),
$db->quote($this->getId())
);
$result = $db->query($query);
$row = $result->fetchRow(DB_FETCHMODE_OBJECT);
$update = $row->solution_id;
if ($update)
{
$query = sprintf("UPDATE tst_solutions SET value1 = %s WHERE solution_id = %s",
$db->quote($answer),
$db->quote($update));
}
else
{
$query = sprintf("INSERT INTO tst_solutions (solution_id, user_fi, test_fi, question_fi, value1, value2, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, NULL, NULL)",
$db->quote($user_id),
$db->quote($test_id),
$db->quote($this->getId()),
$db->quote($answer)
);
}
$result = $db->query($query);
}
else
{
$query = sprintf("DELETE FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$db->quote($user_id),
$db->quote($test_id),
$db->quote($this->getId())
);
$result = $db->query($query);
$answerarray = array();
for ($i = 0; $i < $answer; $i++)
{
$manswer = mt_rand(0, count($this->answers)-1);
$answerarray[$manswer]++;
}
foreach ($answerarray as $key => $value)
{
$query = sprintf("INSERT INTO tst_solutions (solution_id, user_fi, test_fi, question_fi, value1, value2, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, NULL, NULL)",
$db->quote($user_id),
$db->quote($test_id),
$db->quote($this->getId()),
$db->quote($key)
);
$result = $db->query($query);
}
}
}
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| ASS_MultipleChoice::delete_answer | ( | $ | index = 0 |
) |
Deletes an answer.
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:
- $answers
Definition at line 1020 of file class.assMultipleChoice.php.
{
if ($index < 0) return;
if (count($this->answers) < 1) return;
if ($index >= count($this->answers)) return;
unset($this->answers[$index]);
$this->answers = array_values($this->answers);
for ($i = 0; $i < count($this->answers); $i++)
{
if ($this->answers[$i]->get_order() > $index)
{
$this->answers[$i]->set_order($i);
}
}
}
| ASS_MultipleChoice::duplicate | ( | $ | for_test = true, |
|
| $ | title = "", |
|||
| $ | author = "", |
|||
| $ | owner = "" | |||
| ) |
Duplicates an ASS_MultipleChoiceQuestion.
Duplicates an ASS_MultipleChoiceQuestion
public
Definition at line 803 of file class.assMultipleChoice.php.
References ASS_Question::$author, ASS_Question::$owner, ASS_Question::$title, and ASS_Question::_getOriginalId().
{
if ($this->id <= 0)
{
// The question has not been saved. It cannot be duplicated
return;
}
// duplicate the question in database
$clone = $this;
include_once ("./assessment/classes/class.assQuestion.php");
$original_id = ASS_Question::_getOriginalId($this->id);
$clone->id = -1;
if ($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
$clone->copyPageOfQuestion($original_id);
return $clone->id;
}
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| ASS_MultipleChoice::flush_answers | ( | ) |
Deletes all answers.
Deletes all answers
public
- See also:
- $answers
Definition at line 1044 of file class.assMultipleChoice.php.
{
$this->answers = array();
}
| ASS_MultipleChoice::from_xml | ( | $ | xml_text | ) |
Imports a question from XML.
Sets the attributes of the question from the XML text passed as argument
- Returns:
- boolean True, if the import succeeds, false otherwise public
Definition at line 147 of file class.assMultipleChoice.php.
References ASS_Question::$comment, $idx, $result, ASS_Question::$shuffle, ilQTIUtils::_getRespcondition(), add_answer(), domxml_open_mem(), ASS_Question::getId(), saveToDb(), set_question(), set_response(), ASS_Question::setAuthor(), ASS_Question::setComment(), ASS_Question::setEstimatedWorkingTime(), ASS_Question::setShuffle(), ASS_Question::setSuggestedSolution(), and ASS_Question::setTitle().
{
$result = false;
if (!empty($this->domxml))
{
$this->domxml->free();
}
$xml_text = preg_replace("/>\s*?</", "><", $xml_text);
$this->domxml = domxml_open_mem($xml_text);
if (!empty($this->domxml))
{
$root = $this->domxml->document_element();
$item = $root->first_child();
$this->setTitle($item->get_attribute("title"));
$this->gaps = array();
$itemnodes = $item->child_nodes();
foreach ($itemnodes as $index => $node)
{
switch ($node->node_name())
{
case "qticomment":
$comment = $node->get_content();
if (strpos($comment, "ILIAS Version=") !== false)
{
}
elseif (strpos($comment, "Questiontype=") !== false)
{
}
elseif (strpos($comment, "Author=") !== false)
{
$comment = str_replace("Author=", "", $comment);
$this->setAuthor($comment);
}
else
{
$this->setComment($comment);
}
break;
case "itemmetadata":
$md_array = array();
$metanodes = $node->child_nodes();
foreach ($metanodes as $metanode)
{
switch ($metanode->node_name())
{
case "qtimetadata":
$metafields = $metanode->child_nodes();
foreach ($metafields as $metafield)
{
switch ($metafield->node_name())
{
case "qtimetadatafield":
$metafieldlist = $metafield->child_nodes();
$md = array("label" => "", "entry" => "");
foreach ($metafieldlist as $attr)
{
switch ($attr->node_name())
{
case "fieldlabel":
$md["label"] = $attr->get_content();
break;
case "fieldentry":
$md["entry"] = $attr->get_content();
break;
}
}
array_push($md_array, $md);
break;
}
}
break;
}
}
foreach ($md_array as $md)
{
switch ($md["label"])
{
case "ILIAS_VERSION":
break;
case "QUESTIONTYPE":
break;
case "AUTHOR":
$this->setAuthor($md["entry"]);
break;
}
}
break;
case "duration":
$iso8601period = $node->get_content();
if (preg_match("/P(\d+)Y(\d+)M(\d+)DT(\d+)H(\d+)M(\d+)S/", $iso8601period, $matches))
{
$this->setEstimatedWorkingTime($matches[4], $matches[5], $matches[6]);
}
break;
case "presentation":
$flow = $node->first_child();
$flownodes = $flow->child_nodes();
foreach ($flownodes as $idx => $flownode)
{
if (strcmp($flownode->node_name(), "material") == 0)
{
$mattext = $flownode->first_child();
$this->set_question($mattext->get_content());
}
elseif (strcmp($flownode->node_name(), "response_lid") == 0)
{
$ident = $flownode->get_attribute("ident");
if (strcmp($ident, "MCSR") == 0)
{
$this->set_response(RESPONSE_SINGLE);
}
else
{
$this->set_response(RESPONSE_MULTIPLE);
}
$shuffle = "";
$subnodes = $flownode->child_nodes();
foreach ($subnodes as $node_type)
{
switch ($node_type->node_name())
{
case "render_choice":
$render_choice = $node_type;
if (strcmp($render_choice->node_name(), "render_choice") == 0)
{
$shuffle = $render_choice->get_attribute("shuffle");
$shuf = 0;
if (strcmp(strtolower($shuffle), "yes") == 0)
{
$shuf = 1;
}
$this->setShuffle($shuf);
$labels = $render_choice->child_nodes();
foreach ($labels as $lidx => $response_label)
{
$material = $response_label->first_child();
$mattext = $material->first_child();
$this->add_answer($mattext->get_content(), 0, 0, $response_label->get_attribute("ident"));
}
}
break;
case "material":
$matlabel = $node_type->get_attribute("label");
if (strcmp($matlabel, "suggested_solution") == 0)
{
$mattype = $node_type->first_child();
if (strcmp($mattype->node_name(), "mattext") == 0)
{
$suggested_solution = $mattype->get_content();
if ($suggested_solution)
{
if ($this->getId() < 1)
{
$this->saveToDb();
}
$this->setSuggestedSolution($suggested_solution, 0, true);
}
}
}
break;
}
}
}
}
break;
case "resprocessing":
$resproc_nodes = $node->child_nodes();
foreach ($resproc_nodes as $index => $respcondition)
{
if (strcmp($respcondition->node_name(), "respcondition") == 0)
{
$respcondition_array =& ilQTIUtils::_getRespcondition($respcondition);
$found_answer = 0;
$this->answers[$respcondition_array["conditionvar"]["value"]]->set_points($respcondition_array["setvar"]["points"]);
if ($respcondition_array["conditionvar"]["selected"])
{
$this->answers[$respcondition_array["conditionvar"]["value"]]->setChecked();
}
$feedbacks[$respcondition_array["displayfeedback"]["linkrefid"]] = array(
"type" => $respcondition_array["conditionvar"]["respident"],
"value" => $respcondition_array["conditionvar"]["value"],
"not" => $respcondition_array["conditionvar"]["not"],
"points" => $respcondition_array["setvar"]["points"],
"feedback" => ""
);
}
}
break;
}
}
$result = true;
}
return $result;
}
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| ASS_MultipleChoice::get_answer | ( | $ | index = 0 |
) |
Returns an answer.
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_AnswerBinaryState-Object containing the answer public
- See also:
- $answers
Definition at line 1001 of file class.assMultipleChoice.php.
{
if ($index < 0) return NULL;
if (count($this->answers) < 1) return NULL;
if ($index >= count($this->answers)) return NULL;
return $this->answers[$index];
}
| ASS_MultipleChoice::get_answer_count | ( | ) |
Returns the number of answers.
Returns the number of answers
- Returns:
- integer The number of answers of the multiple choice question public
- See also:
- $answers
Definition at line 985 of file class.assMultipleChoice.php.
{
return count($this->answers);
}
| ASS_MultipleChoice::get_output_type | ( | ) |
Gets the multiple choice output type.
Gets the multiple choice output type which is either OUTPUT_ORDER (=0) or OUTPUT_RANDOM (=1).
- Returns:
- integer The output type of the ASS_MultipleChoice object public
- See also:
- $output_type
Definition at line 909 of file class.assMultipleChoice.php.
{
return $this->output_type;
}
| ASS_MultipleChoice::get_question | ( | ) |
Gets the multiple choice question.
Gets the question string of the ASS_MultipleChoice object
- Returns:
- string The question string of the ASS_MultipleChoice object public
- See also:
- $question
Definition at line 853 of file class.assMultipleChoice.php.
Referenced by to_xml().
{
return $this->question;
}
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| ASS_MultipleChoice::get_response | ( | ) |
Gets the multiple choice response type.
Gets the multiple choice response type which is either RESPONSE_SINGLE (=0) or RESPONSE_MULTI (=1).
- Returns:
- integer The response type of the ASS_MultipleChoice object public
- See also:
- $response
Definition at line 881 of file class.assMultipleChoice.php.
Referenced by calculateReachedPoints(), and getMaximumPoints().
{
return $this->response;
}
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| ASS_MultipleChoice::getMaximumPoints | ( | ) |
Returns the maximum points, a learner can reach answering the question.
Returns the maximum points, a learner can reach answering the question
public
- See also:
- $points
Reimplemented from ASS_Question.
Definition at line 1057 of file class.assMultipleChoice.php.
References ASS_Question::$points, and get_response().
Referenced by calculateReachedPoints(), saveToDb(), and syncWithOriginal().
{
$points = array("set" => 0, "unset" => 0);
if ($this->get_response() == RESPONSE_SINGLE)
{
foreach ($this->answers as $key => $value)
{
if ($value->get_points() > $points["set"])
{
$points["set"] = $value->get_points();
}
}
return $points["set"];
}
else
{
$allpoints = 0;
foreach ($this->answers as $key => $value) {
$allpoints += $value->get_points();
}
return $allpoints;
}
}
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| ASS_MultipleChoice::getQuestionType | ( | ) |
Returns the question type of the question.
Returns the question type of the question
- Returns:
- integer The question type of the question public
Definition at line 1444 of file class.assMultipleChoice.php.
Referenced by saveToDb().
{
if ($this->response == RESPONSE_SINGLE)
{
$question_type = 1;
}
else
{
$question_type = 2;
}
return $question_type;
}
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| ASS_MultipleChoice::getReachedInformation | ( | $ | user_id, | |
| $ | test_id | |||
| ) |
Returns the evaluation data, a learner has entered to answer the question.
Returns the evaluation data, a learner has entered to answer the question
- Parameters:
-
integer $user_id The database ID of the learner integer $test_id The database Id of the test containing the question public
Definition at line 1208 of file class.assMultipleChoice.php.
References $counter, $data, $query, $result, ASS_Question::$test_id, $user_id, and ASS_Question::getId().
{
$found_values = array();
$query = sprintf("SELECT * FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$this->ilias->db->quote($user_id),
$this->ilias->db->quote($test_id),
$this->ilias->db->quote($this->getId())
);
$result = $this->ilias->db->query($query);
while ($data = $result->fetchRow(DB_FETCHMODE_OBJECT))
{
array_push($found_values, $data->value1);
}
$counter = 1;
$user_result = array();
foreach ($found_values as $key => $value)
{
$solution = array(
"order" => "$counter",
"points" => 0,
"true" => 0,
"value" => "",
);
if (strlen($value) > 0)
{
$solution["value"] = $value;
$solution["points"] = $this->answers[$value]->get_points();
if ($this->answers[$value]->isStateChecked())
{
$solution["true"] = 1;
}
}
$counter++;
$user_result[$value] = $solution;
}
return $user_result;
}
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| ASS_MultipleChoice::isComplete | ( | ) |
Returns true, if a multiple choice question is complete for use.
Returns true, if a multiple choice question is complete for use
- Returns:
- boolean True, if the multiple choice question is complete for use, otherwise false public
Reimplemented from ASS_Question.
Definition at line 126 of file class.assMultipleChoice.php.
Referenced by saveToDb(), and syncWithOriginal().
{
if (($this->title) and ($this->author) and ($this->question) and (count($this->answers)))
{
return true;
}
else
{
return false;
}
}
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| ASS_MultipleChoice::loadFromDb | ( | $ | question_id | ) |
Loads a ASS_MultipleChoice object from a database.
Loads a ASS_MultipleChoice object from a database (experimental)
- Parameters:
-
object $db A pear DB object integer $question_id A unique key which defines the multiple choice test in the database public
Reimplemented from ASS_Question.
Definition at line 731 of file class.assMultipleChoice.php.
References $data, ASS_Question::$ilias, $query, $result, ASS_Question::setEstimatedWorkingTime(), and ASS_Question::setShuffle().
{
global $ilias;
$db = & $ilias->db;
$query = sprintf("SELECT * FROM qpl_questions WHERE question_id = %s",
$db->quote($question_id));
$result = $db->query($query);
if (strcmp(strtolower(get_class($result)), db_result) == 0)
{
if ($result->numRows() == 1)
{
$data = $result->fetchRow(DB_FETCHMODE_OBJECT);
$this->id = $question_id;
$this->title = $data->title;
$this->comment = $data->comment;
$this->solution_hint = $data->solution_hint;
$this->original_id = $data->original_id;
$this->obj_id = $data->obj_fi;
$this->author = $data->author;
$this->owner = $data->owner;
$this->points = $data->points;
$this->question = $data->question_text;
$this->response = $data->choice_response;
$this->setShuffle($data->shuffle);
$this->setEstimatedWorkingTime(substr($data->working_time, 0, 2), substr($data->working_time, 3, 2), substr($data->working_time, 6, 2));
}
$query = sprintf("SELECT * FROM qpl_answers WHERE question_fi = %s ORDER BY aorder ASC",
$db->quote($question_id));
$result = $db->query($query);
if (strcmp(strtolower(get_class($result)), db_result) == 0)
{
while ($data = $result->fetchRow(DB_FETCHMODE_OBJECT))
{
if ($this->response == RESPONSE_SINGLE)
{
if ($data->correctness == 0)
{
// fix for older single response answers where points could be given for unchecked answers
$data->correctness = 1;
$data->points = 0;
}
}
array_push($this->answers, new ASS_AnswerBinaryState($data->answertext, $data->points, $data->aorder, $data->correctness));
}
}
}
parent::loadFromDb($question_id);
}
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| ASS_MultipleChoice::saveToDb | ( | $ | original_id = "" |
) |
Saves a ASS_MultipleChoice object to a database.
Saves a ASS_MultipleChoice object to a database (experimental)
- Parameters:
-
object $db A pear DB object public
Reimplemented from ASS_Question.
Definition at line 617 of file class.assMultipleChoice.php.
References ASS_Question::$ilias, $query, $result, ASS_Question::createPageObject(), ASS_Question::getEstimatedWorkingTime(), getMaximumPoints(), getQuestionType(), ASS_Question::getTestId(), ASS_Question::insertIntoTest(), and isComplete().
Referenced by from_xml().
{
global $ilias;
$complete = 0;
if ($this->isComplete())
{
$complete = 1;
}
$db = & $ilias->db;
$estw_time = $this->getEstimatedWorkingTime();
$estw_time = sprintf("%02d:%02d:%02d", $estw_time['h'], $estw_time['m'], $estw_time['s']);
if ($original_id)
{
$original_id = $db->quote($original_id);
}
else
{
$original_id = "NULL";
}
if ($this->id == -1)
{
// Neuen Datensatz schreiben
$now = getdate();
$question_type = $this->getQuestionType();
$created = sprintf("%04d%02d%02d%02d%02d%02d", $now['year'], $now['mon'], $now['mday'], $now['hours'], $now['minutes'], $now['seconds']);
$query = sprintf("INSERT INTO qpl_questions (question_id, question_type_fi, obj_fi, title, comment, author, owner, question_text, points, working_time, shuffle, choice_response, complete, created, original_id, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, %s, NULL)",
$db->quote($question_type),
$db->quote($this->obj_id),
$db->quote($this->title),
$db->quote($this->comment),
$db->quote($this->author),
$db->quote($this->owner),
$db->quote($this->question),
$db->quote($this->getMaximumPoints() . ""),
$db->quote($estw_time),
$db->quote("$this->shuffle"),
$db->quote($this->response),
$db->quote("$complete"),
$db->quote($created),
$original_id
);
$result = $db->query($query);
if ($result == DB_OK)
{
$this->id = $this->ilias->db->getLastInsertId();
// create page object of question
$this->createPageObject();
// Falls die Frage in einen Test eingefügt werden soll, auch diese Verbindung erstellen
if ($this->getTestId() > 0)
{
$this->insertIntoTest($this->getTestId());
}
}
}
else
{
// Vorhandenen Datensatz aktualisieren
$query = sprintf("UPDATE qpl_questions SET obj_fi = %s, title = %s, comment = %s, author = %s, question_text = %s, points = %s, working_time=%s, shuffle = %s, choice_response = %s, complete = %s WHERE question_id = %s",
$db->quote($this->obj_id. ""),
$db->quote($this->title),
$db->quote($this->comment),
$db->quote($this->author),
$db->quote($this->question),
$db->quote($this->getMaximumPoints() . ""),
$db->quote($estw_time),
$db->quote("$this->shuffle"),
$db->quote($this->response),
$db->quote("$complete"),
$db->quote($this->id)
);
$result = $db->query($query);
}
if ($result == DB_OK)
{
// Antworten schreiben
// alte Antworten löschen
$query = sprintf("DELETE FROM qpl_answers WHERE question_fi = %s",
$db->quote($this->id)
);
$result = $db->query($query);
// Anworten wegschreiben
foreach ($this->answers as $key => $value)
{
$answer_obj = $this->answers[$key];
$query = sprintf("INSERT INTO qpl_answers (answer_id, question_fi, answertext, points, aorder, correctness, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, NULL)",
$db->quote($this->id),
$db->quote($answer_obj->get_answertext()),
$db->quote($answer_obj->get_points() . ""),
$db->quote($answer_obj->get_order() . ""),
$db->quote($answer_obj->getState() . "")
);
$answer_result = $db->query($query);
}
}
parent::saveToDb($original_id);
}
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| ASS_MultipleChoice::saveWorkingData | ( | $ | test_id, | |
| $ | limit_to = LIMIT_NO_LIMIT | |||
| ) |
Saves the learners input of the question to the database.
Saves the learners input of the question to the database
- Parameters:
-
integer $test_id The database id of the test containing this question
- Returns:
- boolean Indicates the save status (true if saved successful, false otherwise) public
- See also:
- $answers
Reimplemented from ASS_Question.
Definition at line 1256 of file class.assMultipleChoice.php.
References $_POST, $ilUser, $query, $result, $row, ASS_Question::$test_id, and ASS_Question::getId().
{
global $ilDB;
global $ilUser;
$db =& $ilDB->db;
if ($this->response == RESPONSE_SINGLE)
{
$query = sprintf("SELECT * FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$db->quote($ilUser->id),
$db->quote($test_id),
$db->quote($this->getId())
);
$result = $db->query($query);
$row = $result->fetchRow(DB_FETCHMODE_OBJECT);
$update = $row->solution_id;
if ($update)
{
$query = sprintf("UPDATE tst_solutions SET value1 = %s WHERE solution_id = %s",
$db->quote($_POST["multiple_choice_result"]),
$db->quote($update));
}
else
{
$query = sprintf("INSERT INTO tst_solutions (solution_id, user_fi, test_fi, question_fi, value1, value2, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, NULL, NULL)",
$db->quote($ilUser->id),
$db->quote($test_id),
$db->quote($this->getId()),
$db->quote($_POST["multiple_choice_result"])
);
}
$result = $db->query($query);
}
else
{
$query = sprintf("DELETE FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$db->quote($ilUser->id),
$db->quote($test_id),
$db->quote($this->getId())
);
$result = $db->query($query);
foreach ($_POST as $key => $value)
{
if (preg_match("/^multiple_choice_result_(\d+)/", $key, $matches))
{
$query = sprintf("INSERT INTO tst_solutions (solution_id, user_fi, test_fi, question_fi, value1, value2, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, NULL, NULL)",
$db->quote($ilUser->id),
$db->quote($test_id),
$db->quote($this->getId()),
$db->quote($value)
);
$result = $db->query($query);
}
}
}
parent::saveWorkingData($test_id);
return true;
}
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| ASS_MultipleChoice::set_output_type | ( | $ | output_type = OUTPUT_ORDER |
) |
Sets the multiple choice output type.
Sets the output type of the ASS_MultipleChoice 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 923 of file class.assMultipleChoice.php.
References $output_type.
{
$this->output_type = $output_type;
}
| ASS_MultipleChoice::set_question | ( | $ | question = "" |
) |
Sets the multiple choice question.
Sets the question string of the ASS_MultipleChoice object
- Parameters:
-
string $question A string containing the multiple choice question public
- See also:
- $question
Definition at line 867 of file class.assMultipleChoice.php.
References $question.
Referenced by from_xml().
{
$this->question = $question;
}
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| ASS_MultipleChoice::set_response | ( | $ | response = "" |
) |
Sets the multiple choice response type.
Sets the response type of the ASS_MultipleChoice object
- Parameters:
-
integer $response A nonnegative integer value specifying the response type. It is RESPONSE_SINGLE (=0) or RESPONSE_MULTI (=1). public
- See also:
- $response
Definition at line 895 of file class.assMultipleChoice.php.
References $response.
Referenced by from_xml().
{
$this->response = $response;
}
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| ASS_MultipleChoice::syncWithOriginal | ( | ) |
Reimplemented from ASS_Question.
Definition at line 1316 of file class.assMultipleChoice.php.
References ASS_Question::$ilias, $query, $result, ASS_Question::getEstimatedWorkingTime(), getMaximumPoints(), and isComplete().
{
global $ilias;
if ($this->original_id)
{
$complete = 0;
if ($this->isComplete())
{
$complete = 1;
}
$db = & $ilias->db;
$estw_time = $this->getEstimatedWorkingTime();
$estw_time = sprintf("%02d:%02d:%02d", $estw_time['h'], $estw_time['m'], $estw_time['s']);
$query = sprintf("UPDATE qpl_questions SET obj_fi = %s, title = %s, comment = %s, author = %s, question_text = %s, points = %s, working_time=%s, shuffle = %s, choice_response = %s, complete = %s WHERE question_id = %s",
$db->quote($this->obj_id. ""),
$db->quote($this->title. ""),
$db->quote($this->comment. ""),
$db->quote($this->author. ""),
$db->quote($this->question. ""),
$db->quote($this->getMaximumPoints() . ""),
$db->quote($estw_time. ""),
$db->quote($this->shuffle. ""),
$db->quote($this->response. ""),
$db->quote($complete. ""),
$db->quote($this->original_id. "")
);
$result = $db->query($query);
if ($result == DB_OK)
{
// write answers
// delete old answers
$query = sprintf("DELETE FROM qpl_answers WHERE question_fi = %s",
$db->quote($this->original_id)
);
$result = $db->query($query);
foreach ($this->answers as $key => $value)
{
$answer_obj = $this->answers[$key];
$query = sprintf("INSERT INTO qpl_answers (answer_id, question_fi, answertext, points, aorder, correctness, TIMESTAMP) VALUES (NULL, %s, %s, %s, %s, %s, NULL)",
$db->quote($this->original_id. ""),
$db->quote($answer_obj->get_answertext(). ""),
$db->quote($answer_obj->get_points() . ""),
$db->quote($answer_obj->get_order() . ""),
$db->quote($answer_obj->getState() . "")
);
$answer_result = $db->query($query);
}
}
parent::syncWithOriginal();
}
}
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| ASS_MultipleChoice::to_xml | ( | $ | a_include_header = true, |
|
| $ | a_include_binary = true, |
|||
| $ | a_shuffle = false, |
|||
| $ | test_output = false | |||
| ) |
Returns a QTI xml representation of the question.
Returns a QTI xml representation of the question and sets the internal domxml variable with the DOM XML representation of the QTI xml representation
- Returns:
- string The QTI xml representation of the question public
Definition at line 352 of file class.assMultipleChoice.php.
References $pos, $xml, domxml_open_mem(), get_question(), ASS_Question::getAuthor(), ASS_Question::getComment(), ASS_Question::getEstimatedWorkingTime(), ASS_Question::getShuffle(), ASS_Question::getSuggestedSolution(), ASS_Question::getTitle(), and ASS_Question::pcArrayShuffle().
{
if (!empty($this->domxml))
{
$this->domxml->free();
}
$xml_header = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
$xml_header .= "<questestinterop></questestinterop>\n";
$this->domxml = domxml_open_mem($xml_header);
$root = $this->domxml->document_element();
// qti ident
$qtiIdent = $this->domxml->create_element("item");
$qtiIdent->set_attribute("ident", "il_".IL_INST_ID."_qst_".$this->getId());
$qtiIdent->set_attribute("title", $this->getTitle());
$root->append_child($qtiIdent);
// add question description
$qtiComment = $this->domxml->create_element("qticomment");
$qtiCommentText = $this->domxml->create_text_node($this->getComment());
$qtiComment->append_child($qtiCommentText);
$qtiIdent->append_child($qtiComment);
// add estimated working time
$qtiDuration = $this->domxml->create_element("duration");
$workingtime = $this->getEstimatedWorkingTime();
$qtiDurationText = $this->domxml->create_text_node(sprintf("P0Y0M0DT%dH%dM%dS", $workingtime["h"], $workingtime["m"], $workingtime["s"]));
$qtiDuration->append_child($qtiDurationText);
$qtiIdent->append_child($qtiDuration);
// add ILIAS specific metadata
$qtiItemmetadata = $this->domxml->create_element("itemmetadata");
$qtiMetadata = $this->domxml->create_element("qtimetadata");
$qtiMetadatafield = $this->domxml->create_element("qtimetadatafield");
$qtiFieldlabel = $this->domxml->create_element("fieldlabel");
$qtiFieldlabelText = $this->domxml->create_text_node("ILIAS_VERSION");
$qtiFieldlabel->append_child($qtiFieldlabelText);
$qtiFieldentry = $this->domxml->create_element("fieldentry");
$qtiFieldentryText = $this->domxml->create_text_node($this->ilias->getSetting("ilias_version"));
$qtiFieldentry->append_child($qtiFieldentryText);
$qtiMetadatafield->append_child($qtiFieldlabel);
$qtiMetadatafield->append_child($qtiFieldentry);
$qtiMetadata->append_child($qtiMetadatafield);
$qtiMetadatafield = $this->domxml->create_element("qtimetadatafield");
$qtiFieldlabel = $this->domxml->create_element("fieldlabel");
$qtiFieldlabelText = $this->domxml->create_text_node("QUESTIONTYPE");
$qtiFieldlabel->append_child($qtiFieldlabelText);
$qtiFieldentry = $this->domxml->create_element("fieldentry");
$qtiFieldentryText = $this->domxml->create_text_node(MULTIPLE_CHOICE_QUESTION_IDENTIFIER);
$qtiFieldentry->append_child($qtiFieldentryText);
$qtiMetadatafield->append_child($qtiFieldlabel);
$qtiMetadatafield->append_child($qtiFieldentry);
$qtiMetadata->append_child($qtiMetadatafield);
$qtiMetadatafield = $this->domxml->create_element("qtimetadatafield");
$qtiFieldlabel = $this->domxml->create_element("fieldlabel");
$qtiFieldlabelText = $this->domxml->create_text_node("AUTHOR");
$qtiFieldlabel->append_child($qtiFieldlabelText);
$qtiFieldentry = $this->domxml->create_element("fieldentry");
$qtiFieldentryText = $this->domxml->create_text_node($this->getAuthor());
$qtiFieldentry->append_child($qtiFieldentryText);
$qtiMetadatafield->append_child($qtiFieldlabel);
$qtiMetadatafield->append_child($qtiFieldentry);
$qtiMetadata->append_child($qtiMetadatafield);
$qtiItemmetadata->append_child($qtiMetadata);
$qtiIdent->append_child($qtiItemmetadata);
// PART I: qti presentation
$qtiPresentation = $this->domxml->create_element("presentation");
$qtiPresentation->set_attribute("label", $this->getTitle());
// add flow to presentation
$qtiFlow = $this->domxml->create_element("flow");
// add material with question text to presentation
$qtiMaterial = $this->domxml->create_element("material");
$qtiMatText = $this->domxml->create_element("mattext");
$qtiMatTextText = $this->domxml->create_text_node($this->get_question());
$qtiMatText->append_child($qtiMatTextText);
$qtiMaterial->append_child($qtiMatText);
$qtiFlow->append_child($qtiMaterial);
// add answers to presentation
$qtiResponseLid = $this->domxml->create_element("response_lid");
if ($this->response == RESPONSE_SINGLE)
{
$qtiResponseLid->set_attribute("ident", "MCSR");
$qtiResponseLid->set_attribute("rcardinality", "Single");
}
else
{
$qtiResponseLid->set_attribute("ident", "MCMR");
$qtiResponseLid->set_attribute("rcardinality", "Multiple");
}
$solution = $this->getSuggestedSolution(0);
if (count($solution))
{
if (preg_match("/il_(\d*?)_(\w+)_(\d+)/", $solution["internal_link"], $matches))
{
$qtiMaterial = $this->domxml->create_element("material");
$qtiMaterial->set_attribute("label", "suggested_solution");
$qtiMatText = $this->domxml->create_element("mattext");
$intlink = "il_" . IL_INST_ID . "_" . $matches[2] . "_" . $matches[3];
if (strcmp($matches[1], "") != 0)
{
$intlink = $solution["internal_link"];
}
$qtiMatTextText = $this->domxml->create_text_node($intlink);
$qtiMatText->append_child($qtiMatTextText);
$qtiMaterial->append_child($qtiMatText);
$qtiResponseLid->append_child($qtiMaterial);
}
}
$qtiRenderChoice = $this->domxml->create_element("render_choice");
// shuffle output
if ($this->getShuffle())
{
$qtiRenderChoice->set_attribute("shuffle", "Yes");
}
else
{
$qtiRenderChoice->set_attribute("shuffle", "No");
}
$akeys = array_keys($this->answers);
if ($this->getshuffle() && $a_shuffle)
{
$akeys = $this->pcArrayShuffle($akeys);
}
// add answers
foreach ($akeys as $index)
{
$answer = $this->answers[$index];
$qtiResponseLabel = $this->domxml->create_element("response_label");
$qtiResponseLabel->set_attribute("ident", $index);
$qtiMaterial = $this->domxml->create_element("material");
$qtiMatText = $this->domxml->create_element("mattext");
$qtiMatTextText = $this->domxml->create_text_node($answer->get_answertext());
$qtiMatText->append_child($qtiMatTextText);
$qtiMaterial->append_child($qtiMatText);
$qtiResponseLabel->append_child($qtiMaterial);
$qtiRenderChoice->append_child($qtiResponseLabel);
}
$qtiResponseLid->append_child($qtiRenderChoice);
$qtiFlow->append_child($qtiResponseLid);
$qtiPresentation->append_child($qtiFlow);
$qtiIdent->append_child($qtiPresentation);
// PART II: qti resprocessing
$qtiResprocessing = $this->domxml->create_element("resprocessing");
$qtiOutcomes = $this->domxml->create_element("outcomes");
$qtiDecvar = $this->domxml->create_element("decvar");
$qtiOutcomes->append_child($qtiDecvar);
$qtiResprocessing->append_child($qtiOutcomes);
// add response conditions
foreach ($this->answers as $index => $answer)
{
$qtiRespcondition = $this->domxml->create_element("respcondition");
$qtiRespcondition->set_attribute("continue", "Yes");
// qti conditionvar
$qtiConditionvar = $this->domxml->create_element("conditionvar");
if (!$answer->isStateSet())
{
$qtinot = $this->domxml->create_element("not");
}
$qtiVarequal = $this->domxml->create_element("varequal");
if ($this->response == RESPONSE_SINGLE)
{
$qtiVarequal->set_attribute("respident", "MCSR");
}
else
{
$qtiVarequal->set_attribute("respident", "MCMR");
}
$qtiVarequalText = $this->domxml->create_text_node($index);
$qtiVarequal->append_child($qtiVarequalText);
if (!$answer->isStateSet())
{
$qtiConditionvar->append_child($qtinot);
$qtinot->append_child($qtiVarequal);
}
else
{
$qtiConditionvar->append_child($qtiVarequal);
}
// qti setvar
$qtiSetvar = $this->domxml->create_element("setvar");
$qtiSetvar->set_attribute("action", "Add");
$qtiSetvarText = $this->domxml->create_text_node($answer->get_points());
$qtiSetvar->append_child($qtiSetvarText);
// qti displayfeedback
$qtiDisplayfeedback = $this->domxml->create_element("displayfeedback");
$qtiDisplayfeedback->set_attribute("feedbacktype", "Response");
$linkrefid = "";
if ($answer->isStateChecked())
{
if ($this->response == RESPONSE_SINGLE)
{
$linkrefid = "True";
}
else
{
$linkrefid = "True_$index";
}
}
else
{
$linkrefid = "False_$index";
}
$qtiDisplayfeedback->set_attribute("linkrefid", $linkrefid);
$qtiRespcondition->append_child($qtiConditionvar);
$qtiRespcondition->append_child($qtiSetvar);
$qtiRespcondition->append_child($qtiDisplayfeedback);
$qtiResprocessing->append_child($qtiRespcondition);
}
$qtiIdent->append_child($qtiResprocessing);
// PART III: qti itemfeedback
foreach ($this->answers as $index => $answer)
{
$qtiItemfeedback = $this->domxml->create_element("itemfeedback");
$linkrefid = "";
if ($answer->isStateChecked())
{
if ($this->response == RESPONSE_SINGLE)
{
$linkrefid = "True";
}
else
{
$linkrefid = "True_$index";
}
}
else
{
$linkrefid = "False_$index";
}
$qtiItemfeedback->set_attribute("ident", $linkrefid);
$qtiItemfeedback->set_attribute("view", "All");
// qti flow_mat
$qtiFlowmat = $this->domxml->create_element("flow_mat");
$qtiMaterial = $this->domxml->create_element("material");
$qtiMattext = $this->domxml->create_element("mattext");
// Insert response text for right/wrong answers here!!!
$qtiMattextText = $this->domxml->create_text_node("");
$qtiMattext->append_child($qtiMattextText);
$qtiMaterial->append_child($qtiMattext);
$qtiFlowmat->append_child($qtiMaterial);
$qtiItemfeedback->append_child($qtiFlowmat);
$qtiIdent->append_child($qtiItemfeedback);
}
$xml = $this->domxml->dump_mem(true);
if (!$a_include_header)
{
$pos = strpos($xml, "?>");
$xml = substr($xml, $pos + 2);
}
//echo htmlentities($xml);
return $xml;
}
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| ASS_MultipleChoice::wasAnsweredByUser | ( | $ | user_id, | |
| $ | test_id | |||
| ) |
Returns if the question was answered by a user or not.
Returns if the question was answered by a user or not
- Parameters:
-
integer $user_id The database ID of the learner integer $test_id The database Id of the test containing the question
- Returns:
- boolean public
Definition at line 1172 of file class.assMultipleChoice.php.
References $data, $query, $result, ASS_Question::$test_id, $user_id, and ASS_Question::getId().
Referenced by calculateReachedPoints().
{
global $ilDB;
$found_values = array();
$query = sprintf("SELECT * FROM tst_solutions WHERE user_fi = %s AND test_fi = %s AND question_fi = %s",
$ilDB->quote($user_id),
$ilDB->quote($test_id),
$ilDB->quote($this->getId())
);
$result = $ilDB->query($query);
while ($data = $result->fetchRow(DB_FETCHMODE_OBJECT))
{
if (strcmp($data->value1, "") != 0)
{
array_push($found_values, $data->value1);
}
}
if (count($found_values) == 0)
{
return FALSE;
}
else
{
return TRUE;
}
}
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Field Documentation
| ASS_MultipleChoice::$answers |
Definition at line 64 of file class.assMultipleChoice.php.
| ASS_MultipleChoice::$output_type |
Definition at line 84 of file class.assMultipleChoice.php.
Referenced by ASS_MultipleChoice(), and set_output_type().
| ASS_MultipleChoice::$question |
Definition at line 55 of file class.assMultipleChoice.php.
Referenced by ASS_MultipleChoice(), and set_question().
| ASS_MultipleChoice::$response |
Definition at line 74 of file class.assMultipleChoice.php.
Referenced by ASS_MultipleChoice(), and set_response().
The documentation for this class was generated from the following file:
- assessment/classes/class.assMultipleChoice.php
