This static class provides access to the other question engine classes. More...

Static Public Member Functions
static	can_questions_finish_during_the_attempt ($behaviour)
	With this behaviour, is it possible that a question might finish as the student interacts with it, without a call to the question_attempt::finish() method?

static	delete_questions_usage_by_activities (qubaid_condition $qubaids)
	Delete from the database.

static	delete_questions_usage_by_activity ($qubaid)
	Delete a question_usage_by_activity from the database, based on its id.

static	get_all_response_file_areas ()

static	get_archetypal_behaviours ()
	Return an array where the keys are the internal names of the archetypal behaviours, and the values are a human-readable name.

static	get_behaviour_name ($behaviour)
	Get the translated name of a behaviour, for display in the UI.

static	get_behaviour_options ($currentbehaviour)
	Return an array where the keys are the internal names of the behaviours in preferred order and the values are a human-readable name.

static	get_behaviour_type ($behaviour)
	Create a behaviour for a particular type.

static	get_behaviour_unused_display_options ($behaviour)

static	get_dp_options ()
	Returns the valid choices for the number of decimal places for showing question marks.

static	initialise_js ()
	Initialise the JavaScript required on pages where questions will be displayed.

static	is_behaviour_archetypal ($behaviour)

static	is_manual_grade_in_range ($qubaid, $slot)
	Validate that the manual grade submitted for a particular question is in range.

static	load_behaviour_class ($behaviour)
	Load the behaviour class(es) belonging to a particular model.

static	load_questions_usage_by_activity ($qubaid, moodle_database $db=null)
	Load a question_usage_by_activity from the database, based on its id.

static	load_used_variants (array $questionids, qubaid_condition $qubaids)
	Get the number of times each variant has been used for each question in a list in a set of usages.

static	make_archetypal_behaviour ($preferredbehaviour, question_attempt $qa)
	Create an archetypal behaviour for a particular question attempt.

static	make_behaviour ($behaviour, question_attempt $qa, $preferredbehaviour)
	Create a behaviour for a particular type.

static	make_questions_usage_by_activity ($component, $context)
	Create a new question_usage_by_activity.

static	questions_in_use (array $questionids, qubaid_condition $qubaids=null)

static	save_questions_usage_by_activity (question_usage_by_activity $quba, moodle_database $db=null)
	Save a question_usage_by_activity to the database.

static	set_max_mark_in_attempts (qubaid_condition $qubaids, $slot, $newmaxmark)
	Change the maxmark for the question_attempt with number in usage $slot for all the specified question_attempts.

static	sort_behaviours ($archetypes, $orderlist, $disabledlist, $current=null)
	Return an array where the keys are the internal names of the behaviours in preferred order and the values are a human-readable name.

Static Protected Member Functions
static	load_behaviour_type_class ($behaviour)
	Load the behaviour type class for a particular behaviour.

Detailed Description

This static class provides access to the other question engine classes.

It provides functions for managing question behaviours), and for creating, loading, saving and deleting , which is the main class that is used by other code that wants to use questions. 2009 The Open University License http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later

Member Function Documentation

◆ can_questions_finish_during_the_attempt()

static question_engine::can_questions_finish_during_the_attempt ( $behaviour )

static

With this behaviour, is it possible that a question might finish as the student interacts with it, without a call to the question_attempt::finish() method?

Parameters

string $behaviour the name of a behaviour. E.g. 'deferredfeedback'.

Return values

bool	whether with this behaviour, questions may finish naturally.

◆ delete_questions_usage_by_activities()

static question_engine::delete_questions_usage_by_activities ( qubaid_condition $qubaids )

static

Delete from the database.

Parameters

qubaid_condition $qubaids identifies which questions usages to delete.

◆ delete_questions_usage_by_activity()

static question_engine::delete_questions_usage_by_activity ( $qubaid )

static

Delete a question_usage_by_activity from the database, based on its id.

Parameters

int $qubaid the id of the usage to delete.

◆ get_all_response_file_areas()

static question_engine::get_all_response_file_areas ( )

static

Return values

array all the file area names that may contain response files.

◆ get_archetypal_behaviours()

static question_engine::get_archetypal_behaviours ( )

static

Return an array where the keys are the internal names of the archetypal behaviours, and the values are a human-readable name.

An archetypal behaviour is one that is suitable to pass the name of to question_usage_by_activity::set_preferred_behaviour().

Return values

array model name => lang string for this behaviour name.

◆ get_behaviour_name()

static question_engine::get_behaviour_name ( $behaviour )

static

Get the translated name of a behaviour, for display in the UI.

Parameters

string $behaviour the internal name of the model.

Return values

string name from the current language pack.

◆ get_behaviour_options()

static question_engine::get_behaviour_options ( $currentbehaviour )

static

Return an array where the keys are the internal names of the behaviours in preferred order and the values are a human-readable name.

Parameters

string $currentbehaviour

Return values

array model name => lang string for this behaviour name.

◆ get_behaviour_type()

static question_engine::get_behaviour_type ( $behaviour )

static

Create a behaviour for a particular type.

If that type cannot be found, return an instance of qbehaviour_missing.

Normally you should use make_archetypal_behaviour(), or call the constructor of a particular model class directly. This method is only intended for use by question_attempt::load_from_records().

Parameters

string	$behaviour	the type of model to create.
question_attempt	$qa	the question attempt the model will process.
string	$preferredbehaviour	the preferred behaviour for the containing usage.

Return values

question_behaviour_type an instance of appropriate behaviour class.

◆ get_behaviour_unused_display_options()

static question_engine::get_behaviour_unused_display_options ( $behaviour )

static

Parameters

string $behaviour the name of a behaviour.

Return values

array of question_display_options field names, that are not relevant to this behaviour before a 'finish' action.

◆ get_dp_options()

static question_engine::get_dp_options ( )

static

Returns the valid choices for the number of decimal places for showing question marks.

For use in the user interface.

Return values

array suitable for passing to html_writer::select() or similar.

◆ initialise_js()

static question_engine::initialise_js ( )

static

Initialise the JavaScript required on pages where questions will be displayed.

Return values

string

◆ is_behaviour_archetypal()

static question_engine::is_behaviour_archetypal ( $behaviour )

static

Parameters

string $behaviour the name of a behaviour. E.g. 'deferredfeedback'.

Return values

bool	whether this is an archetypal behaviour.

◆ is_manual_grade_in_range()

static question_engine::is_manual_grade_in_range	(		$qubaid,
			$slot )

static

Validate that the manual grade submitted for a particular question is in range.

Parameters

int	$qubaid	the question_usage id.
int	$slot	the slot number within the usage.

Return values

bool	whether the submitted data is in range.

◆ load_behaviour_class()

static question_engine::load_behaviour_class ( $behaviour )

static

Load the behaviour class(es) belonging to a particular model.

That is, include_once('/question/behaviour/' . $behaviour . '/behaviour.php'), with a bit of checking.

Parameters

string $qtypename the question type name. For example 'multichoice' or 'shortanswer'.

◆ load_behaviour_type_class()

static question_engine::load_behaviour_type_class ( $behaviour )

staticprotected

Load the behaviour type class for a particular behaviour.

That is, include_once('/question/behaviour/' . $behaviour . '/behaviourtype.php').

Parameters

string $behaviour the behaviour name. For example 'interactive' or 'deferredfeedback'.

◆ load_questions_usage_by_activity()

static question_engine::load_questions_usage_by_activity	(		$qubaid,
		moodle_database	$db = null )

static

Load a question_usage_by_activity from the database, based on its id.

Parameters

int	$qubaid	the id of the usage to load.
moodle_database	$db	a database connectoin. Defaults to global $DB.

Return values

question_usage_by_activity loaded from the database.

◆ load_used_variants()

static question_engine::load_used_variants	(	array	$questionids,
		qubaid_condition	$qubaids )

static

Get the number of times each variant has been used for each question in a list in a set of usages.

Parameters

array	$questionids	of question ids.
qubaid_condition	$qubaids	ids of the usages to consider.

Return values

array questionid => variant number => num uses.

◆ make_archetypal_behaviour()

static question_engine::make_archetypal_behaviour	(		$preferredbehaviour,
		question_attempt	$qa )

static

Create an archetypal behaviour for a particular question attempt.

Used by question_definition::make_behaviour().

Parameters

string	$preferredbehaviour	the type of model required.
question_attempt	$qa	the question attempt the model will process.

Return values

question_behaviour an instance of appropriate behaviour class.

◆ make_behaviour()

static question_engine::make_behaviour	(		$behaviour,
		question_attempt	$qa,
			$preferredbehaviour )

static

Create a behaviour for a particular type.

If that type cannot be found, return an instance of qbehaviour_missing.

Normally you should use make_archetypal_behaviour(), or call the constructor of a particular model class directly. This method is only intended for use by question_attempt::load_from_records().

Parameters

string	$behaviour	the type of model to create.
question_attempt	$qa	the question attempt the model will process.
string	$preferredbehaviour	the preferred behaviour for the containing usage.

Return values

question_behaviour an instance of appropriate behaviour class.

◆ make_questions_usage_by_activity()

static question_engine::make_questions_usage_by_activity	(		$component,
			$context )

static

Create a new question_usage_by_activity.

The usage is created in memory. If you want it to persist, you will need to call save_questions_usage_by_activity().

Parameters

string	$component	the plugin creating this attempt. For example mod_quiz.
context	$context	the context this usage belongs to.

Return values

question_usage_by_activity the newly created object.

◆ questions_in_use()

static question_engine::questions_in_use	(	array	$questionids,
		qubaid_condition	$qubaids = null )

static

Parameters

array	$questionids	of question ids.
qubaid_condition	$qubaids	ids of the usages to consider.

Return values

boolean whether any of these questions are being used by any of those usages.

◆ save_questions_usage_by_activity()

static question_engine::save_questions_usage_by_activity	(	question_usage_by_activity	$quba,
		moodle_database	$db = null )

static

Save a question_usage_by_activity to the database.

This works either if the usage was newly created by make_questions_usage_by_activity() or loaded from the database using load_questions_usage_by_activity()

Parameters

	question_usage_by_activity	the usage to save.
moodle_database	$db	a database connectoin. Defaults to global $DB.

◆ set_max_mark_in_attempts()

static question_engine::set_max_mark_in_attempts	(	qubaid_condition	$qubaids,
			$slot,
			$newmaxmark )

static

Change the maxmark for the question_attempt with number in usage $slot for all the specified question_attempts.

Parameters

qubaid_condition	$qubaids	Selects which usages are updated.
int	$slot	the number is usage to affect.
number	$newmaxmark	the new max mark to set.

◆ sort_behaviours()

static question_engine::sort_behaviours	(	$archetypes,
		$orderlist,
		$disabledlist,
		$current = null )

static

Return an array where the keys are the internal names of the behaviours in preferred order and the values are a human-readable name.

Parameters

array	$archetypes,array	of behaviours
string	$orderlist,a	comma separated list of behaviour names
string	$disabledlist,a	comma separated list of behaviour names
string	$current,current	behaviour name

Return values

array model name => lang string for this behaviour name.

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

question/engine/lib.php

Static Public Member Functions

Static Protected Member Functions

Detailed Description

Member Function Documentation

◆ can_questions_finish_during_the_attempt()

◆ delete_questions_usage_by_activities()

◆ delete_questions_usage_by_activity()

◆ get_all_response_file_areas()

◆ get_archetypal_behaviours()

◆ get_behaviour_name()

◆ get_behaviour_options()

◆ get_behaviour_type()

◆ get_behaviour_unused_display_options()

◆ get_dp_options()

◆ initialise_js()

◆ is_behaviour_archetypal()

◆ is_manual_grade_in_range()

◆ load_behaviour_class()

◆ load_behaviour_type_class()

◆ load_questions_usage_by_activity()

◆ load_used_variants()

◆ make_archetypal_behaviour()

◆ make_behaviour()

◆ make_questions_usage_by_activity()

◆ questions_in_use()

◆ save_questions_usage_by_activity()

◆ set_max_mark_in_attempts()

◆ sort_behaviours()