Moodle PHP Documentation 4.3
Moodle 4.3.5 (Build: 20240610) (7dcfaa79f78)
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The short answer question type. More...
Public Member Functions | |
actual_number_of_questions ($question) | |
Returns the number of question numbers which are used by the question. | |
break_down_stats_and_response_analysis_by_variant ($questiondata) | |
Whether or not to break down question stats and response analysis, for a question defined by $questiondata. | |
can_analyse_responses () | |
Whether this question type can perform a frequency analysis of student responses. | |
create_editing_form ($submiturl, $question, $category, $contexts, $formeditable) | |
Return an instance of the question editing form definition. | |
delete_question ($questionid, $contextid) | |
Deletes the question-type specific data when a question is deleted. | |
display_question_editing_page ($mform, $question, $wizardnow) | |
This method should be overriden if you want to include a special heading or some other html on a question editing page besides the question editing form. | |
export_to_xml ($question, qformat_xml $format, $extra=null) | |
extra_answer_fields () | |
If your question type has a table that extends the question_answers table, make this method return an array wherer the first element is the table name, and the subsequent entries are the column names (apart from id and answerid). | |
extra_question_fields () | |
If your question type has a table that extends the question table, and you want the base class to automatically save, backup and restore the extra fields, override this method to return an array wherer the first element is the table name, and the subsequent entries are the column names (apart from id and questionid). | |
find_standard_scripts () | |
Utility method used by qtype_renderer::head_code(). | |
finished_edit_wizard ($form) | |
Returns true if the editing wizard is finished, false otherwise. | |
generate_test ($name, $courseid=null) | |
Abstract function implemented by each question type. | |
get_default_value (string $name, $default) | |
Return default value for a given form element either from user_preferences table or $default. | |
get_extra_question_bank_actions (stdClass $question) | |
Get extra actions for a question of this type to add to the question bank edit menu. | |
get_heading ($adding=false) | |
Method called by display_question_editing_page and by question.php to get heading for breadcrumbs. | |
get_possible_responses ($questiondata) | |
This method should return all the possible types of response that are recognised for this question. | |
get_question_options ($question) | |
Loads the question type specific options for the question. | |
get_random_guess_score ($questiondata) | |
Calculate the score a monkey would get on a question by clicking randomly. | |
has_html_answers () | |
import_file ($context, $component, $filearea, $itemid, $file) | |
import_from_xml ($data, $question, qformat_xml $format, $extra=null) | |
is_manual_graded () | |
is_question_manual_graded ($question, $otherquestionsinuse) | |
is_real_question_type () | |
is_usable_by_random () | |
local_name () | |
make_question ($questiondata) | |
Create an appropriate question_definition for the question of this type using data loaded from the database. | |
menu_name () | |
The name this question should appear as in the create new question dropdown. | |
move_files ($questionid, $oldcontextid, $newcontextid) | |
Move all the files belonging to this question from one context to another. | |
name () | |
plugin_baseurl () | |
plugin_dir () | |
plugin_name () | |
questionid_column_name () | |
If you use extra_question_fields, overload this function to return question id field name in case you table use another name for this column. | |
response_file_areas () | |
If the quetsion type uses files in responses, then this method should return an array of all the response variables that might have corresponding files. | |
save_defaults_for_new_questions (stdClass $fromform) | |
Save question defaults when creating new questions. | |
save_hints ($formdata, $withparts=false) | |
save_question ($question, $form) | |
Saves (creates or updates) a question. | |
save_question_answers ($question) | |
Save the answers, with any extra data. | |
save_question_options ($question) | |
Saves question-type specific options. | |
set_default_options ($questiondata) | |
Set any missing settings for this question to the default values. | |
set_default_value (string $name, string $value) | |
Save the default value for a given form element in user_preferences table. | |
Protected Member Functions | |
count_hints_on_form ($formdata, $withparts) | |
Count number of hints on the form. | |
decode_file ($file) | |
delete_files ($questionid, $contextid) | |
Delete all the files belonging to this question. | |
delete_files_in_answers ($questionid, $contextid, $answerstoo=false) | |
Delete all the files belonging to this question's answers. | |
delete_files_in_combined_feedback ($questionid, $contextid) | |
Delete all the files belonging to this question's answers. | |
delete_files_in_hints ($questionid, $contextid) | |
Delete all the files belonging to this question's hints. | |
fill_answer_fields ($answer, $questiondata, $key, $context) | |
Return $answer, filling necessary fields for the question_answers table. | |
fill_extra_answer_fields ($answerextra, $questiondata, $key, $context, $extraanswerfields) | |
Return $answerextra, filling necessary fields for the extra answer fields table. | |
get_context_by_category_id ($category) | |
Get question context by category id. | |
import_or_save_files ($field, $context, $component, $filearea, $itemid) | |
Save the file belonging to one text field. | |
initialise_combined_feedback (question_definition $question, $questiondata, $withparts=false) | |
Initialise the combined feedback fields. | |
initialise_core_question_metadata (question_definition $question, $questiondata) | |
Initialise the question metadata. | |
initialise_custom_fields (question_definition $question, $questiondata) | |
Initialise question custom fields. | |
initialise_question_answers (question_definition $question, $questiondata, $forceplaintextanswers=true) | |
Initialise question_definition\answers field. | |
initialise_question_hints (question_definition $question, $questiondata) | |
Initialise question_definition\hints field. | |
initialise_question_instance (question_definition $question, $questiondata) | |
Initialise the common question_definition fields. | |
is_answer_empty ($questiondata, $key) | |
Returns true is answer with the $key is empty in the question data and should not be saved in DB. | |
is_extra_answer_fields_empty ($questiondata, $key) | |
Returns true if extra answer fields for answer with the $key is empty in the question data and should not be saved in DB. | |
is_hint_empty_in_form_data ($formdata, $number, $withparts) | |
Determine if the hint with specified number is not empty and should be saved. | |
make_answer ($answer) | |
Create a question_answer, or an appropriate subclass for this question, from a row loaded from the database. | |
make_hint ($hint) | |
Create a question_hint, or an appropriate subclass for this question, from a row loaded from the database. | |
make_question_instance ($questiondata) | |
Create an appropriate question_definition for the question of this type using data loaded from the database. | |
move_files_in_answers ($questionid, $oldcontextid, $newcontextid, $answerstoo=false) | |
Move all the files belonging to this question's answers when the question is moved from one context to another. | |
move_files_in_combined_feedback ($questionid, $oldcontextid, $newcontextid) | |
Move all the files belonging to this question's answers when the question is moved from one context to another. | |
move_files_in_hints ($questionid, $oldcontextid, $newcontextid) | |
Move all the files belonging to this question's hints when the question is moved from one context to another. | |
save_combined_feedback_helper ($options, $formdata, $context, $withparts=false) | |
Can be used to save_question_options() to transfer the combined feedback fields from $formdata to $options. | |
save_hint_options ($formdata, $number, $withparts) | |
Save additional question type data into the hint optional field. | |
Protected Attributes | |
$fileoptions | |
The short answer question type.
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inherited |
Returns the number of question numbers which are used by the question.
This function returns the number of question numbers to be assigned to the question. Most question types will have length one; they will be assigned one number. The 'description' type, however does not use up a number and so has a length of zero. Other question types may wish to handle a bundle of questions and hence return a number greater than one.
int | The number of question numbers which should be assigned to the question. |
object | $question | The question whose length is to be determined. Question type specific information is included. |
Reimplemented in qtype_description.
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inherited |
Whether or not to break down question stats and response analysis, for a question defined by $questiondata.
object | $questiondata | The full question definition data. |
bool |
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inherited |
Whether this question type can perform a frequency analysis of student responses.
If this method returns true, you must implement the get_possible_responses method, and the question_definition class must implement the classify_response method.
bool | whether this report can analyse all the student responses for things like the quiz statistics report. |
Reimplemented in qtype_description, qtype_missingtype, qtype_multianswer, and qtype_randomsamatch.
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protectedinherited |
Count number of hints on the form.
Overload if you use custom hint controls.
object | $formdata | the data from the form. |
bool | $withparts | whether to take into account clearwrong and shownumcorrect options. |
int | count of hints on the form. |
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inherited |
Return an instance of the question editing form definition.
This looks for a class called edit_{$this->name()}_question_form in the file question/type/{$this->name()}/edit_{$this->name()}_question_form.php and if it exists returns an instance of it.
string | $submiturl | passed on to the constructor call. |
object | an instance of the form definition, or null if one could not be found. |
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protected |
Delete all the files belonging to this question.
int | $questionid | the question being deleted. |
int | $contextid | the context the question is in. |
Reimplemented from question_type.
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protectedinherited |
Delete all the files belonging to this question's answers.
int | $questionid | the question being deleted. |
int | $contextid | the context the question is in. |
bool | $answerstoo | whether there is an 'answer' question area, as well as an 'answerfeedback' one. Default false. |
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protectedinherited |
Delete all the files belonging to this question's answers.
int | $questionid | the question being deleted. |
int | $contextid | the context the question is in. |
bool | $answerstoo | whether there is an 'answer' question area, as well as an 'answerfeedback' one. Default false. |
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protectedinherited |
Delete all the files belonging to this question's hints.
int | $questionid | the question being deleted. |
int | $contextid | the context the question is in. |
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inherited |
Deletes the question-type specific data when a question is deleted.
int | $question | the question being deleted. |
int | $contextid | the context this quesiotn belongs to. |
Reimplemented in qtype_calculated, qtype_ddtoimage_base, qtype_essay, qtype_gapselect_base, qtype_match, qtype_multianswer, qtype_multichoice, qtype_numerical, qtype_randomsamatch, and qtype_truefalse.
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inherited |
This method should be overriden if you want to include a special heading or some other html on a question editing page besides the question editing form.
question_edit_form | $mform | a child of question_edit_form |
object | $question | |
string | $wizardnow | is '' for first page. |
Reimplemented in qtype_calculated, and qtype_missingtype.
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inherited |
Reimplemented in qtype_randomsamatch.
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inherited |
If your question type has a table that extends the question_answers table, make this method return an array wherer the first element is the table name, and the subsequent entries are the column names (apart from id and answerid).
mixed | array as above, or null to tell the base class to do nothing. |
qtype_shortanswer::extra_question_fields | ( | ) |
If your question type has a table that extends the question table, and you want the base class to automatically save, backup and restore the extra fields, override this method to return an array wherer the first element is the table name, and the subsequent entries are the column names (apart from id and questionid).
mixed | array as above, or null to tell the base class to do nothing. |
Reimplemented from question_type.
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protected |
Return $answer, filling necessary fields for the question_answers table.
The questions using question_answers table may want to overload this. Default code will work for shortanswer and similar question types.
stdClass | $answer | Object to save data. |
object | $questiondata | This holds the information from the question editing form or import. |
int | $key | A key of the answer in question. |
object | $context | needed for working with files. |
$answer | answer with filled data. |
Reimplemented from question_type.
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protectedinherited |
Return $answerextra, filling necessary fields for the extra answer fields table.
The questions may want to overload it to save files or do other data processing.
stdClass | $answerextra | Object to save data. |
object | $questiondata | This holds the information from the question editing form or import. |
int | $key | A key of the answer in question. |
object | $context | needed for working with files. |
array | $extraanswerfields | extra answer fields (without table name). |
$answer | answerextra with filled data. |
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inherited |
Utility method used by qtype_renderer::head_code().
It looks for any of the files script.js or script.php that exist in the plugin folder and ensures they get included.
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inherited |
Returns true if the editing wizard is finished, false otherwise.
The default implementation returns true, which is suitable for all question- types that only use one editing form. This function is used in question.php to decide whether we can regrade any states of the edited question and redirect to edit.php.
The dataset dependent question-type, which is extended by the calculated question-type, overwrites this method because it uses multiple pages (i.e. a wizard) to set up the question and associated datasets.
object | $form | The data submitted by the previous page. |
bool | Whether the wizard's last page was submitted or not. |
Reimplemented in qtype_calculated, and qtype_calculatedsimple.
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inherited |
Abstract function implemented by each question type.
It runs all the code required to set up and save a question of any type for testing purposes. Alternate DB table prefix may be used to facilitate data deletion.
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protectedinherited |
Get question context by category id.
int | $category |
object\$context |
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inherited |
Return default value for a given form element either from user_preferences table or $default.
string | $name | the name of the form element. |
mixed | $default | default value. |
string|null | default value for a given form element. |
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inherited |
Get extra actions for a question of this type to add to the question bank edit menu.
This method is called if the edit_menu_column is being used in the question bank, which it is by default since Moodle 3.8. If applicable for your question type, you can return arn array of . These will be added at the end of the Edit menu for this question. The $question object passed in will have a hard-to-predict set of fields, because the fields present depend on which columns are included in the question bank view. However, you can rely on 'id', 'createdby', 'contextid', 'hidden' and 'category' (id) being present, and so you can call question_has_capability_on without causing performance problems. stdClass $question the available information about the particular question the action is for. action_menu_link[] any actions you want to add to the Edit menu for this question.
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inherited |
Method called by display_question_editing_page and by question.php to get heading for breadcrumbs.
string | the heading |
qtype_shortanswer::get_possible_responses | ( | $questiondata | ) |
This method should return all the possible types of response that are recognised for this question.
The question is modelled as comprising one or more subparts. For each subpart, there are one or more classes that that students response might fall into, each of those classes earning a certain score.
For example, in a shortanswer question, there is only one subpart, the text entry field. The response the student gave will be classified according to which of the possible $question->options->answers it matches.
For the matching question type, there will be one subpart for each question stem, and for each stem, each of the possible choices is a class of student's response.
A response is an object with two fields, ->responseclass is a string presentation of that response, and ->fraction, the credit for a response in that class.
Array keys have no specific meaning, but must be unique, and must be the same if this function is called repeatedly.
object | $question | the question definition data. |
array | keys are subquestionid, values are arrays of possible responses to that subquestion. |
Reimplemented from question_type.
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inherited |
Loads the question type specific options for the question.
This function loads any question type specific options for the question from the database into the question object. This information is placed in the $question->options field. A question type is free, however, to decide on a internal structure of the options field.
bool | Indicates success or failure. |
object | $question | The question object for the question. This object should be updated to include the question type specific information (it is passed by reference). |
Reimplemented in qtype_calculated, qtype_ddtoimage_base, qtype_essay, qtype_gapselect_base, qtype_match, qtype_multianswer, qtype_multichoice, qtype_numerical, qtype_random, qtype_randomsamatch, and qtype_truefalse.
qtype_shortanswer::get_random_guess_score | ( | $questiondata | ) |
Calculate the score a monkey would get on a question by clicking randomly.
Some question types have significant non-zero average expected score of the response is just selected randomly. For example 50% for a true-false question. It is useful to know what this is. For example it gets shown in the quiz statistics report.
For almost any open-ended question type (E.g. shortanswer or numerical) this should be 0.
For selective response question types (e.g. multiple choice), you can probably compute this.
For particularly complicated question types the may be impossible or very difficult to compute. In this case return null. (Or, if the expected score is very tiny even though the exact value is unknown, it may appropriate to return 0.)
stdClass | $questiondata | data defining a question, as returned by question_bank\load_question_data(). |
number|null | either a fraction estimating what the student would score by guessing, or null, if it is not possible to estimate. |
Reimplemented from question_type.
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inherited |
whether | the question_answers.answer field needs to have restore_decode_content_links_worker called on it. |
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Reimplemented in qtype_randomsamatch.
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protectedinherited |
Save the file belonging to one text field.
array | $field | the data from the form (or from import). This will normally have come from the formslib editor element, so it will be an array with keys 'text', 'format' and 'itemid'. However, when we are importing, it will be an array with keys 'text', 'format' and 'files' |
object | $context | the context the question is in. |
string | $component | indentifies the file area question. |
string | $filearea | indentifies the file area questiontext, generalfeedback, answerfeedback, etc. |
int | $itemid | identifies the file area. |
string | the text for this field, after files have been processed. |
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protectedinherited |
Initialise the combined feedback fields.
question_definition | $question | the question_definition we are creating. |
object | $questiondata | the question data loaded from the database. |
bool | $withparts | whether to set the shownumcorrect field. |
Reimplemented in qtype_ddmarker.
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protectedinherited |
Initialise the question metadata.
question_definition | $question | the question_definition we are creating. |
object | $questiondata | the question data loaded from the database. |
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protectedinherited |
Initialise question custom fields.
question_definition | $question | the question_definition we are creating. |
object | $questiondata | the question data loaded from the database. |
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protectedinherited |
Initialise question_definition\answers field.
question_definition | $question | the question_definition we are creating. |
object | $questiondata | the question data loaded from the database. |
bool | $forceplaintextanswers | most qtypes assume that answers are FORMAT_PLAIN, and dont use the answerformat DB column (it contains the default 0 = FORMAT_MOODLE). Therefore, by default this method ingores answerformat. Pass false here to use answerformat. For example multichoice does this. |
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protectedinherited |
Initialise question_definition\hints field.
question_definition | $question | the question_definition we are creating. |
object | $questiondata | the question data loaded from the database. |
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protected |
Initialise the common question_definition fields.
question_definition | $question | the question_definition we are creating. |
object | $questiondata | the question data loaded from the database. |
Reimplemented from question_type.
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protectedinherited |
Returns true is answer with the $key is empty in the question data and should not be saved in DB.
The questions using question_answers table may want to overload this. Default code will work for shortanswer and similar question types.
object | $questiondata | This holds the information from the question editing form or import. |
int | $key | A key of the answer in question. |
bool | True if answer shouldn't be saved in DB. |
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protectedinherited |
Returns true if extra answer fields for answer with the $key is empty in the question data and should not be saved in DB.
Questions where extra answer fields are optional will want to overload this.
object | $questiondata | This holds the information from the question editing form or import. |
int | $key | A key of the answer in question. |
bool | True if extra answer data shouldn't be saved in DB. |
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protectedinherited |
Determine if the hint with specified number is not empty and should be saved.
Overload if you use custom hint controls.
object | $formdata | the data from the form. |
int | $number | number of hint under question. |
bool | $withparts | whether to take into account clearwrong and shownumcorrect options. |
bool | is this particular hint data empty. |
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inherited |
bool | true if this question type sometimes requires manual grading. |
Reimplemented in qtype_essay, and qtype_random.
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inherited |
object | $question | a question of this type. |
string | $otherquestionsinuse | comma-separate list of other question ids in this attempt. |
bool | true if a particular instance of this question requires manual grading. |
Reimplemented in qtype_random.
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inherited |
bool | override this to return false if this is not really a question type, for example the description question type is not really a question type. |
Reimplemented in qtype_description.
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inherited |
bool | true if this question type can be used by the random question type. |
Reimplemented in qtype_description, qtype_missingtype, qtype_random, and qtype_randomsamatch.
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inherited |
string | the name of this question type in the user's language. You should not need to override this method, the default behaviour should be fine. |
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protectedinherited |
Create a question_answer, or an appropriate subclass for this question, from a row loaded from the database.
object | $answer | the DB row from the question_answers table plus extra answer fields. |
question_answer |
Reimplemented in qtype_calculatedmulti, and qtype_multichoice.
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protectedinherited |
Create a question_hint, or an appropriate subclass for this question, from a row loaded from the database.
object | $hint | the DB row from the question hints table. |
question_hint |
Reimplemented in qtype_calculatedmulti, qtype_ddimageortext, qtype_ddmarker, qtype_gapselect_base, qtype_match, qtype_multianswer, qtype_multichoice, and qtype_randomsamatch.
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inherited |
Create an appropriate question_definition for the question of this type using data loaded from the database.
object | $questiondata | the question data loaded from the database. |
question_definition | the corresponding question_definition. |
Reimplemented in qtype_missingtype, and qtype_random.
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protectedinherited |
Create an appropriate question_definition for the question of this type using data loaded from the database.
object | $questiondata | the question data loaded from the database. |
question_definition | an instance of the appropriate question_definition subclass. Still needs to be initialised. |
Reimplemented in qtype_calculatedmulti, and qtype_multichoice.
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inherited |
The name this question should appear as in the create new question dropdown.
Override this method to return false if you don't want your question type to be createable, for example if it is an abstract base type, otherwise, you should not need to override this method.
mixed | the desired string, or false to hide this question type in the menu. |
Reimplemented in qtype_missingtype, and qtype_random.
qtype_shortanswer::move_files | ( | $questionid, | |
$oldcontextid, | |||
$newcontextid ) |
Move all the files belonging to this question from one context to another.
int | $questionid | the question being moved. |
int | $oldcontextid | the context it is moving from. |
int | $newcontextid | the context it is moving to. |
Reimplemented from question_type.
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protectedinherited |
Move all the files belonging to this question's answers when the question is moved from one context to another.
int | $questionid | the question being moved. |
int | $oldcontextid | the context it is moving from. |
int | $newcontextid | the context it is moving to. |
bool | $answerstoo | whether there is an 'answer' question area, as well as an 'answerfeedback' one. Default false. |
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protectedinherited |
Move all the files belonging to this question's answers when the question is moved from one context to another.
int | $questionid | the question being moved. |
int | $oldcontextid | the context it is moving from. |
int | $newcontextid | the context it is moving to. |
bool | $answerstoo | whether there is an 'answer' question area, as well as an 'answerfeedback' one. Default false. |
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protectedinherited |
Move all the files belonging to this question's hints when the question is moved from one context to another.
int | $questionid | the question being moved. |
int | $oldcontextid | the context it is moving from. |
int | $newcontextid | the context it is moving to. |
bool | $answerstoo | whether there is an 'answer' question area, as well as an 'answerfeedback' one. Default false. |
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inherited |
string | the name of this question type. |
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inherited |
string | the URL of the folder this plugin's files live in. |
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inherited |
string | the full path of the folder this plugin's files live in. |
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inherited |
string | the full frankenstyle name for this plugin. |
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inherited |
If the quetsion type uses files in responses, then this method should return an array of all the response variables that might have corresponding files.
For example, the essay qtype returns array('attachments', 'answers').
array | response variable names that may have associated files. |
Reimplemented in qtype_essay.
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protectedinherited |
Can be used to save_question_options() to transfer the combined feedback fields from $formdata to $options.
object | $options | the $question->options object being built. |
object | $formdata | the data from the form. |
object | $context | the context the quetsion is being saved into. |
bool | $withparts | whether $options->shownumcorrect should be set. |
qtype_shortanswer::save_defaults_for_new_questions | ( | stdClass | $fromform | ) |
Save question defaults when creating new questions.
stdClass | $fromform | data from the form. |
Reimplemented from question_type.
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protectedinherited |
Save additional question type data into the hint optional field.
Overload if you use custom hint information.
object | $formdata | the data from the form. |
int | $number | number of hint to get options from. |
bool | $withparts | whether question have parts. |
string | value to save into the options field of question_hints table. |
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inherited |
Saves (creates or updates) a question.
Given some question info and some data about the answers this function parses, organises and saves the question It is used by question.php when saving new data from a form, and also by import.php when importing questions This function in turn calls save_question_options to save question-type specific data.
Whether we are saving a new question or updating an existing one can be determined by testing !empty($question->id). If it is not empty, we are updating.
The question will be saved in category $form->category.
object | $question | the question object which should be updated. For a new question will be mostly empty. |
object | $form | the object containing the information to save, as if from the question editing form. |
object | $course | not really used any more. |
object | On success, return the new question object. On failure, return an object as follows. If the error object has an errors field, display that as an error message. Otherwise, the editing form will be redisplayed with validation errors, from validation_errors field, which is itself an object, shown next to the form fields. (I don't think this is accurate any more.) |
Reimplemented in qtype_calculated, qtype_description, qtype_multianswer, and qtype_random.
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inherited |
Save the answers, with any extra data.
Questions that use answers will call it from save_question_options().
object | $question | This holds the information from the editing form, it is not a standard question object. |
object\$result-,>error | or $result->notice |
qtype_shortanswer::save_question_options | ( | $question | ) |
Saves question-type specific options.
This is called by save_question() to save the question-type specific data
object\$result-,>error | or $result->notice |
object | $question | This holds the information from the editing form, it is not a standard question object. |
Reimplemented from question_type.
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inherited |
Set any missing settings for this question to the default values.
This is called before displaying the question editing form.
object | $questiondata | the question data, loaded from the databsae, or more likely a newly created question object that is only partially initialised. |
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inherited |
Save the default value for a given form element in user_preferences table.
string | $name | the name of the value to set. |
string | $value | the setting value. |
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protectedinherited |