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- Bug fixes for general core bugs in 4.2.x will end 22 April 2024 (12 months).
- Bug fixes for security issues in 4.2.x will end 7 October 2024 (18 months).
- PHP version: minimum PHP 8.0.0 Note: minimum PHP version has increased since Moodle 4.1. PHP 8.1.x is supported too.
/course/format/ -> lib.php (source)
<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* Base class for course format plugins
*
* @package core_course
* @copyright 2012 Marina Glancy
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
defined('MOODLE_INTERNAL') || die;
< /**
< * Returns an instance of format class (extending format_base) for given course
< *
< * @param int|stdClass $courseorid either course id or
< * an object that has the property 'format' and may contain property 'id'
< * @return format_base
< */
< function course_get_format($courseorid) {
< return format_base::instance($courseorid);
< }
<
< /**
< * Base class for course formats
< *
< * Each course format must declare class
< * class format_FORMATNAME extends format_base {}
< * in file lib.php
< *
< * For each course just one instance of this class is created and it will always be returned by
< * course_get_format($courseorid). Format may store it's specific course-dependent options in
< * variables of this class.
< *
< * In rare cases instance of child class may be created just for format without course id
< * i.e. to check if format supports AJAX.
< *
< * Also course formats may extend class section_info and overwrite
< * format_base::build_section_cache() to return more information about sections.
< *
< * If you are upgrading from Moodle 2.3 start with copying the class format_legacy and renaming
< * it to format_FORMATNAME, then move the code from your callback functions into
< * appropriate functions of the class.
< *
< * @package core_course
< * @copyright 2012 Marina Glancy
< * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
< */
< abstract class format_base {
< /** @var int Id of the course in this instance (maybe 0) */
< protected $courseid;
< /** @var string format used for this course. Please note that it can be different from
< * course.format field if course referes to non-existing of disabled format */
< protected $format;
< /** @var stdClass data for course object, please use {@link format_base::get_course()} */
< protected $course = false;
< /** @var array caches format options, please use {@link format_base::get_format_options()} */
< protected $formatoptions = array();
< /** @var array cached instances */
< private static $instances = array();
< /** @var array plugin name => class name. */
< private static $classesforformat = array('site' => 'site');
> use core_courseformat\base as course_format;
> use core_courseformat\output\site_renderer;
/**
< * Creates a new instance of class
< *
< * Please use {@link course_get_format($courseorid)} to get an instance of the format class
< *
< * @param string $format
< * @param int $courseid
< * @return format_base
< */
< protected function __construct($format, $courseid) {
< $this->format = $format;
< $this->courseid = $courseid;
< }
<
< /**
< * Validates that course format exists and enabled and returns either itself or default format
< *
< * @param string $format
< * @return string
< */
< protected static final function get_format_or_default($format) {
< global $CFG;
< require_once($CFG->dirroot . '/course/lib.php');
<
< if (array_key_exists($format, self::$classesforformat)) {
< return self::$classesforformat[$format];
< }
<
< $plugins = get_sorted_course_formats();
< foreach ($plugins as $plugin) {
< self::$classesforformat[$plugin] = $plugin;
< }
<
< if (array_key_exists($format, self::$classesforformat)) {
< return self::$classesforformat[$format];
< }
<
< if (PHPUNIT_TEST && class_exists('format_' . $format)) {
< // Allow unittests to use non-existing course formats.
< return $format;
< }
<
< // Else return default format
< $defaultformat = get_config('moodlecourse', 'format');
< if (!in_array($defaultformat, $plugins)) {
< // when default format is not set correctly, use the first available format
< $defaultformat = reset($plugins);
< }
< debugging('Format plugin format_'.$format.' is not found. Using default format_'.$defaultformat, DEBUG_DEVELOPER);
<
< self::$classesforformat[$format] = $defaultformat;
< return $defaultformat;
< }
<
< /**
< * Get class name for the format
< *
< * If course format xxx does not declare class format_xxx, format_legacy will be returned.
< * This function also includes lib.php file from corresponding format plugin
< *
< * @param string $format
< * @return string
< */
< protected static final function get_class_name($format) {
< global $CFG;
< static $classnames = array('site' => 'format_site');
< if (!isset($classnames[$format])) {
< $plugins = core_component::get_plugin_list('format');
< $usedformat = self::get_format_or_default($format);
< if (isset($plugins[$usedformat]) && file_exists($plugins[$usedformat].'/lib.php')) {
< require_once($plugins[$usedformat].'/lib.php');
< }
< $classnames[$format] = 'format_'. $usedformat;
< if (!class_exists($classnames[$format])) {
< require_once($CFG->dirroot.'/course/format/formatlegacy.php');
< $classnames[$format] = 'format_legacy';
< }
< }
< return $classnames[$format];
< }
<
< /**
< * Returns an instance of the class
< *
< * @todo MDL-35727 use MUC for caching of instances, limit the number of cached instances
> * Returns an instance of format class (extending course_format) for given course
*
* @param int|stdClass $courseorid either course id or
* an object that has the property 'format' and may contain property 'id'
< * @return format_base
< */
< public static final function instance($courseorid) {
< global $DB;
< if (!is_object($courseorid)) {
< $courseid = (int)$courseorid;
< if ($courseid && isset(self::$instances[$courseid]) && count(self::$instances[$courseid]) == 1) {
< $formats = array_keys(self::$instances[$courseid]);
< $format = reset($formats);
< } else {
< $format = $DB->get_field('course', 'format', array('id' => $courseid), MUST_EXIST);
< }
< } else {
< $format = $courseorid->format;
< if (isset($courseorid->id)) {
< $courseid = clean_param($courseorid->id, PARAM_INT);
< } else {
< $courseid = 0;
< }
< }
< // validate that format exists and enabled, use default otherwise
< $format = self::get_format_or_default($format);
< if (!isset(self::$instances[$courseid][$format])) {
< $classname = self::get_class_name($format);
< self::$instances[$courseid][$format] = new $classname($format, $courseid);
< }
< return self::$instances[$courseid][$format];
< }
<
< /**
< * Resets cache for the course (or all caches)
< * To be called from {@link rebuild_course_cache()}
< *
< * @param int $courseid
< */
< public static final function reset_course_cache($courseid = 0) {
< if ($courseid) {
< if (isset(self::$instances[$courseid])) {
< foreach (self::$instances[$courseid] as $format => $object) {
< // in case somebody keeps the reference to course format object
< self::$instances[$courseid][$format]->course = false;
< self::$instances[$courseid][$format]->formatoptions = array();
< }
< unset(self::$instances[$courseid]);
< }
< } else {
< self::$instances = array();
< }
< }
<
< /**
< * Returns the format name used by this course
< *
< * @return string
< */
< public final function get_format() {
< return $this->format;
< }
<
< /**
< * Returns id of the course (0 if course is not specified)
< *
< * @return int
< */
< public final function get_courseid() {
< return $this->courseid;
< }
<
< /**
< * Returns a record from course database table plus additional fields
< * that course format defines
< *
< * @return stdClass
< */
< public function get_course() {
< global $DB;
< if (!$this->courseid) {
< return null;
< }
< if ($this->course === false) {
< $this->course = get_course($this->courseid);
< $options = $this->get_format_options();
< $dbcoursecolumns = null;
< foreach ($options as $optionname => $optionvalue) {
< if (isset($this->course->$optionname)) {
< // Course format options must not have the same names as existing columns in db table "course".
< if (!isset($dbcoursecolumns)) {
< $dbcoursecolumns = $DB->get_columns('course');
< }
< if (isset($dbcoursecolumns[$optionname])) {
< debugging('The option name '.$optionname.' in course format '.$this->format.
< ' is invalid because the field with the same name exists in {course} table',
< DEBUG_DEVELOPER);
< continue;
< }
< }
< $this->course->$optionname = $optionvalue;
< }
< }
< return $this->course;
< }
<
< /**
< * Method used in the rendered and during backup instead of legacy 'numsections'
< *
< * Default renderer will treat sections with sectionnumber greater that the value returned by this
< * method as "orphaned" and not display them on the course page unless in editing mode.
< * Backup will store this value as 'numsections'.
< *
< * This method ensures that 3rd party course format plugins that still use 'numsections' continue to
< * work but at the same time we no longer expect formats to have 'numsections' property.
< *
< * @return int
< */
< public function get_last_section_number() {
< $course = $this->get_course();
< if (isset($course->numsections)) {
< return $course->numsections;
< }
< $modinfo = get_fast_modinfo($course);
< $sections = $modinfo->get_section_info_all();
< return (int)max(array_keys($sections));
< }
<
< /**
< * Method used to get the maximum number of sections for this course format.
< * @return int
< */
< public function get_max_sections() {
< $maxsections = get_config('moodlecourse', 'maxsections');
< if (!isset($maxsections) || !is_numeric($maxsections)) {
< $maxsections = 52;
< }
< return $maxsections;
< }
<
< /**
< * Returns true if the course has a front page.
< *
< * This function is called to determine if the course has a view page, whether or not
< * it contains a listing of activities. It can be useful to set this to false when the course
< * format has only one activity and ignores the course page. Or if there are multiple
< * activities but no page to see the centralised information.
< *
< * Initially this was created to know if forms should add a button to return to the course page.
< * So if 'Return to course' does not make sense in your format your should probably return false.
< *
< * @return boolean
< * @since Moodle 2.6
< */
< public function has_view_page() {
< return true;
< }
<
< /**
< * Returns true if this course format uses sections
< *
< * This function may be called without specifying the course id
< * i.e. in {@link course_format_uses_sections()}
< *
< * Developers, note that if course format does use sections there should be defined a language
< * string with the name 'sectionname' defining what the section relates to in the format, i.e.
< * $string['sectionname'] = 'Topic';
< * or
< * $string['sectionname'] = 'Week';
< *
< * @return bool
< */
< public function uses_sections() {
< return false;
< }
<
< /**
< * Returns a list of sections used in the course
< *
< * This is a shortcut to get_fast_modinfo()->get_section_info_all()
< * @see get_fast_modinfo()
< * @see course_modinfo::get_section_info_all()
< *
< * @return array of section_info objects
< */
< public final function get_sections() {
< if ($course = $this->get_course()) {
< $modinfo = get_fast_modinfo($course);
< return $modinfo->get_section_info_all();
< }
< return array();
< }
<
< /**
< * Returns information about section used in course
< *
< * @param int|stdClass $section either section number (field course_section.section) or row from course_section table
< * @param int $strictness
< * @return section_info
< */
< public final function get_section($section, $strictness = IGNORE_MISSING) {
< if (is_object($section)) {
< $sectionnum = $section->section;
< } else {
< $sectionnum = $section;
< }
< $sections = $this->get_sections();
< if (array_key_exists($sectionnum, $sections)) {
< return $sections[$sectionnum];
< }
< if ($strictness == MUST_EXIST) {
< throw new moodle_exception('sectionnotexist');
< }
< return null;
< }
<
< /**
< * Returns the display name of the given section that the course prefers.
< *
< * @param int|stdClass $section Section object from database or just field course_sections.section
< * @return Display name that the course format prefers, e.g. "Topic 2"
< */
< public function get_section_name($section) {
< if (is_object($section)) {
< $sectionnum = $section->section;
< } else {
< $sectionnum = $section;
< }
<
< if (get_string_manager()->string_exists('sectionname', 'format_' . $this->format)) {
< return get_string('sectionname', 'format_' . $this->format) . ' ' . $sectionnum;
< }
<
< // Return an empty string if there's no available section name string for the given format.
< return '';
< }
<
< /**
< * Returns the default section using format_base's implementation of get_section_name.
< *
< * @param int|stdClass $section Section object from database or just field course_sections section
< * @return string The default value for the section name based on the given course format.
< */
< public function get_default_section_name($section) {
< return self::get_section_name($section);
< }
<
< /**
< * Returns the information about the ajax support in the given source format
< *
< * The returned object's property (boolean)capable indicates that
< * the course format supports Moodle course ajax features.
< *
< * @return stdClass
< */
< public function supports_ajax() {
< // no support by default
< $ajaxsupport = new stdClass();
< $ajaxsupport->capable = false;
< return $ajaxsupport;
< }
<
< /**
< * Custom action after section has been moved in AJAX mode
< *
< * Used in course/rest.php
< *
< * @return array This will be passed in ajax respose
< */
< public function ajax_section_move() {
< return null;
< }
<
< /**
< * The URL to use for the specified course (with section)
< *
< * Please note that course view page /course/view.php?id=COURSEID is hardcoded in many
< * places in core and contributed modules. If course format wants to change the location
< * of the view script, it is not enough to change just this function. Do not forget
< * to add proper redirection.
< *
< * @param int|stdClass $section Section object from database or just field course_sections.section
< * if null the course view page is returned
< * @param array $options options for view URL. At the moment core uses:
< * 'navigation' (bool) if true and section has no separate page, the function returns null
< * 'sr' (int) used by multipage formats to specify to which section to return
< * @return null|moodle_url
< */
< public function get_view_url($section, $options = array()) {
< global $CFG;
< $course = $this->get_course();
< $url = new moodle_url('/course/view.php', array('id' => $course->id));
<
< if (array_key_exists('sr', $options)) {
< $sectionno = $options['sr'];
< } else if (is_object($section)) {
< $sectionno = $section->section;
< } else {
< $sectionno = $section;
< }
< if (empty($CFG->linkcoursesections) && !empty($options['navigation']) && $sectionno !== null) {
< // by default assume that sections are never displayed on separate pages
< return null;
< }
< if ($this->uses_sections() && $sectionno !== null) {
< $url->set_anchor('section-'.$sectionno);
< }
< return $url;
< }
<
< /**
< * Loads all of the course sections into the navigation
< *
< * This method is called from {@link global_navigation::load_course_sections()}
< *
< * By default the method {@link global_navigation::load_generic_course_sections()} is called
< *
< * When overwriting please note that navigationlib relies on using the correct values for
< * arguments $type and $key in {@link navigation_node::add()}
< *
< * Example of code creating a section node:
< * $sectionnode = $node->add($sectionname, $url, navigation_node::TYPE_SECTION, null, $section->id);
< * $sectionnode->nodetype = navigation_node::NODETYPE_BRANCH;
< *
< * Example of code creating an activity node:
< * $activitynode = $sectionnode->add($activityname, $action, navigation_node::TYPE_ACTIVITY, null, $activity->id, $icon);
< * if (global_navigation::module_extends_navigation($activity->modname)) {
< * $activitynode->nodetype = navigation_node::NODETYPE_BRANCH;
< * } else {
< * $activitynode->nodetype = navigation_node::NODETYPE_LEAF;
< * }
< *
< * Also note that if $navigation->includesectionnum is not null, the section with this relative
< * number needs is expected to be loaded
< *
< * @param global_navigation $navigation
< * @param navigation_node $node The course node within the navigation
< */
< public function extend_course_navigation($navigation, navigation_node $node) {
< if ($course = $this->get_course()) {
< $navigation->load_generic_course_sections($course, $node);
< }
< return array();
< }
<
< /**
< * Returns the list of blocks to be automatically added for the newly created course
< *
< * @see blocks_add_default_course_blocks()
< *
< * @return array of default blocks, must contain two keys BLOCK_POS_LEFT and BLOCK_POS_RIGHT
< * each of values is an array of block names (for left and right side columns)
< */
< public function get_default_blocks() {
< global $CFG;
< if (isset($CFG->defaultblocks)) {
< return blocks_parse_default_blocks_list($CFG->defaultblocks);
< }
< $blocknames = array(
< BLOCK_POS_LEFT => array(),
< BLOCK_POS_RIGHT => array()
< );
< return $blocknames;
< }
<
< /**
< * Returns the localised name of this course format plugin
< *
< * @return lang_string
< */
< public final function get_format_name() {
< return new lang_string('pluginname', 'format_'.$this->get_format());
< }
<
< /**
< * Definitions of the additional options that this course format uses for course
< *
< * This function may be called often, it should be as fast as possible.
< * Avoid using get_string() method, use "new lang_string()" instead
< * It is not recommended to use dynamic or course-dependant expressions here
< * This function may be also called when course does not exist yet.
< *
< * Option names must be different from fields in the {course} talbe or any form elements on
< * course edit form, it may even make sence to use special prefix for them.
< *
< * Each option must have the option name as a key and the array of properties as a value:
< * 'default' - default value for this option (assumed null if not specified)
< * 'type' - type of the option value (PARAM_INT, PARAM_RAW, etc.)
< *
< * Additional properties used by default implementation of
< * {@link format_base::create_edit_form_elements()} (calls this method with $foreditform = true)
< * 'label' - localised human-readable label for the edit form
< * 'element_type' - type of the form element, default 'text'
< * 'element_attributes' - additional attributes for the form element, these are 4th and further
< * arguments in the moodleform::addElement() method
< * 'help' - string for help button. Note that if 'help' value is 'myoption' then the string with
< * the name 'myoption_help' must exist in the language file
< * 'help_component' - language component to look for help string, by default this the component
< * for this course format
< *
< * This is an interface for creating simple form elements. If format plugin wants to use other
< * methods such as disableIf, it can be done by overriding create_edit_form_elements().
< *
< * Course format options can be accessed as:
< * $this->get_course()->OPTIONNAME (inside the format class)
< * course_get_format($course)->get_course()->OPTIONNAME (outside of format class)
< *
< * All course options are returned by calling:
< * $this->get_format_options();
< *
< * @param bool $foreditform
< * @return array of options
< */
< public function course_format_options($foreditform = false) {
< return array();
< }
<
< /**
< * Definitions of the additional options that this course format uses for section
< *
< * See {@link format_base::course_format_options()} for return array definition.
< *
< * Additionally section format options may have property 'cache' set to true
< * if this option needs to be cached in {@link get_fast_modinfo()}. The 'cache' property
< * is recommended to be set only for fields used in {@link format_base::get_section_name()},
< * {@link format_base::extend_course_navigation()} and {@link format_base::get_view_url()}
< *
< * For better performance cached options are recommended to have 'cachedefault' property
< * Unlike 'default', 'cachedefault' should be static and not access get_config().
< *
< * Regardless of value of 'cache' all options are accessed in the code as
< * $sectioninfo->OPTIONNAME
< * where $sectioninfo is instance of section_info, returned by
< * get_fast_modinfo($course)->get_section_info($sectionnum)
< * or get_fast_modinfo($course)->get_section_info_all()
< *
< * All format options for particular section are returned by calling:
< * $this->get_format_options($section);
< *
< * @param bool $foreditform
< * @return array
< */
< public function section_format_options($foreditform = false) {
< return array();
< }
<
< /**
< * Returns the format options stored for this course or course section
< *
< * When overriding please note that this function is called from rebuild_course_cache()
< * and section_info object, therefore using of get_fast_modinfo() and/or any function that
< * accesses it may lead to recursion.
< *
< * @param null|int|stdClass|section_info $section if null the course format options will be returned
< * otherwise options for specified section will be returned. This can be either
< * section object or relative section number (field course_sections.section)
< * @return array
< */
< public function get_format_options($section = null) {
< global $DB;
< if ($section === null) {
< $options = $this->course_format_options();
< } else {
< $options = $this->section_format_options();
< }
< if (empty($options)) {
< // there are no option for course/sections anyway, no need to go further
< return array();
< }
< if ($section === null) {
< // course format options will be returned
< $sectionid = 0;
< } else if ($this->courseid && isset($section->id)) {
< // course section format options will be returned
< $sectionid = $section->id;
< } else if ($this->courseid && is_int($section) &&
< ($sectionobj = $DB->get_record('course_sections',
< array('section' => $section, 'course' => $this->courseid), 'id'))) {
< // course section format options will be returned
< $sectionid = $sectionobj->id;
< } else {
< // non-existing (yet) section was passed as an argument
< // default format options for course section will be returned
< $sectionid = -1;
< }
< if (!array_key_exists($sectionid, $this->formatoptions)) {
< $this->formatoptions[$sectionid] = array();
< // first fill with default values
< foreach ($options as $optionname => $optionparams) {
< $this->formatoptions[$sectionid][$optionname] = null;
< if (array_key_exists('default', $optionparams)) {
< $this->formatoptions[$sectionid][$optionname] = $optionparams['default'];
< }
< }
< if ($this->courseid && $sectionid !== -1) {
< // overwrite the default options values with those stored in course_format_options table
< // nothing can be stored if we are interested in generic course ($this->courseid == 0)
< // or generic section ($sectionid === 0)
< $records = $DB->get_records('course_format_options',
< array('courseid' => $this->courseid,
< 'format' => $this->format,
< 'sectionid' => $sectionid
< ), '', 'id,name,value');
<
< $indexedrecords = [];
< foreach ($records as $record) {
< $indexedrecords[$record->name] = $record->value;
< }
< foreach ($options as $optionname => $option) {
< contract_value($this->formatoptions[$sectionid], $indexedrecords, $option, $optionname);
< }
< }
< }
< return $this->formatoptions[$sectionid];
< }
<
< /**
< * Adds format options elements to the course/section edit form
< *
< * This function is called from {@link course_edit_form::definition_after_data()}
< *
< * @param MoodleQuickForm $mform form the elements are added to
< * @param bool $forsection 'true' if this is a section edit form, 'false' if this is course edit form
< * @return array array of references to the added form elements
< */
< public function create_edit_form_elements(&$mform, $forsection = false) {
< $elements = array();
< if ($forsection) {
< $options = $this->section_format_options(true);
< } else {
< $options = $this->course_format_options(true);
< }
< foreach ($options as $optionname => $option) {
< if (!isset($option['element_type'])) {
< $option['element_type'] = 'text';
< }
< $args = array($option['element_type'], $optionname, $option['label']);
< if (!empty($option['element_attributes'])) {
< $args = array_merge($args, $option['element_attributes']);
< }
< $elements[] = call_user_func_array(array($mform, 'addElement'), $args);
< if (isset($option['help'])) {
< $helpcomponent = 'format_'. $this->get_format();
< if (isset($option['help_component'])) {
< $helpcomponent = $option['help_component'];
< }
< $mform->addHelpButton($optionname, $option['help'], $helpcomponent);
< }
< if (isset($option['type'])) {
< $mform->setType($optionname, $option['type']);
< }
< if (isset($option['default']) && !array_key_exists($optionname, $mform->_defaultValues)) {
< // Set defaults for the elements in the form.
< // Since we call this method after set_data() make sure that we don't override what was already set.
< $mform->setDefault($optionname, $option['default']);
< }
< }
<
< if (!$forsection && empty($this->courseid)) {
< // Check if course end date form field should be enabled by default.
< // If a default date is provided to the form element, it is magically enabled by default in the
< // MoodleQuickForm_date_time_selector class, otherwise it's disabled by default.
< if (get_config('moodlecourse', 'courseenddateenabled')) {
< // At this stage (this is called from definition_after_data) course data is already set as default.
< // We can not overwrite what is in the database.
< $mform->setDefault('enddate', $this->get_default_course_enddate($mform));
< }
< }
<
< return $elements;
< }
<
< /**
< * Override if you need to perform some extra validation of the format options
< *
< * @param array $data array of ("fieldname"=>value) of submitted data
< * @param array $files array of uploaded files "element_name"=>tmp_file_path
< * @param array $errors errors already discovered in edit form validation
< * @return array of "element_name"=>"error_description" if there are errors,
< * or an empty array if everything is OK.
< * Do not repeat errors from $errors param here
< */
< public function edit_form_validation($data, $files, $errors) {
< return array();
< }
<
< /**
< * Prepares values of course or section format options before storing them in DB
< *
< * If an option has invalid value it is not returned
< *
< * @param array $rawdata associative array of the proposed course/section format options
< * @param int|null $sectionid null if it is course format option
< * @return array array of options that have valid values
< */
< protected function validate_format_options(array $rawdata, int $sectionid = null) : array {
< if (!$sectionid) {
< $allformatoptions = $this->course_format_options(true);
< } else {
< $allformatoptions = $this->section_format_options(true);
< }
< $data = array_intersect_key($rawdata, $allformatoptions);
< foreach ($data as $key => $value) {
< $option = $allformatoptions[$key] + ['type' => PARAM_RAW, 'element_type' => null, 'element_attributes' => [[]]];
< expand_value($data, $data, $option, $key);
< if ($option['element_type'] === 'select' && !array_key_exists($data[$key], $option['element_attributes'][0])) {
< // Value invalid for select element, skip.
< unset($data[$key]);
< }
< }
< return $data;
< }
<
< /**
< * Validates format options for the course
< *
< * @param array $data data to insert/update
< * @return array array of options that have valid values
< */
< public function validate_course_format_options(array $data) : array {
< return $this->validate_format_options($data);
< }
<
< /**
< * Updates format options for a course or section
< *
< * If $data does not contain property with the option name, the option will not be updated
< *
< * @param stdClass|array $data return value from {@link moodleform::get_data()} or array with data
< * @param null|int null if these are options for course or section id (course_sections.id)
< * if these are options for section
< * @return bool whether there were any changes to the options values
< */
< protected function update_format_options($data, $sectionid = null) {
< global $DB;
< $data = $this->validate_format_options((array)$data, $sectionid);
< if (!$sectionid) {
< $allformatoptions = $this->course_format_options();
< $sectionid = 0;
< } else {
< $allformatoptions = $this->section_format_options();
< }
< if (empty($allformatoptions)) {
< // nothing to update anyway
< return false;
< }
< $defaultoptions = array();
< $cached = array();
< foreach ($allformatoptions as $key => $option) {
< $defaultoptions[$key] = null;
< if (array_key_exists('default', $option)) {
< $defaultoptions[$key] = $option['default'];
< }
< expand_value($defaultoptions, $defaultoptions, $option, $key);
< $cached[$key] = ($sectionid === 0 || !empty($option['cache']));
< }
< $records = $DB->get_records('course_format_options',
< array('courseid' => $this->courseid,
< 'format' => $this->format,
< 'sectionid' => $sectionid
< ), '', 'name,id,value');
< $changed = $needrebuild = false;
< foreach ($defaultoptions as $key => $value) {
< if (isset($records[$key])) {
< if (array_key_exists($key, $data) && $records[$key]->value !== $data[$key]) {
< $DB->set_field('course_format_options', 'value',
< $data[$key], array('id' => $records[$key]->id));
< $changed = true;
< $needrebuild = $needrebuild || $cached[$key];
< }
< } else {
< if (array_key_exists($key, $data) && $data[$key] !== $value) {
< $newvalue = $data[$key];
< $changed = true;
< $needrebuild = $needrebuild || $cached[$key];
< } else {
< $newvalue = $value;
< // we still insert entry in DB but there are no changes from user point of
< // view and no need to call rebuild_course_cache()
< }
< $DB->insert_record('course_format_options', array(
< 'courseid' => $this->courseid,
< 'format' => $this->format,
< 'sectionid' => $sectionid,
< 'name' => $key,
< 'value' => $newvalue
< ));
< }
< }
< if ($needrebuild) {
< rebuild_course_cache($this->courseid, true);
< }
< if ($changed) {
< // reset internal caches
< if (!$sectionid) {
< $this->course = false;
< }
< unset($this->formatoptions[$sectionid]);
< }
< return $changed;
< }
<
< /**
< * Updates format options for a course
< *
< * If $data does not contain property with the option name, the option will not be updated
< *
< * @param stdClass|array $data return value from {@link moodleform::get_data()} or array with data
< * @param stdClass $oldcourse if this function is called from {@link update_course()}
< * this object contains information about the course before update
< * @return bool whether there were any changes to the options values
< */
< public function update_course_format_options($data, $oldcourse = null) {
< return $this->update_format_options($data);
< }
<
< /**
< * Updates format options for a section
< *
< * Section id is expected in $data->id (or $data['id'])
< * If $data does not contain property with the option name, the option will not be updated
< *
< * @param stdClass|array $data return value from {@link moodleform::get_data()} or array with data
< * @return bool whether there were any changes to the options values
< */
< public function update_section_format_options($data) {
< $data = (array)$data;
< return $this->update_format_options($data, $data['id']);
< }
<
< /**
< * Return an instance of moodleform to edit a specified section
< *
< * Default implementation returns instance of editsection_form that automatically adds
< * additional fields defined in {@link format_base::section_format_options()}
< *
< * Format plugins may extend editsection_form if they want to have custom edit section form.
< *
< * @param mixed $action the action attribute for the form. If empty defaults to auto detect the
< * current url. If a moodle_url object then outputs params as hidden variables.
< * @param array $customdata the array with custom data to be passed to the form
< * /course/editsection.php passes section_info object in 'cs' field
< * for filling availability fields
< * @return moodleform
< */
< public function editsection_form($action, $customdata = array()) {
< global $CFG;
< require_once($CFG->dirroot. '/course/editsection_form.php');
< $context = context_course::instance($this->courseid);
< if (!array_key_exists('course', $customdata)) {
< $customdata['course'] = $this->get_course();
< }
< return new editsection_form($action, $customdata);
< }
<
< /**
< * Allows course format to execute code on moodle_page::set_course()
< *
< * @param moodle_page $page instance of page calling set_course
< */
< public function page_set_course(moodle_page $page) {
< }
<
< /**
< * Allows course format to execute code on moodle_page::set_cm()
< *
< * Current module can be accessed as $page->cm (returns instance of cm_info)
< *
< * @param moodle_page $page instance of page calling set_cm
< */
< public function page_set_cm(moodle_page $page) {
< }
<
< /**
< * Course-specific information to be output on any course page (usually above navigation bar)
< *
< * Example of usage:
< * define
< * class format_FORMATNAME_XXX implements renderable {}
< *
< * create format renderer in course/format/FORMATNAME/renderer.php, define rendering function:
< * class format_FORMATNAME_renderer extends plugin_renderer_base {
< * protected function render_format_FORMATNAME_XXX(format_FORMATNAME_XXX $xxx) {
< * return html_writer::tag('div', 'This is my header/footer');
< * }
< * }
< *
< * Return instance of format_FORMATNAME_XXX in this function, the appropriate method from
< * plugin renderer will be called
< *
< * @return null|renderable null for no output or object with data for plugin renderer
< */
< public function course_header() {
< return null;
< }
<
< /**
< * Course-specific information to be output on any course page (usually in the beginning of
< * standard footer)
< *
< * See {@link format_base::course_header()} for usage
< *
< * @return null|renderable null for no output or object with data for plugin renderer
< */
< public function course_footer() {
< return null;
< }
<
< /**
< * Course-specific information to be output immediately above content on any course page
< *
< * See {@link format_base::course_header()} for usage
< *
< * @return null|renderable null for no output or object with data for plugin renderer
< */
< public function course_content_header() {
< return null;
< }
<
< /**
< * Course-specific information to be output immediately below content on any course page
< *
< * See {@link format_base::course_header()} for usage
< *
< * @return null|renderable null for no output or object with data for plugin renderer
< */
< public function course_content_footer() {
< return null;
< }
<
< /**
< * Returns instance of page renderer used by this plugin
< *
< * @param moodle_page $page
< * @return renderer_base
< */
< public function get_renderer(moodle_page $page) {
< return $page->get_renderer('format_'. $this->get_format());
< }
<
< /**
< * Returns true if the specified section is current
< *
< * By default we analyze $course->marker
< *
< * @param int|stdClass|section_info $section
< * @return bool
< */
< public function is_section_current($section) {
< if (is_object($section)) {
< $sectionnum = $section->section;
< } else {
< $sectionnum = $section;
< }
< return ($sectionnum && ($course = $this->get_course()) && $course->marker == $sectionnum);
< }
<
< /**
< * Allows to specify for modinfo that section is not available even when it is visible and conditionally available.
< *
< * Note: affected user can be retrieved as: $section->modinfo->userid
< *
< * Course format plugins can override the method to change the properties $available and $availableinfo that were
< * calculated by conditional availability.
< * To make section unavailable set:
< * $available = false;
< * To make unavailable section completely hidden set:
< * $availableinfo = '';
< * To make unavailable section visible with availability message set:
< * $availableinfo = get_string('sectionhidden', 'format_xxx');
< *
< * @param section_info $section
< * @param bool $available the 'available' propery of the section_info as it was evaluated by conditional availability.
< * Can be changed by the method but 'false' can not be overridden by 'true'.
< * @param string $availableinfo the 'availableinfo' propery of the section_info as it was evaluated by conditional availability.
< * Can be changed by the method
< */
< public function section_get_available_hook(section_info $section, &$available, &$availableinfo) {
< }
<
< /**
< * Whether this format allows to delete sections
< *
< * If format supports deleting sections it is also recommended to define language string
< * 'deletesection' inside the format.
< *
< * Do not call this function directly, instead use {@link course_can_delete_section()}
< *
< * @param int|stdClass|section_info $section
< * @return bool
< */
< public function can_delete_section($section) {
< return false;
< }
<
< /**
< * Deletes a section
< *
< * Do not call this function directly, instead call {@link course_delete_section()}
< *
< * @param int|stdClass|section_info $section
< * @param bool $forcedeleteifnotempty if set to false section will not be deleted if it has modules in it.
< * @return bool whether section was deleted
< */
< public function delete_section($section, $forcedeleteifnotempty = false) {
< global $DB;
< if (!$this->uses_sections()) {
< // Not possible to delete section if sections are not used.
< return false;
< }
< if (!is_object($section)) {
< $section = $DB->get_record('course_sections', array('course' => $this->get_courseid(), 'section' => $section),
< 'id,section,sequence,summary');
< }
< if (!$section || !$section->section) {
< // Not possible to delete 0-section.
< return false;
< }
<
< if (!$forcedeleteifnotempty && (!empty($section->sequence) || !empty($section->summary))) {
< return false;
< }
<
< $course = $this->get_course();
<
< // Remove the marker if it points to this section.
< if ($section->section == $course->marker) {
< course_set_marker($course->id, 0);
< }
<
< $lastsection = $DB->get_field_sql('SELECT max(section) from {course_sections}
< WHERE course = ?', array($course->id));
<
< // Find out if we need to descrease the 'numsections' property later.
< $courseformathasnumsections = array_key_exists('numsections',
< $this->get_format_options());
< $decreasenumsections = $courseformathasnumsections && ($section->section <= $course->numsections);
<
< // Move the section to the end.
< move_section_to($course, $section->section, $lastsection, true);
<
< // Delete all modules from the section.
< foreach (preg_split('/,/', $section->sequence, -1, PREG_SPLIT_NO_EMPTY) as $cmid) {
< course_delete_module($cmid);
< }
<
< // Delete section and it's format options.
< $DB->delete_records('course_format_options', array('sectionid' => $section->id));
< $DB->delete_records('course_sections', array('id' => $section->id));
< rebuild_course_cache($course->id, true);
<
< // Delete section summary files.
< $context = \context_course::instance($course->id);
< $fs = get_file_storage();
< $fs->delete_area_files($context->id, 'course', 'section', $section->id);
<
< // Descrease 'numsections' if needed.
< if ($decreasenumsections) {
< $this->update_course_format_options(array('numsections' => $course->numsections - 1));
< }
<
< return true;
< }
<
< /**
< * Prepares the templateable object to display section name
< *
< * @param \section_info|\stdClass $section
< * @param bool $linkifneeded
< * @param bool $editable
< * @param null|lang_string|string $edithint
< * @param null|lang_string|string $editlabel
< * @return \core\output\inplace_editable
< */
< public function inplace_editable_render_section_name($section, $linkifneeded = true,
< $editable = null, $edithint = null, $editlabel = null) {
< global $USER, $CFG;
< require_once($CFG->dirroot.'/course/lib.php');
<
< if ($editable === null) {
< $editable = !empty($USER->editing) && has_capability('moodle/course:update',
< context_course::instance($section->course));
< }
<
< $displayvalue = $title = get_section_name($section->course, $section);
< if ($linkifneeded) {
< // Display link under the section name if the course format setting is to display one section per page.
< $url = course_get_url($section->course, $section->section, array('navigation' => true));
< if ($url) {
< $displayvalue = html_writer::link($url, $title);
< }
< $itemtype = 'sectionname';
< } else {
< // If $linkifneeded==false, we never display the link (this is used when rendering the section header).
< // Itemtype 'sectionnamenl' (nl=no link) will tell the callback that link should not be rendered -
< // there is no other way callback can know where we display the section name.
< $itemtype = 'sectionnamenl';
< }
< if (empty($edithint)) {
< $edithint = new lang_string('editsectionname');
< }
< if (empty($editlabel)) {
< $editlabel = new lang_string('newsectionname', '', $title);
< }
<
< return new \core\output\inplace_editable('format_' . $this->format, $itemtype, $section->id, $editable,
< $displayvalue, $section->name, $edithint, $editlabel);
< }
<
< /**
< * Updates the value in the database and modifies this object respectively.
< *
< * ALWAYS check user permissions before performing an update! Throw exceptions if permissions are not sufficient
< * or value is not legit.
< *
< * @param stdClass $section
< * @param string $itemtype
< * @param mixed $newvalue
< * @return \core\output\inplace_editable
< */
< public function inplace_editable_update_section_name($section, $itemtype, $newvalue) {
< if ($itemtype === 'sectionname' || $itemtype === 'sectionnamenl') {
< $context = context_course::instance($section->course);
< external_api::validate_context($context);
< require_capability('moodle/course:update', $context);
<
< $newtitle = clean_param($newvalue, PARAM_TEXT);
< if (strval($section->name) !== strval($newtitle)) {
< course_update_section($section->course, $section, array('name' => $newtitle));
< }
< return $this->inplace_editable_render_section_name($section, ($itemtype === 'sectionname'), true);
< }
< }
<
<
< /**
< * Returns the default end date value based on the start date.
< *
< * This is the default implementation for course formats, it is based on
< * moodlecourse/courseduration setting. Course formats like format_weeks for
< * example can overwrite this method and return a value based on their internal options.
< *
< * @param moodleform $mform
< * @param array $fieldnames The form - field names mapping.
< * @return int
< */
< public function get_default_course_enddate($mform, $fieldnames = array()) {
<
< if (empty($fieldnames)) {
< $fieldnames = array('startdate' => 'startdate');
< }
<
< $startdate = $this->get_form_start_date($mform, $fieldnames);
< $courseduration = intval(get_config('moodlecourse', 'courseduration'));
< if (!$courseduration) {
< // Default, it should be already set during upgrade though.
< $courseduration = YEARSECS;
< }
<
< return $startdate + $courseduration;
< }
<
< /**
< * Indicates whether the course format supports the creation of the Announcements forum.
< *
< * For course format plugin developers, please override this to return true if you want the Announcements forum
< * to be created upon course creation.
< *
< * @return bool
< */
< public function supports_news() {
< // For backwards compatibility, check if default blocks include the news_items block.
< $defaultblocks = $this->get_default_blocks();
< foreach ($defaultblocks as $blocks) {
< if (in_array('news_items', $blocks)) {
< return true;
< }
< }
< // Return false by default.
< return false;
< }
<
< /**
< * Get the start date value from the course settings page form.
< *
< * @param moodleform $mform
< * @param array $fieldnames The form - field names mapping.
< * @return int
< */
< protected function get_form_start_date($mform, $fieldnames) {
< $startdate = $mform->getElementValue($fieldnames['startdate']);
< return $mform->getElement($fieldnames['startdate'])->exportValue($startdate);
< }
<
< /**
< * Returns whether this course format allows the activity to
< * have "triple visibility state" - visible always, hidden on course page but available, hidden.
< *
< * @param stdClass|cm_info $cm course module (may be null if we are displaying a form for adding a module)
< * @param stdClass|section_info $section section where this module is located or will be added to
< * @return bool
< */
< public function allow_stealth_module_visibility($cm, $section) {
< return false;
< }
<
< /**
< * Callback used in WS core_course_edit_section when teacher performs an AJAX action on a section (show/hide)
< *
< * Access to the course is already validated in the WS but the callback has to make sure
< * that particular action is allowed by checking capabilities
< *
< * Course formats should register
< *
< * @param stdClass|section_info $section
< * @param string $action
< * @param int $sr
< * @return null|array|stdClass any data for the Javascript post-processor (must be json-encodeable)
< */
< public function section_action($section, $action, $sr) {
< global $PAGE;
< if (!$this->uses_sections() || !$section->section) {
< // No section actions are allowed if course format does not support sections.
< // No actions are allowed on the 0-section by default (overwrite in course format if needed).
< throw new moodle_exception('sectionactionnotsupported', 'core', null, s($action));
< }
<
< $course = $this->get_course();
< $coursecontext = context_course::instance($course->id);
< switch($action) {
< case 'hide':
< case 'show':
< require_capability('moodle/course:sectionvisibility', $coursecontext);
< $visible = ($action === 'hide') ? 0 : 1;
< course_update_section($course, $section, array('visible' => $visible));
< break;
< default:
< throw new moodle_exception('sectionactionnotsupported', 'core', null, s($action));
< }
<
< $modules = [];
<
< $modinfo = get_fast_modinfo($course);
< $coursesections = $modinfo->sections;
< if (array_key_exists($section->section, $coursesections)) {
< $courserenderer = $PAGE->get_renderer('core', 'course');
< $completioninfo = new completion_info($course);
< foreach ($coursesections[$section->section] as $cmid) {
< $cm = $modinfo->get_cm($cmid);
< $modules[] = $courserenderer->course_section_cm_list_item($course, $completioninfo, $cm, $sr);
< }
< }
<
< return ['modules' => $modules];
< }
<
< /**
< * Return the plugin config settings for external functions,
< * in some cases the configs will need formatting or be returned only if the current user has some capabilities enabled.
< *
< * @return array the list of configs
< * @since Moodle 3.5
> * @return course_format
*/
< public function get_config_for_external() {
< return array();
< }
> function course_get_format($courseorid) {
> return course_format::instance($courseorid);
}
/**
* Pseudo course format used for the site main page
*
* @package core_course
* @copyright 2012 Marina Glancy
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
< class format_site extends format_base {
> class format_site extends course_format {
/**
* Returns the display name of the given section that the course prefers.
*
* @param int|stdClass $section Section object from database or just field section.section
* @return Display name that the course format prefers, e.g. "Topic 2"
*/
function get_section_name($section) {
> $section = $this->get_section($section);
return get_string('site');
> if ((string)$section->name !== '') {
}
> // Return the name the user set.
> return format_string($section->name, true, array('context' => context_course::instance($this->courseid)));
/**
> } else {
* For this fake course referring to the whole site, the site homepage is always returned
> }
* regardless of arguments
*
* @param int|stdClass $section
* @param array $options
* @return null|moodle_url
*/
public function get_view_url($section, $options = array()) {
return new moodle_url('/', array('redirect' => 0));
}
/**
* Returns the list of blocks to be automatically added on the site frontpage when moodle is installed
*
* @return array of default blocks, must contain two keys BLOCK_POS_LEFT and BLOCK_POS_RIGHT
* each of values is an array of block names (for left and right side columns)
*/
public function get_default_blocks() {
return blocks_get_default_site_course_blocks();
}
/**
* Definitions of the additional options that site uses
*
* @param bool $foreditform
* @return array of options
*/
public function course_format_options($foreditform = false) {
static $courseformatoptions = false;
if ($courseformatoptions === false) {
$courseformatoptions = array(
'numsections' => array(
'default' => 1,
'type' => PARAM_INT,
),
);
}
return $courseformatoptions;
}
/**
* Returns whether this course format allows the activity to
* have "triple visibility state" - visible always, hidden on course page but available, hidden.
*
* @param stdClass|cm_info $cm course module (may be null if we are displaying a form for adding a module)
* @param stdClass|section_info $section section where this module is located or will be added to
* @return bool
*/
public function allow_stealth_module_visibility($cm, $section) {
return true;
}
>
}
> /**
> * Returns instance of page renderer used by the site page
/**
> *
* 'Converts' a value from what is stored in the database into what is used by edit forms.
> * @param moodle_page $page the current page
*
> * @return renderer_base
* @param array $dest The destination array
> */
* @param array $source The source array
> public function get_renderer(moodle_page $page) {
* @param array $option The definition structure of the option.
> return new site_renderer($page, null);
* @param string $optionname The name of the option, as provided in the definition.
> }
* @author Jason den Dulk
>
*/
> /**
function contract_value(array &$dest, array $source, array $option, string $optionname) : void {
> * Site format uses only section 1.
if (substr($optionname, -7) == '_editor') { // Suffix '_editor' indicates that the element is an editor.
> *
$name = substr($optionname, 0, -7);
> * @return int
if (isset($source[$name])) {
> */
$dest[$optionname] = [
> public function get_section_number(): int {
'text' => clean_param_if_not_null($source[$name], $option['type'] ?? PARAM_RAW),
> return 1;
'format' => clean_param_if_not_null($source[$name . 'format'], PARAM_INT),
> }
< * @author Jason den Dulk
}
} else {
if (isset($source[$optionname])) {
$dest[$optionname] = clean_param_if_not_null($source[$optionname], $option['type'] ?? PARAM_RAW);
}
}
}
/**
* Cleans the given param, unless it is null.
*
* @param mixed $param The variable we are cleaning.
* @param string $type Expected format of param after cleaning.
* @return mixed Null if $param is null, otherwise the cleaned value.
* @throws coding_exception
< * @author Jason den Dulk
*/
function clean_param_if_not_null($param, string $type = PARAM_RAW) {
if ($param === null) {
return null;
} else {
return clean_param($param, $type);
}
}
/**
* 'Converts' a value from what is used in edit forms into a value(s) to be stored in the database.
*
* @param array $dest The destination array
* @param array $source The source array
* @param array $option The definition structure of the option.
* @param string $optionname The name of the option, as provided in the definition.
< * @author Jason den Dulk
*/
function expand_value(array &$dest, array $source, array $option, string $optionname) : void {
if (substr($optionname, -7) == '_editor') { // Suffix '_editor' indicates that the element is an editor.
$name = substr($optionname, 0, -7);
if (is_string($source[$optionname])) {
$dest[$name] = clean_param($source[$optionname], $option['type'] ?? PARAM_RAW);
$dest[$name.'format'] = 1;
} else {
$dest[$name] = clean_param($source[$optionname]['text'], $option['type'] ?? PARAM_RAW);
$dest[$name.'format'] = clean_param($source[$optionname]['format'], PARAM_INT);
}
unset($dest[$optionname]);
} else {
$dest[$optionname] = clean_param($source[$optionname], $option['type'] ?? PARAM_RAW);
}
> }
}
>
> /**
> * Course-module fragment renderer method.
> *
> * The fragment arguments are id and sr (section return).
> *
> * @param array $args The fragment arguments.
> * @return string The rendered cm item.
> *
> * @throws require_login_exception
> */
> function core_courseformat_output_fragment_cmitem($args): string {
> global $PAGE;
>
> [$course, $cm] = get_course_and_cm_from_cmid($args['id']);
> if (!can_access_course($course, null, '', true) || !$cm->uservisible) {
> throw new require_login_exception('Activity is not available');
> }
>
> $format = course_get_format($course);
> if (!empty($args['sr'])) {
> $format->set_section_number($args['sr']);
> }
> $renderer = $format->get_renderer($PAGE);
> $section = $cm->get_section_info();
> return $renderer->course_section_updated_cm_item($format, $section, $cm);
> }
>
> /**
> * Section fragment renderer method.
> *
> * The fragment arguments are courseid, section id and sr (section return).
> *
> * @param array $args The fragment arguments.
> * @return string The rendered section.
> *
> * @throws require_login_exception
> */
> function core_courseformat_output_fragment_section($args): string {
> global $PAGE;
>
> $course = get_course($args['courseid']);
> if (!can_access_course($course, null, '', true)) {
> throw new require_login_exception('Course is not available');
> }
>
> $format = course_get_format($course);
> if (!empty($args['sr'])) {
> $format->set_section_number($args['sr']);
> }
>
> $modinfo = $format->get_modinfo();
> $section = $modinfo->get_section_info_by_id($args['id'], MUST_EXIST);
> if (!$section->uservisible) {
> throw new require_login_exception('Section is not available');
> }
>
> $renderer = $format->get_renderer($PAGE);
> return $renderer->course_section_updated($format, $section);
