PHP course_overviewfiles_options函数代码示例

/**
 * Update a course.
 *
 * Please note this functions does not verify any access control,
 * the calling code is responsible for all validation (usually it is the form definition).
 *
 * @param object $data  - all the data needed for an entry in the 'course' table
 * @param array $editoroptions course description editor options
 * @return void
 */
function update_course($data, $editoroptions = NULL)
{
    global $DB;
    $data->timemodified = time();
    $oldcourse = course_get_format($data->id)->get_course();
    $context = context_course::instance($oldcourse->id);
    if ($editoroptions) {
        $data = file_postupdate_standard_editor($data, 'summary', $editoroptions, $context, 'course', 'summary', 0);
    }
    if ($overviewfilesoptions = course_overviewfiles_options($data->id)) {
        $data = file_postupdate_standard_filemanager($data, 'overviewfiles', $overviewfilesoptions, $context, 'course', 'overviewfiles', 0);
    }
    // Check we don't have a duplicate shortname.
    if (!empty($data->shortname) && $oldcourse->shortname != $data->shortname) {
        if ($DB->record_exists_sql('SELECT id from {course} WHERE shortname = ? AND id <> ?', array($data->shortname, $data->id))) {
            throw new moodle_exception('shortnametaken', '', '', $data->shortname);
        }
    }
    // Check we don't have a duplicate idnumber.
    if (!empty($data->idnumber) && $oldcourse->idnumber != $data->idnumber) {
        if ($DB->record_exists_sql('SELECT id from {course} WHERE idnumber = ? AND id <> ?', array($data->idnumber, $data->id))) {
            throw new moodle_exception('courseidnumbertaken', '', '', $data->idnumber);
        }
    }
    if (!isset($data->category) or empty($data->category)) {
        // prevent nulls and 0 in category field
        unset($data->category);
    }
    $changesincoursecat = $movecat = (isset($data->category) and $oldcourse->category != $data->category);
    if (!isset($data->visible)) {
        // data not from form, add missing visibility info
        $data->visible = $oldcourse->visible;
    }
    if ($data->visible != $oldcourse->visible) {
        // reset the visibleold flag when manually hiding/unhiding course
        $data->visibleold = $data->visible;
        $changesincoursecat = true;
    } else {
        if ($movecat) {
            $newcategory = $DB->get_record('course_categories', array('id' => $data->category));
            if (empty($newcategory->visible)) {
                // make sure when moving into hidden category the course is hidden automatically
                $data->visible = 0;
            }
        }
    }
    // Update with the new data
    $DB->update_record('course', $data);
    // make sure the modinfo cache is reset
    rebuild_course_cache($data->id);
    // update course format options with full course data
    course_get_format($data->id)->update_course_format_options($data, $oldcourse);
    $course = $DB->get_record('course', array('id' => $data->id));
    if ($movecat) {
        $newparent = context_coursecat::instance($course->category);
        $context->update_moved($newparent);
    }
    $fixcoursesortorder = $movecat || isset($data->sortorder) && $oldcourse->sortorder != $data->sortorder;
    if ($fixcoursesortorder) {
        fix_course_sortorder();
    }
    // purge appropriate caches in case fix_course_sortorder() did not change anything
    cache_helper::purge_by_event('changesincourse');
    if ($changesincoursecat) {
        cache_helper::purge_by_event('changesincoursecat');
    }
    // Test for and remove blocks which aren't appropriate anymore
    blocks_remove_inappropriate($course);
    // Save any custom role names.
    save_local_role_names($course->id, $data);
    // update enrol settings
    enrol_course_updated(false, $course, $data);
    // Trigger a course updated event.
    $event = \core\event\course_updated::create(array('objectid' => $course->id, 'context' => context_course::instance($course->id), 'other' => array('shortname' => $course->shortname, 'fullname' => $course->fullname)));
    $event->set_legacy_logdata(array($course->id, 'course', 'update', 'edit.php?id=' . $course->id, $course->id));
    $event->trigger();
    if ($oldcourse->format !== $course->format) {
        // Remove all options stored for the previous format
        // We assume that new course format migrated everything it needed watching trigger
        // 'course_updated' and in method format_XXX::update_course_format_options()
        $DB->delete_records('course_format_options', array('courseid' => $course->id, 'format' => $oldcourse->format));
    }
}

 /**
  * Returns all course overview files
  *
  * @return array array of stored_file objects
  */
 public function get_course_overviewfiles()
 {
     global $CFG;
     if (empty($CFG->courseoverviewfileslimit)) {
         return array();
     }
     require_once $CFG->libdir . '/filestorage/file_storage.php';
     require_once $CFG->dirroot . '/course/lib.php';
     $fs = get_file_storage();
     $context = context_course::instance($this->id);
     $files = $fs->get_area_files($context->id, 'course', 'overviewfiles', false, 'filename', false);
     if (count($files)) {
         $overviewfilesoptions = course_overviewfiles_options($this->id);
         $acceptedtypes = $overviewfilesoptions['accepted_types'];
         if ($acceptedtypes !== '*') {
             // Filter only files with allowed extensions.
             require_once $CFG->libdir . '/filelib.php';
             foreach ($files as $key => $file) {
                 if (!file_extension_in_typegroup($file->get_filename(), $acceptedtypes)) {
                     unset($files[$key]);
                 }
             }
         }
         if (count($files) > $CFG->courseoverviewfileslimit) {
             // Return no more than $CFG->courseoverviewfileslimit files.
             $files = array_slice($files, 0, $CFG->courseoverviewfileslimit, true);
         }
     }
     return $files;
 }

//.........这里部分代码省略.........
         }
     }
     $choices = array();
     $choices['0'] = get_string('hide');
     $choices['1'] = get_string('show');
     $mform->addElement('select', 'visible', get_string('visible'), $choices);
     $mform->addHelpButton('visible', 'visible');
     $mform->setDefault('visible', $courseconfig->visible);
     if (!has_capability('moodle/course:visibility', $context)) {
         $mform->hardFreeze('visible');
         if (!empty($course->id)) {
             $mform->setConstant('visible', $course->visible);
         } else {
             $mform->setConstant('visible', $courseconfig->visible);
         }
     }
     $mform->addElement('date_selector', 'startdate', get_string('startdate'));
     $mform->addHelpButton('startdate', 'startdate');
     $mform->setDefault('startdate', time() + 3600 * 24);
     $mform->addElement('text', 'idnumber', get_string('idnumbercourse'), 'maxlength="100"  size="10"');
     $mform->addHelpButton('idnumber', 'idnumbercourse');
     $mform->setType('idnumber', PARAM_RAW);
     if (!empty($course->id) and !has_capability('moodle/course:changeidnumber', $coursecontext)) {
         $mform->hardFreeze('idnumber');
         $mform->setConstants('idnumber', $course->idnumber);
     }
     // Description.
     $mform->addElement('header', 'descriptionhdr', get_string('description'));
     $mform->setExpanded('descriptionhdr');
     $mform->addElement('editor', 'summary_editor', get_string('coursesummary'), null, $editoroptions);
     $mform->addHelpButton('summary_editor', 'coursesummary');
     $mform->setType('summary_editor', PARAM_RAW);
     $summaryfields = 'summary_editor';
     if ($overviewfilesoptions = course_overviewfiles_options($course)) {
         $mform->addElement('filemanager', 'overviewfiles_filemanager', get_string('courseoverviewfiles'), null, $overviewfilesoptions);
         $mform->addHelpButton('overviewfiles_filemanager', 'courseoverviewfiles');
         $summaryfields .= ',overviewfiles_filemanager';
     }
     if (!empty($course->id) and !has_capability('moodle/course:changesummary', $coursecontext)) {
         // Remove the description header it does not contain anything any more.
         $mform->removeElement('descriptionhdr');
         $mform->hardFreeze($summaryfields);
     }
     // Course format.
     $mform->addElement('header', 'courseformathdr', get_string('type_format', 'plugin'));
     $courseformats = get_sorted_course_formats(true);
     $formcourseformats = array();
     foreach ($courseformats as $courseformat) {
         $formcourseformats[$courseformat] = get_string('pluginname', "format_{$courseformat}");
     }
     if (isset($course->format)) {
         $course->format = course_get_format($course)->get_format();
         // replace with default if not found
         if (!in_array($course->format, $courseformats)) {
             // this format is disabled. Still display it in the dropdown
             $formcourseformats[$course->format] = get_string('withdisablednote', 'moodle', get_string('pluginname', 'format_' . $course->format));
         }
     }
     $mform->addElement('select', 'format', get_string('format'), $formcourseformats);
     $mform->addHelpButton('format', 'format');
     $mform->setDefault('format', $courseconfig->format);
     // Button to update format-specific options on format change (will be hidden by JavaScript).
     $mform->registerNoSubmitButton('updatecourseformat');
     $mform->addElement('submit', 'updatecourseformat', get_string('courseformatudpate'));
     // Just a placeholder for the course format options.
     $mform->addElement('hidden', 'addcourseformatoptionshere');

/**
 * Update a course.
 *
 * Please note this functions does not verify any access control,
 * the calling code is responsible for all validation (usually it is the form definition).
 *
 * @param object $data  - all the data needed for an entry in the 'course' table
 * @param array $editoroptions course description editor options
 * @return void
 */
function update_course($data, $editoroptions = NULL)
{
    global $CFG, $DB;
    $data->timemodified = time();
    $oldcourse = course_get_format($data->id)->get_course();
    $context = context_course::instance($oldcourse->id);
    if ($editoroptions) {
        $data = file_postupdate_standard_editor($data, 'summary', $editoroptions, $context, 'course', 'summary', 0);
    }
    if ($overviewfilesoptions = course_overviewfiles_options($data->id)) {
        $data = file_postupdate_standard_filemanager($data, 'overviewfiles', $overviewfilesoptions, $context, 'course', 'overviewfiles', 0);
    }
    if (!isset($data->category) or empty($data->category)) {
        // prevent nulls and 0 in category field
        unset($data->category);
    }
    $changesincoursecat = $movecat = (isset($data->category) and $oldcourse->category != $data->category);
    if (!isset($data->visible)) {
        // data not from form, add missing visibility info
        $data->visible = $oldcourse->visible;
    }
    if ($data->visible != $oldcourse->visible) {
        // reset the visibleold flag when manually hiding/unhiding course
        $data->visibleold = $data->visible;
        $changesincoursecat = true;
    } else {
        if ($movecat) {
            $newcategory = $DB->get_record('course_categories', array('id' => $data->category));
            if (empty($newcategory->visible)) {
                // make sure when moving into hidden category the course is hidden automatically
                $data->visible = 0;
            }
        }
    }
    // Update with the new data
    $DB->update_record('course', $data);
    // make sure the modinfo cache is reset
    rebuild_course_cache($data->id);
    // update course format options with full course data
    course_get_format($data->id)->update_course_format_options($data, $oldcourse);
    $course = $DB->get_record('course', array('id' => $data->id));
    if ($movecat) {
        $newparent = context_coursecat::instance($course->category);
        context_moved($context, $newparent);
    }
    fix_course_sortorder();
    // purge appropriate caches in case fix_course_sortorder() did not change anything
    cache_helper::purge_by_event('changesincourse');
    if ($changesincoursecat) {
        cache_helper::purge_by_event('changesincoursecat');
    }
    // Test for and remove blocks which aren't appropriate anymore
    blocks_remove_inappropriate($course);
    // Save any custom role names.
    save_local_role_names($course->id, $data);
    // update enrol settings
    enrol_course_updated(false, $course, $data);
    add_to_log($course->id, "course", "update", "edit.php?id={$course->id}", $course->id);
    // Trigger events
    events_trigger('course_updated', $course);
    if ($oldcourse->format !== $course->format) {
        // Remove all options stored for the previous format
        // We assume that new course format migrated everything it needed watching trigger
        // 'course_updated' and in method format_XXX::update_course_format_options()
        $DB->delete_records('course_format_options', array('courseid' => $course->id, 'format' => $oldcourse->format));
    }
}

    if ($categoryid) {
        // Creating new course in this category.
        $course = null;
        require_login();
        $category = $DB->get_record('course_categories', array('id' => $categoryid), '*', MUST_EXIST);
        $catcontext = context_coursecat::instance($category->id);
        require_capability('moodle/course:create', $catcontext);
        $PAGE->set_context($catcontext);
    } else {
        require_login();
        print_error('needcoursecategroyid');
    }
}
// Prepare course and the editor.
$editoroptions = array('maxfiles' => EDITOR_UNLIMITED_FILES, 'maxbytes' => $CFG->maxbytes, 'trusttext' => false, 'noclean' => true);
$overviewfilesoptions = course_overviewfiles_options($course);
if (!empty($course)) {
    // Add context for editor.
    $editoroptions['context'] = $coursecontext;
    $editoroptions['subdirs'] = file_area_contains_subdirs($coursecontext, 'course', 'summary', 0);
    $course = file_prepare_standard_editor($course, 'summary', $editoroptions, $coursecontext, 'course', 'summary', 0);
    if ($overviewfilesoptions) {
        file_prepare_standard_filemanager($course, 'overviewfiles', $overviewfilesoptions, $coursecontext, 'course', 'overviewfiles', 0);
    }
    // Inject current aliases.
    $aliases = $DB->get_records('role_names', array('contextid' => $coursecontext->id));
    foreach ($aliases as $alias) {
        $course->{'role_' . $alias->roleid} = $alias->name;
    }
    // Populate course tags.
    $course->tags = core_tag_tag::get_item_tags_array('core', 'course', $course->id);

//.........这里部分代码省略.........
        if (!empty($course->id)) {
            if (!has_capability('moodle/course:visibility', $coursecontext)) {
                $mform->hardFreeze('visible');
                $mform->setConstant('visible', $course->visible);
            }
        } else {
            if (!guess_if_creator_will_have_course_capability('moodle/course:visibility', $categorycontext)) {
                $mform->hardFreeze('visible');
                $mform->setConstant('visible', $courseconfig->visible);
            }
        }

        $mform->addElement('date_selector', 'startdate', get_string('startdate'));
        $mform->addHelpButton('startdate', 'startdate');
        $mform->setDefault('startdate', time() + 3600 * 24);

        $mform->addElement('text','idnumber', get_string('idnumbercourse'),'maxlength="100"  size="10"');
        $mform->addHelpButton('idnumber', 'idnumbercourse');
        $mform->setType('idnumber', PARAM_RAW);
        if (!empty($course->id) and !has_capability('moodle/course:changeidnumber', $coursecontext)) {
            $mform->hardFreeze('idnumber');
            $mform->setConstants('idnumber', $course->idnumber);
        }

        // Description.
        $mform->addElement('header', 'descriptionhdr', get_string('description'));
        $mform->setExpanded('descriptionhdr');

        $mform->addElement('editor','summary_editor', get_string('coursesummary'), null, $editoroptions);
        $mform->addHelpButton('summary_editor', 'coursesummary');
        $mform->setType('summary_editor', PARAM_RAW);
        $summaryfields = 'summary_editor';

        if ($overviewfilesoptions = course_overviewfiles_options($course)) {
            $mform->addElement('filemanager', 'overviewfiles_filemanager', get_string('courseoverviewfiles'), null, $overviewfilesoptions);
            $mform->addHelpButton('overviewfiles_filemanager', 'courseoverviewfiles');
            $summaryfields .= ',overviewfiles_filemanager';
        }

        if (!empty($course->id) and !has_capability('moodle/course:changesummary', $coursecontext)) {
            // Remove the description header it does not contain anything any more.
            $mform->removeElement('descriptionhdr');
            $mform->hardFreeze($summaryfields);
        }

        // Course format.
        $mform->addElement('header', 'courseformathdr', get_string('type_format', 'plugin'));

        $courseformats = get_sorted_course_formats(true);
        $formcourseformats = array();
        foreach ($courseformats as $courseformat) {
            $formcourseformats[$courseformat] = get_string('pluginname', "format_$courseformat");
        }
        if (isset($course->format)) {
            $course->format = course_get_format($course)->get_format(); // replace with default if not found
            if (!in_array($course->format, $courseformats)) {
                // this format is disabled. Still display it in the dropdown
                $formcourseformats[$course->format] = get_string('withdisablednote', 'moodle',
                        get_string('pluginname', 'format_'.$course->format));
            }
        }

        $mform->addElement('select', 'format', get_string('format'), $formcourseformats);
        $mform->addHelpButton('format', 'format');
        $mform->setDefault('format', $courseconfig->format);

<?php

global $CFG, $COURSE;
if (empty($CFG->courseoverviewfileslimit)) {
    return array();
}
require_once $CFG->libdir . '/filestorage/file_storage.php';
require_once $CFG->dirroot . '/course/lib.php';
$fs = get_file_storage();
$context = context_course::instance($COURSE->id);
$files = $fs->get_area_files($context->id, 'course', 'overviewfiles', false, 'filename', false);
if (count($files)) {
    $overviewfilesoptions = course_overviewfiles_options($COURSE->id);
    $acceptedtypes = $overviewfilesoptions['accepted_types'];
    if ($acceptedtypes !== '*') {
        // Filter only files with allowed extensions.
        require_once $CFG->libdir . '/filelib.php';
        foreach ($files as $key => $file) {
            if (!file_extension_in_typegroup($file->get_filename(), $acceptedtypes)) {
                unset($files[$key]);
            }
        }
    }
    if (count($files) > $CFG->courseoverviewfileslimit) {
        // Return no more than $CFG->courseoverviewfileslimit files.
        $files = array_slice($files, 0, $CFG->courseoverviewfileslimit, true);
    }
}
// Display course overview files.
$courseimage = '';
foreach ($files as $file) {