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<?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/>.
/**
* Displays the top level category or all courses
* In editing mode, allows the admin to edit a category,
* and rearrange courses
*
* @package core
* @subpackage course
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
require_once("../config.php");
require_once($CFG->dirroot.'/course/lib.php');
$id = required_param('id', PARAM_INT); // Category id
$page = optional_param('page', 0, PARAM_INT); // which page to show
$perpage = optional_param('perpage', $CFG->coursesperpage, PARAM_INT); // how many per page
$categoryedit = optional_param('categoryedit', -1, PARAM_BOOL);
$hide = optional_param('hide', 0, PARAM_INT);
$show = optional_param('show', 0, PARAM_INT);
$moveup = optional_param('moveup', 0, PARAM_INT);
$movedown = optional_param('movedown', 0, PARAM_INT);
$moveto = optional_param('moveto', 0, PARAM_INT);
$resort = optional_param('resort', 0, PARAM_BOOL);
$sesskey = optional_param('sesskey', '', PARAM_RAW);
if (empty($id)) {
print_error("unknowcategory");
}
$PAGE->set_category_by_id($id);
$PAGE->set_url(new moodle_url('/course/category.php', array('id' => $id)));
// This is sure to be the category context
$context = $PAGE->context;
// And the object has been loaded for us no need for another DB call
$category = $PAGE->category;
$canedit = can_edit_in_category($category->id);
if ($canedit) {
if ($categoryedit !== -1) {
$USER->editing = $categoryedit;
}
require_login();
$editingon = $PAGE->user_is_editing();
} else {
if ($CFG->forcelogin) {
require_login();
}
$editingon = false;
}
if (!$category->visible) {
require_capability('moodle/category:viewhiddencategories', $context);
}
$canmanage = has_capability('moodle/category:manage', $context);
$sesskeyprovided = !empty($sesskey) && confirm_sesskey($sesskey);
// Process any category actions.
if ($canmanage && $resort && $sesskeyprovided) {
// Resort the category if requested
if ($courses = get_courses($category->id, "fullname ASC", 'c.id,c.fullname,c.sortorder')) {
$i = 1;
foreach ($courses as $course) {
$DB->set_field('course', 'sortorder', $category->sortorder+$i, array('id'=>$course->id));
$i++;
}
fix_course_sortorder(); // should not be needed
}
}
// Process any course actions.
if ($editingon && $sesskeyprovided) {
// Move a specified course to a new category
if (!empty($moveto) and $data = data_submitted()) {
// Some courses are being moved
// user must have category update in both cats to perform this
require_capability('moodle/category:manage', $context);
require_capability('moodle/category:manage', get_context_instance(CONTEXT_COURSECAT, $moveto));
if (!$destcategory = $DB->get_record('course_categories', array('id' => $data->moveto))) {
print_error('cannotfindcategory', '', '', $data->moveto);
}
$courses = array();
foreach ($data as $key => $value) {
if (preg_match('/^c\d+$/', $key)) {
$courseid = substr($key, 1);
array_push($courses, $courseid);
// check this course's category
if ($movingcourse = $DB->get_record('course', array('id'=>$courseid))) {
if ($movingcourse->category != $id ) {
print_error('coursedoesnotbelongtocategory');
}
} else {
print_error('cannotfindcourse');
}
}
}
move_courses($courses, $data->moveto);
}
// Hide or show a course
if (!empty($hide) or !empty($show)) {
if (!empty($hide)) {
$course = $DB->get_record('course', array('id' => $hide));
$visible = 0;
} else {
$course = $DB->get_record('course', array('id' => $show));
$visible = 1;
}
if ($course) {
$coursecontext = get_context_instance(CONTEXT_COURSE, $course->id);
require_capability('moodle/course:visibility', $coursecontext);
// Set the visibility of the course. we set the old flag when user manually changes visibility of course.
$DB->update_record('course', array('id' => $course->id, 'visible' => $visible, 'visibleold' => $visible, 'timemodified' => time()));
}
}
// Move a course up or down
if (!empty($moveup) or !empty($movedown)) {
require_capability('moodle/category:manage', $context);
// Ensure the course order has continuous ordering
fix_course_sortorder();
$swapcourse = NULL;
if (!empty($moveup)) {
if ($movecourse = $DB->get_record('course', array('id' => $moveup))) {
$swapcourse = $DB->get_record('course', array('sortorder' => $movecourse->sortorder - 1));
}
} else {
if ($movecourse = $DB->get_record('course', array('id' => $movedown))) {
$swapcourse = $DB->get_record('course', array('sortorder' => $movecourse->sortorder + 1));
}
}
if ($swapcourse and $movecourse) {
// check course's category
if ($movecourse->category != $id) {
print_error('coursedoesnotbelongtocategory');
}
$DB->set_field('course', 'sortorder', $swapcourse->sortorder, array('id' => $movecourse->id));
$DB->set_field('course', 'sortorder', $movecourse->sortorder, array('id' => $swapcourse->id));
}
}
} // End of editing stuff
// Prepare the standard URL params for this page. We'll need them later.
$urlparams = array('id' => $id);
if ($page) {
$urlparams['page'] = $page;
}
if ($perpage) {
$urlparams['perpage'] = $perpage;
}
// Begin output
if ($editingon && can_edit_in_category()) {
// Integrate into the admin tree only if the user can edit categories at the top level,
// otherwise the admin block does not appear to this user, and you get an error.
require_once($CFG->libdir . '/adminlib.php');
admin_externalpage_setup('coursemgmt', '', $urlparams, $CFG->wwwroot . '/course/category.php');
$PAGE->set_context($context); // Ensure that we are actually showing blocks etc for the cat context
$settingsnode = $PAGE->settingsnav->find_active_node();
if ($settingsnode) {
$settingsnode->make_inactive();
$settingsnode->force_open();
$PAGE->navbar->add($settingsnode->text, $settingsnode->action);
}
echo $OUTPUT->header();
} else {
$site = get_site();
$PAGE->set_title("$site->shortname: $category->name");
$PAGE->set_heading($site->fullname);
$PAGE->set_button(print_course_search('', true, 'navbar'));
$PAGE->set_pagelayout('coursecategory');
echo $OUTPUT->header();
}
/// Print the category selector
$displaylist = array();
$notused = array();
make_categories_list($displaylist, $notused);
echo '<div class="categorypicker">';
$select = new single_select(new moodle_url('/course/category.php'), 'id', $displaylist, $category->id, null, 'switchcategory');
$select->set_label(get_string('categories').':');
echo $OUTPUT->render($select);
echo '</div>';
/// Print current category description
if (!$editingon && $category->description) {
echo $OUTPUT->box_start();
$options = new stdClass;
$options->noclean = true;
$options->para = false;
$options->overflowdiv = true;
if (!isset($category->descriptionformat)) {
$category->descriptionformat = FORMAT_MOODLE;
}
$text = file_rewrite_pluginfile_urls($category->description, 'pluginfile.php', $context->id, 'coursecat', 'description', null);
echo format_text($text, $category->descriptionformat, $options);
echo $OUTPUT->box_end();
}
if ($editingon && $canmanage) {
echo $OUTPUT->container_start('buttons');
// Print button to update this category
$url = new moodle_url('/course/editcategory.php', array('id' => $category->id));
echo $OUTPUT->single_button($url, get_string('editcategorythis'), 'get');
// Print button for creating new categories
$url = new moodle_url('/course/editcategory.php', array('parent' => $category->id));
echo $OUTPUT->single_button($url, get_string('addsubcategory'), 'get');
echo $OUTPUT->container_end();
}
// Print out all the sub-categories
// In order to view hidden subcategories the user must have the viewhiddencategories
// capability in the current category.
if (has_capability('moodle/category:viewhiddencategories', $context)) {
$categorywhere = '';
} else {
$categorywhere = 'AND cc.visible = 1';
}
// We're going to preload the context for the subcategory as we know that we
// need it later on for formatting.
$ctxselect = context_helper::get_preload_record_columns_sql('ctx');
$sql = "SELECT cc.*, $ctxselect
FROM {course_categories} cc
JOIN {context} ctx ON cc.id = ctx.instanceid
WHERE cc.parent = :parentid AND
ctx.contextlevel = :contextlevel
$categorywhere
ORDER BY cc.sortorder ASC";
$subcategories = $DB->get_recordset_sql($sql, array('parentid' => $category->id, 'contextlevel' => CONTEXT_COURSECAT));
// Prepare a table to display the sub categories.
$table = new html_table;
$table->attributes = array('border' => '0', 'cellspacing' => '2', 'cellpadding' => '4', 'class' => 'generalbox boxaligncenter category_subcategories');
$table->head = array(new lang_string('subcategories'));
$table->data = array();
$baseurl = new moodle_url('/course/category.php');
foreach ($subcategories as $subcategory) {
// Preload the context we will need it to format the category name shortly.
context_helper::preload_from_record($subcategory);
$context = get_context_instance(CONTEXT_COURSECAT, $subcategory->id);
// Prepare the things we need to create a link to the subcategory
$attributes = $subcategory->visible ? array() : array('class' => 'dimmed');
$text = format_string($subcategory->name, true, array('context' => $context));
// Add the subcategory to the table
$baseurl->param('id', $subcategory->id);
$table->data[] = array(html_writer::link($baseurl, $text, $attributes));
}
$subcategorieswereshown = (count($table->data) > 0);
if ($subcategorieswereshown) {
echo html_writer::table($table);
}
// Print out all the courses
$courses = get_courses_page($category->id, 'c.sortorder ASC',
'c.id,c.sortorder,c.shortname,c.fullname,c.summary,c.visible',
$totalcount, $page*$perpage, $perpage);
$numcourses = count($courses);
if (!$courses) {
if (empty($subcategorieswereshown)) {
echo $OUTPUT->heading(get_string("nocoursesyet"));
}
} else if ($numcourses <= COURSE_MAX_SUMMARIES_PER_PAGE and !$page and !$editingon) {
echo $OUTPUT->box_start('courseboxes');
print_courses($category);
echo $OUTPUT->box_end();
} else {
echo $OUTPUT->paging_bar($totalcount, $page, $perpage, "/course/category.php?id=$category->id&perpage=$perpage");
echo '<form id="movecourses" action="category.php" method="post"><div>';
echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
echo '<table border="0" cellspacing="2" cellpadding="4" class="generalbox boxaligncenter"><tr>';
echo '<th class="header" scope="col">'.get_string('courses').'</th>';
if ($editingon) {
echo '<th class="header" scope="col">'.get_string('edit').'</th>';
echo '<th class="header" scope="col">'.get_string('select').'</th>';
} else {
echo '<th class="header" scope="col">&nbsp;</th>';
}
echo '</tr>';
$count = 0;
$abletomovecourses = false; // for now
// Checking if we are at the first or at the last page, to allow courses to
// be moved up and down beyond the paging border
if ($totalcount > $perpage) {
$atfirstpage = ($page == 0);
if ($perpage > 0) {
$atlastpage = (($page + 1) == ceil($totalcount / $perpage));
} else {
$atlastpage = true;
}
} else {
$atfirstpage = true;
$atlastpage = true;
}
$baseurl = new moodle_url('/course/category.php', $urlparams + array('sesskey' => sesskey()));
foreach ($courses as $acourse) {
$coursecontext = get_context_instance(CONTEXT_COURSE, $acourse->id);
$count++;
$up = ($count > 1 || !$atfirstpage);
$down = ($count < $numcourses || !$atlastpage);
$linkcss = $acourse->visible ? '' : ' class="dimmed" ';
echo '<tr>';
$coursename = get_course_display_name_for_list($acourse);
echo '<td><a '.$linkcss.' href="view.php?id='.$acourse->id.'">'. format_string($coursename) .'</a></td>';
if ($editingon) {
echo '<td>';
if (has_capability('moodle/course:update', $coursecontext)) {
$url = new moodle_url('/course/edit.php', array('id' => $acourse->id, 'category' => $id, 'returnto' => 'category'));
echo $OUTPUT->action_icon($url, new pix_icon('t/edit', get_string('settings')));
}
// role assignment link
if (has_capability('moodle/course:enrolreview', $coursecontext)) {
$url = new moodle_url('/enrol/users.php', array('id' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('i/users', get_string('enrolledusers', 'enrol')));
}
if (can_delete_course($acourse->id)) {
$url = new moodle_url('/course/delete.php', array('id' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/delete', get_string('delete')));
}
// MDL-8885, users with no capability to view hidden courses, should not be able to lock themselves out
if (has_capability('moodle/course:visibility', $coursecontext) && has_capability('moodle/course:viewhiddencourses', $coursecontext)) {
if (!empty($acourse->visible)) {
$url = new moodle_url($baseurl, array('hide' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/hide', get_string('hide')));
} else {
$url = new moodle_url($baseurl, array('show' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/show', get_string('show')));
}
}
if (has_capability('moodle/backup:backupcourse', $coursecontext)) {
$url = new moodle_url('/backup/backup.php', array('id' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/backup', get_string('backup')));
}
if (has_capability('moodle/restore:restorecourse', $coursecontext)) {
$url = new moodle_url('/backup/restorefile.php', array('contextid' => $coursecontext->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/restore', get_string('restore')));
}
if ($canmanage) {
if ($up) {
$url = new moodle_url($baseurl, array('moveup' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/up', get_string('moveup')));
}
if ($down) {
$url = new moodle_url($baseurl, array('movedown' => $acourse->id));
echo $OUTPUT->action_icon($url, new pix_icon('t/down', get_string('movedown')));
}
$abletomovecourses = true;
}
echo '</td>';
echo '<td align="center">';
echo '<input type="checkbox" name="c'.$acourse->id.'" />';
echo '</td>';
} else {
echo '<td align="right">';
// print enrol info
if ($icons = enrol_get_course_info_icons($acourse)) {
foreach ($icons as $pix_icon) {
echo $OUTPUT->render($pix_icon);
}
}
if (!empty($acourse->summary)) {
$url = new moodle_url("/course/info.php?id=$acourse->id");
echo $OUTPUT->action_link($url, '<img alt="'.get_string('info').'" class="icon" src="'.$OUTPUT->pix_url('i/info') . '" />',
new popup_action('click', $url, 'courseinfo'), array('title'=>get_string('summary')));
}
echo "</td>";
}
echo "</tr>";
}
if ($abletomovecourses) {
$movetocategories = array();
$notused = array();
make_categories_list($movetocategories, $notused, 'moodle/category:manage');
$movetocategories[$category->id] = get_string('moveselectedcoursesto');
echo '<tr><td colspan="3" align="right">';
echo html_writer::select($movetocategories, 'moveto', $category->id, null, array('id'=>'movetoid'));
$PAGE->requires->js_init_call('M.util.init_select_autosubmit', array('movecourses', 'movetoid', false));
echo '<input type="hidden" name="id" value="'.$category->id.'" />';
echo '</td></tr>';
}
echo '</table>';
echo '</div></form>';
echo '<br />';
}
echo '<div class="buttons">';
if ($canmanage and $numcourses > 1) {
// Print button to re-sort courses by name
$url = new moodle_url('/course/category.php', array('id' => $category->id, 'resort' => 'name', 'sesskey' => sesskey()));
echo $OUTPUT->single_button($url, get_string('resortcoursesbyname'), 'get');
}
if (has_capability('moodle/course:create', $context)) {
// Print button to create a new course
$url = new moodle_url('/course/edit.php', array('category' => $category->id, 'returnto' => 'category'));
echo $OUTPUT->single_button($url, get_string('addnewcourse'), 'get');
}
if (!empty($CFG->enablecourserequests) && $category->id == $CFG->defaultrequestcategory) {
print_course_request_buttons(get_context_instance(CONTEXT_SYSTEM));
}
echo '</div>';
print_course_search();
echo $OUTPUT->footer();
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