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category.php
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<?php // $Id$
// Displays the top level category or all courses
// In editing mode, allows the admin to edit a category,
// and rearrange courses
require_once("../config.php");
require_once("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);
$resort = optional_param('resort', 0, PARAM_BOOL);
if ($CFG->forcelogin) {
require_login();
}
if (!$site = get_site()) {
print_error('siteisnotdefined', 'debug');
}
if (empty($id)) {
print_error("unknowcategory");
}
$PAGE->set_category_by_id($id);
$context = $PAGE->context;
$category = $PAGE->category;
if (!$category->visible) {
require_capability('moodle/category:viewhiddencategories', $context);
}
if (update_category_button($category->id)) {
if ($categoryedit !== -1) {
$USER->editing = $categoryedit;
}
$editingon = $PAGE->user_is_editing();
$navbaritem = update_category_button($category->id); // Must call this again after updating the state.
} else {
$navbaritem = print_course_search('', true, 'navbar');
$editingon = false;
}
// Process any category actions.
if (has_capability('moodle/category:manage', $context)) {
/// Resort the category if requested
if ($resort and confirm_sesskey()) {
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));
$i++;
}
fix_course_sortorder(); // should not be needed
}
}
}
if(!empty($CFG->allowcategorythemes) && isset($category->theme)) {
// specifying theme here saves us some dbqs
theme_setup($category->theme);
}
/// Print headings
$numcategories = $DB->count_records('course_categories');
$stradministration = get_string('administration');
$strcategories = get_string('categories');
$strcategory = get_string('category');
$strcourses = get_string('courses');
$navlinks = array();
$navlinks[] = array('name' => $strcategories, 'link' => 'index.php', 'type' => 'misc');
$navlinks[] = array('name' => format_string($category->name), 'link' => null, 'type' => 'misc');
$navigation = build_navigation($navlinks);
if ($editingon && update_category_button()) {
// Integrate into the admin tree only if the user can edit categories at the top level,
// otherwise the admin block does not appear to this user, and you get an error.
require_once($CFG->libdir.'/adminlib.php');
admin_externalpage_setup('coursemgmt', $navbaritem, array('id' => $id,
'page' => $page, 'perpage' => $perpage), $CFG->wwwroot . '/course/category.php');
admin_externalpage_print_header();
} else {
print_header("$site->shortname: $category->name", "$site->fullname: $strcourses", $navigation, '', '', true, $navbaritem);
}
/// Print link to roles
if (has_capability('moodle/role:assign', $context)) {
echo '<div class="rolelink"><a href="'.$CFG->wwwroot.'/'.$CFG->admin.'/roles/assign.php?contextid='.
$context->id.'">'.get_string('assignroles','role').'</a></div>';
}
/// Print the category selector
$displaylist = array();
$notused = array();
make_categories_list($displaylist, $notused);
echo '<div class="categorypicker">';
popup_form('category.php?id=', $displaylist, 'switchcategory', $category->id, '', '', '', false, 'self', $strcategories.':');
echo '</div>';
/// Print current category description
if (!$editingon && $category->description) {
print_box_start();
echo format_text($category->description); // for multilang filter
print_box_end();
}
/// Process any course actions.
if ($editingon) {
/// Move a specified course to a new category
if (!empty($moveto) and $data = data_submitted() and confirm_sesskey()) { // 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 => $value) {
if (preg_match('/^c\d+$/', $key)) {
array_push($courses, substr($key, 1));
}
}
move_courses($courses, $data->moveto);
}
/// Hide or show a course
if ((!empty($hide) or !empty($show)) and confirm_sesskey()) {
require_capability('moodle/course:visibility', $context);
if (!empty($hide)) {
$course = $DB->get_record('course', array('id' => $hide));
$visible = 0;
} else {
$course = $DB->get_record('course', array('id' => $show));
$visible = 1;
}
if ($course) {
if (!$DB->set_field('course', 'visible', $visible, array('id' => $course->id))) {
print_error('errorupdatingcoursevisibility');
}
}
}
/// Move a course up or down
if ((!empty($moveup) or !empty($movedown)) and confirm_sesskey()) {
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) {
$DB->set_field('course', 'sortorder', $swapcourse->sortorder, array('id' => $movecourse->id));
$DB->set_field('course', 'sortorder', $movecourse->sortorder, array('id' => $swapcourse->id));
}
}
} // End of editing stuff
if ($editingon && has_capability('moodle/category:manage', $context)) {
echo '<div class="buttons">';
// Print button to update this category
$options = array('id' => $category->id);
print_single_button($CFG->wwwroot.'/course/editcategory.php', $options, get_string('editcategorythis'), 'get');
// Print button for creating new categories
$options = array('parent' => $category->id);
print_single_button($CFG->wwwroot.'/course/editcategory.php', $options, get_string('addsubcategory'), 'get');
echo '</div>';
}
/// Print out all the sub-categories
if ($subcategories = $DB->get_records('course_categories', array('parent' => $category->id), 'sortorder ASC')) {
$firstentry = true;
foreach ($subcategories as $subcategory) {
if ($subcategory->visible || has_capability('moodle/category:viewhiddencategories', $context)) {
$subcategorieswereshown = true;
if ($firstentry) {
echo '<table border="0" cellspacing="2" cellpadding="4" class="generalbox boxaligncenter">';
echo '<tr><th scope="col">'.get_string('subcategories').'</th></tr>';
echo '<tr><td style="white-space: nowrap">';
$firstentry = false;
}
$catlinkcss = $subcategory->visible ? '' : ' class="dimmed" ';
echo '<a '.$catlinkcss.' href="category.php?id='.$subcategory->id.'">'.
format_string($subcategory->name).'</a><br />';
}
}
if (!$firstentry) {
echo '</td></tr></table>';
echo '<br />';
}
}
/// 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,c.guest,c.password',
$totalcount, $page*$perpage, $perpage);
$numcourses = count($courses);
if (!$courses) {
if (empty($subcategorieswereshown)) {
print_heading(get_string("nocoursesyet"));
}
} else if ($numcourses <= COURSE_MAX_SUMMARIES_PER_PAGE and !$page and !$editingon) {
print_box_start('courseboxes');
print_courses($category);
print_box_end();
} else {
print_paging_bar($totalcount, $page, $perpage, "category.php?id=$category->id&perpage=$perpage&");
$strcourses = get_string('courses');
$strselect = get_string('select');
$stredit = get_string('edit');
$strdelete = get_string('delete');
$strbackup = get_string('backup');
$strrestore = get_string('restore');
$strmoveup = get_string('moveup');
$strmovedown = get_string('movedown');
$strupdate = get_string('update');
$strhide = get_string('hide');
$strshow = get_string('show');
$strsummary = get_string('summary');
$strsettings = get_string('settings');
$strassignteachers = get_string('assignteachers');
$strallowguests = get_string('allowguests');
$strrequireskey = get_string('requireskey');
echo '<form id="movecourses" action="category.php" method="post"><div>';
echo '<input type="hidden" name="sesskey" value="'.sesskey().'" />';
echo '<table border="0" cellspacing="2" cellpadding="4" class="generalbox boxaligncenter"><tr>';
echo '<th class="header" scope="col">'.$strcourses.'</th>';
if ($editingon) {
echo '<th class="header" scope="col">'.$stredit.'</th>';
echo '<th class="header" scope="col">'.$strselect.'</th>';
} else {
echo '<th class="header" scope="col"> </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;
}
$spacer = '<img src="'.$CFG->wwwroot.'/pix/spacer.gif" class="iconsmall" alt="" /> ';
foreach ($courses as $acourse) {
if (isset($acourse->context)) {
$coursecontext = $acourse->context;
} else {
$coursecontext = get_context_instance(CONTEXT_COURSE, $acourse->id);
}
$count++;
$up = ($count > 1 || !$atfirstpage);
$down = ($count < $numcourses || !$atlastpage);
$linkcss = $acourse->visible ? '' : ' class="dimmed" ';
echo '<tr>';
echo '<td><a '.$linkcss.' href="view.php?id='.$acourse->id.'">'. format_string($acourse->fullname) .'</a></td>';
if ($editingon) {
echo '<td>';
if (has_capability('moodle/course:update', $coursecontext)) {
echo '<a title="'.$strsettings.'" href="'.$CFG->wwwroot.'/course/edit.php?id='.$acourse->id.'">'.
'<img src="'.$CFG->pixpath.'/t/edit.gif" class="iconsmall" alt="'.$stredit.'" /></a> ';
} else {
echo $spacer;
}
// role assignment link
if (has_capability('moodle/role:assign', $coursecontext)) {
echo '<a title="'.get_string('assignroles', 'role').'" href="'.$CFG->wwwroot.'/'.$CFG->admin.'/roles/assign.php?contextid='.$coursecontext->id.'">'.
'<img src="'.$CFG->pixpath.'/i/roles.gif" class="iconsmall" alt="'.get_string('assignroles', 'role').'" /></a> ';
} else {
echo $spacer;
}
if (can_delete_course($acourse->id)) {
echo '<a title="'.$strdelete.'" href="delete.php?id='.$acourse->id.'">'.
'<img src="'.$CFG->pixpath.'/t/delete.gif" class="iconsmall" alt="'.$strdelete.'" /></a> ';
} else {
echo $spacer;
}
// 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)) {
echo '<a title="'.$strhide.'" href="category.php?id='.$category->id.'&page='.$page.
'&perpage='.$perpage.'&hide='.$acourse->id.'&sesskey='.sesskey().'">'.
'<img src="'.$CFG->pixpath.'/t/hide.gif" class="iconsmall" alt="'.$strhide.'" /></a> ';
} else {
echo '<a title="'.$strshow.'" href="category.php?id='.$category->id.'&page='.$page.
'&perpage='.$perpage.'&show='.$acourse->id.'&sesskey='.sesskey().'">'.
'<img src="'.$CFG->pixpath.'/t/show.gif" class="iconsmall" alt="'.$strshow.'" /></a> ';
}
} else {
echo $spacer;
}
if (has_capability('moodle/site:backup', $coursecontext)) {
echo '<a title="'.$strbackup.'" href="../backup/backup.php?id='.$acourse->id.'">'.
'<img src="'.$CFG->pixpath.'/t/backup.gif" class="iconsmall" alt="'.$strbackup.'" /></a> ';
} else {
echo $spacer;
}
if (has_capability('moodle/site:restore', $coursecontext)) {
echo '<a title="'.$strrestore.'" href="../files/index.php?id='.$acourse->id.
'&wdir=/backupdata">'.
'<img src="'.$CFG->pixpath.'/t/restore.gif" class="iconsmall" alt="'.$strrestore.'" /></a> ';
} else {
echo $spacer;
}
if (has_capability('moodle/category:manage', $context)) {
if ($up) {
echo '<a title="'.$strmoveup.'" href="category.php?id='.$category->id.'&page='.$page.
'&perpage='.$perpage.'&moveup='.$acourse->id.'&sesskey='.sesskey().'">'.
'<img src="'.$CFG->pixpath.'/t/up.gif" class="iconsmall" alt="'.$strmoveup.'" /></a> ';
} else {
echo $spacer;
}
if ($down) {
echo '<a title="'.$strmovedown.'" href="category.php?id='.$category->id.'&page='.$page.
'&perpage='.$perpage.'&movedown='.$acourse->id.'&sesskey='.sesskey().'">'.
'<img src="'.$CFG->pixpath.'/t/down.gif" class="iconsmall" alt="'.$strmovedown.'" /></a> ';
} else {
echo $spacer;
}
$abletomovecourses = true;
} else {
echo $spacer, $spacer;
}
echo '</td>';
echo '<td align="center">';
echo '<input type="checkbox" name="c'.$acourse->id.'" />';
echo '</td>';
} else {
echo '<td align="right">';
if (!empty($acourse->guest)) {
echo '<a href="view.php?id='.$acourse->id.'"><img title="'.
$strallowguests.'" class="icon" src="'.
$CFG->pixpath.'/i/guest.gif" alt="'.$strallowguests.'" /></a>';
}
if (!empty($acourse->password)) {
echo '<a href="view.php?id='.$acourse->id.'"><img title="'.
$strrequireskey.'" class="icon" src="'.
$CFG->pixpath.'/i/key.gif" alt="'.$strrequireskey.'" /></a>';
}
if (!empty($acourse->summary)) {
link_to_popup_window ("/course/info.php?id=$acourse->id", "courseinfo",
'<img alt="'.get_string('info').'" class="icon" src="'.$CFG->pixpath.'/i/info.gif" />',
400, 500, $strsummary);
}
echo "</td>";
}
echo "</tr>";
}
if ($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">';
choose_from_menu($movetocategories, 'moveto', $category->id, '', "javascript:submitFormById('movecourses')");
echo '<input type="hidden" name="id" value="'.$category->id.'" />';
echo '</td></tr>';
}
echo '</table>';
echo '</div></form>';
echo '<br />';
}
echo '<div class="buttons">';
if (has_capability('moodle/category:manage', $context) and $numcourses > 1) {
/// Print button to re-sort courses by name
unset($options);
$options['id'] = $category->id;
$options['resort'] = 'name';
$options['sesskey'] = sesskey();
print_single_button('category.php', $options, get_string('resortcoursesbyname'), 'get');
}
if (has_capability('moodle/course:create', $context)) {
/// Print button to create a new course
unset($options);
$options['category'] = $category->id;
print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
}
if (!empty($CFG->enablecourserequests) && $category->id == $CFG->enablecourserequests) {
print_course_request_buttons(get_context_instance(CONTEXT_SYSTEM));
}
echo '</div>';
print_course_search();
print_footer();
?>