moodle/course/index.php
2008-09-25 02:09:49 +00:00

409 lines
16 KiB
PHP

<?php // $Id$
// For most people, just lists the course categories
// Allows the admin to create, delete and rename course categories
require_once("../config.php");
require_once("lib.php");
$categoryedit = optional_param('categoryedit', -1,PARAM_BOOL);
$delete = optional_param('delete',0,PARAM_INT);
$hide = optional_param('hide',0,PARAM_INT);
$show = optional_param('show',0,PARAM_INT);
$move = optional_param('move',0,PARAM_INT);
$moveto = optional_param('moveto',-1,PARAM_INT);
$moveup = optional_param('moveup',0,PARAM_INT);
$movedown = optional_param('movedown',0,PARAM_INT);
$sysctx = get_context_instance(CONTEXT_SYSTEM);
$context = $sysctx;
if (!$site = get_site()) {
print_error('siteisnotdefined', 'debug');
}
if ($CFG->forcelogin) {
require_login();
}
if (has_capability('moodle/category:update', $sysctx)) {
if ($categoryedit !== -1) {
$USER->categoryediting = $categoryedit;
}
$adminediting = !empty($USER->categoryediting);
} else {
$adminediting = false;
}
$stradministration = get_string('administration');
$strcategories = get_string('categories');
$strcategory = get_string('category');
$strcourses = get_string('courses');
$stredit = get_string('edit');
$strdelete = get_string('delete');
$straction = get_string('action');
/// Unless it's an editing admin, just print the regular listing of courses/categories
if (!$adminediting) {
/// Print form for creating new categories
$countcategories = $DB->count_records('course_categories');
if ($countcategories > 1 || ($countcategories == 1 && $DB->count_records('course') > 200)) {
$strcourses = get_string('courses');
$strcategories = get_string('categories');
$navlinks = array();
$navlinks[] = array('name'=>$strcategories,'link'=>'','type'=>'misc');
$navigation = build_navigation($navlinks);
print_header("$site->shortname: $strcategories", $strcourses, $navigation, '', '', true, update_categories_button());
print_heading($strcategories);
echo skip_main_destination();
print_box_start('categorybox');
print_whole_category_list();
print_box_end();
print_course_search();
} else {
$strfulllistofcourses = get_string('fulllistofcourses');
print_header("$site->shortname: $strfulllistofcourses", $strfulllistofcourses,
build_navigation(array(array('name'=>$strfulllistofcourses, 'link'=>'','type'=>'misc'))),
'', '', true, update_categories_button());
echo skip_main_destination();
print_box_start('courseboxes');
print_courses(0);
print_box_end();
}
/// I am not sure this context in the next has_capability call is correct.
if (isloggedin() and !isguest() and !has_capability('moodle/course:create', $sysctx) and $CFG->enablecourserequests) { // Print link to request a new course
print_single_button('request.php', NULL, get_string('courserequest'), 'get');
}
if (has_capability('moodle/course:create', $sysctx)) { // Print link to create a new course
/// Get the 1st available category
$options = array('category' => $DB->get_field('course_categories', 'id', array('parent'=>'0')));
print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
}
if (has_capability('moodle/site:approvecourse', $sysctx) and !empty($CFG->enablecourserequests)) {
print_single_button('pending.php',NULL, get_string('coursespending'),'get');
}
print_footer();
exit;
}
/// From now on is all the admin/course creator functions
/// Delete a category if necessary
if (!empty($delete) and confirm_sesskey()) {
require_once('delete_category_form.php');
if (!$deletecat = $DB->get_record('course_categories', array('id'=>$delete))) {
print_error('invalidcategoryid');
}
$heading = get_string('deletecategory', '', format_string($deletecat->name));
$context = get_context_instance(CONTEXT_COURSECAT, $delete);
require_capability('moodle/category:delete', $context);
$mform = new delete_category_form(null, $deletecat);
$mform->set_data(array('delete'=>$delete));
if ($mform->is_cancelled()) {
redirect('index.php');
} else if (!$data= $mform->get_data()) {
require_once($CFG->libdir . '/questionlib.php');
print_category_edit_header();
print_heading($heading);
print_box(get_string('deletecategorycheck2'), 'generalbox boxwidthnormal boxaligncenter');
if (question_context_has_any_questions($context)) {
print_box(get_string('deletecoursecategorywithquestions', 'question'),
'generalbox boxwidthnormal boxaligncenter');
}
$mform->display();
print_footer();
exit();
}
print_category_edit_header();
print_heading($heading);
if ($data->fulldelete) {
category_delete_full($deletecat, true);
} else {
category_delete_move($deletecat, $data->newparent, true);
}
print_continue('index.php');
print_footer();
die;
}
/// Print headings
print_category_edit_header();
print_heading($strcategories);
/// Create a default category if necessary
if (!$categories = get_categories()) { /// No category yet!
// Try and make one
$tempcat = new object();
$tempcat->name = get_string('miscellaneous');
if (!$tempcat->id = $DB->insert_record('course_categories', $tempcat)) {
print_error('cannotsetupcategory');
}
$tempcat->context = get_context_instance(CONTEXT_COURSECAT, $tempcat->id);
mark_context_dirty('/'.SYSCONTEXTID);
}
/// Move a category to a new parent if required
if (!empty($move) and ($moveto>=0) and confirm_sesskey()) {
if ($tempcat = $DB->get_record('course_categories', array('id'=>$move))) {
if ($tempcat->parent != $moveto) {
$newp = $DB->get_record('course_categories', array('id'=>$moveto));
if (! move_category($tempcat, $newp)) {
notify('Could not update that category!');
}
}
}
}
/// Hide or show a category
if ((!empty($hide) or !empty($show)) and confirm_sesskey()) {
if (!empty($hide)) {
$tempcat = $DB->get_record('course_categories', array('id'=>$hide));
$visible = 0;
} else {
$tempcat = $DB->get_record('course_categories', array('id'=>$show));
$visible = 1;
}
if ($tempcat) {
if (!$DB->set_field('course_categories', 'visible', $visible, array('id'=>$tempcat->id))) {
notify('Could not update that category!');
}
if (!$DB->set_field('course', 'visible', $visible, array('category'=>$tempcat->id))) {
notify('Could not hide/show any courses in this category !');
}
}
}
/// Move a category up or down
if ((!empty($moveup) or !empty($movedown)) and confirm_sesskey()) {
fix_course_sortorder();
$swapcategory = NULL;
if (!empty($moveup)) {
if ($movecategory = $DB->get_record('course_categories', array('id'=>$moveup))) {
if ($swapcategory = $DB->get_records_select('course_categories', "sortorder<? AND parent=?", array($movecategory->sortorder, $movecategory->parent), 'sortorder ASC', '*', 0, 1)) {
$swapcategory = reset($swapcategory);
}
}
} else {
if ($movecategory = $DB->get_record('course_categories', array('id'=>$movedown))) {
if ($swapcategory = $DB->get_records_select('course_categories', "sortorder>? AND parent=?", array($movecategory->sortorder, $movecategory->parent), 'sortorder ASC', '*', 0, 1)) {
$swapcategory = reset($swapcategory);
}
}
}
if ($swapcategory and $movecategory) {
$DB->set_field('course_categories', 'sortorder', $swapcategory->sortorder, array('id'=>$movecategory->id));
$DB->set_field('course_categories', 'sortorder', $movecategory->sortorder, array('id'=>$swapcategory->id));
}
// finally reorder courses
fix_course_sortorder();
}
/// This should not be needed anymore
//fix_course_sortorder();
/// Print out the categories with all the knobs
$strcategories = get_string('categories');
$strcourses = get_string('courses');
$strmovecategoryto = get_string('movecategoryto');
$stredit = get_string('edit');
$displaylist = array();
$parentlist = array();
$displaylist[0] = get_string('top');
make_categories_list($displaylist, $parentlist, '');
echo '<table class="generalbox editcourse boxaligncenter"><tr class="header">';
echo '<th class="header" scope="col">'.$strcategories.'</th>';
echo '<th class="header" scope="col">'.$strcourses.'</th>';
echo '<th class="header" scope="col">'.$stredit.'</th>';
echo '<th class="header" scope="col">'.$strmovecategoryto.'</th>';
echo '</tr>';
print_category_edit(NULL, $displaylist, $parentlist);
echo '</table>';
echo '<div class="buttons">';
if (!empty($category->id)) {
// Print link to create a new course in current category
if (has_capability('moodle/course:create', $context)) {
$options = array();
$options['category'] = $category->id;
print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
}
}else{
if (has_capability('moodle/course:create', $sysctx)) {
// print create course link to first category
$options = array();
$options = array('category' => $DB->get_field('course_categories', 'id', array('parent'=>'0')));
print_single_button('edit.php', $options, get_string('addnewcourse'), 'get');
}
}
// Print button for creating new categories
if (has_capability('moodle/category:create', $context)) {
unset($options);
if (!empty($category->id)) {
$options['id'] = $category->id;
} else {
$options['id'] = 0;
}
$options['categoryadd'] = 1;
print_single_button('editcategory.php', $options, get_string('addnewcategory'), 'get');
}
if (has_capability('moodle/site:approvecourse', $sysctx) and !empty($CFG->enablecourserequests)) {
print_single_button('pending.php',NULL, get_string('coursespending'), 'get');
}
// admin page does not allow custom buttons in the navigation bar
echo '<div class="singlebutton">';
echo update_categories_button();
echo '</div></div>';
print_footer();
function print_category_edit($category, $displaylist, $parentslist, $depth=-1, $up=false, $down=false) {
/// Recursive function to print all the categories ready for editing
global $CFG, $USER;
static $str = '';
if (empty($str)) {
$str->edit = get_string('edit');
$str->delete = get_string('delete');
$str->moveup = get_string('moveup');
$str->movedown = get_string('movedown');
$str->edit = get_string('editthiscategory');
$str->hide = get_string('hide');
$str->show = get_string('show');
}
if ($category) {
if (!isset($category->context)) {
$category->context = get_context_instance(CONTEXT_COURSECAT, $category->id);
}
echo '<tr><td align="left" class="name">';
for ($i=0; $i<$depth;$i++) {
echo '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
}
$linkcss = $category->visible ? '' : ' class="dimmed" ';
echo '<a '.$linkcss.' title="'.$str->edit.'" '.
' href="category.php?id='.$category->id.'&amp;categoryedit=on&amp;sesskey='.sesskey().'">'.
format_string($category->name).'</a>';
echo '</td>';
echo '<td class="count">'.$category->coursecount.'</td>';
echo '<td class="icons">'; /// Print little icons
if (has_capability('moodle/category:update', $category->context)) {
echo '<a title="'.$str->edit.'" href="editcategory.php?id='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
' src="'.$CFG->pixpath.'/t/edit.gif" class="iconsmall" alt="'.$str->edit.'" /></a> ';
}
if (has_capability('moodle/category:delete', $category->context)) {
echo '<a title="'.$str->delete.'" href="index.php?delete='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
' src="'.$CFG->pixpath.'/t/delete.gif" class="iconsmall" alt="'.$str->delete.'" /></a> ';
}
if (has_capability('moodle/category:visibility', $category->context)) {
if (!empty($category->visible)) {
echo '<a title="'.$str->hide.'" href="index.php?hide='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
' src="'.$CFG->pixpath.'/t/hide.gif" class="iconsmall" alt="'.$str->hide.'" /></a> ';
} else {
echo '<a title="'.$str->show.'" href="index.php?show='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
' src="'.$CFG->pixpath.'/t/show.gif" class="iconsmall" alt="'.$str->show.'" /></a> ';
}
}
if ($up) {
echo '<a title="'.$str->moveup.'" href="index.php?moveup='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
' src="'.$CFG->pixpath.'/t/up.gif" class="iconsmall" alt="'.$str->moveup.'" /></a> ';
}
if ($down) {
echo '<a title="'.$str->movedown.'" href="index.php?movedown='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
' src="'.$CFG->pixpath.'/t/down.gif" class="iconsmall" alt="'.$str->movedown.'" /></a> ';
}
echo '</td>';
echo '<td align="left">';
$tempdisplaylist = $displaylist;
unset($tempdisplaylist[$category->id]);
foreach ($parentslist as $key => $parents) {
if (in_array($category->id, $parents)) {
unset($tempdisplaylist[$key]);
}
}
popup_form ("index.php?move=$category->id&amp;sesskey=$USER->sesskey&amp;moveto=", $tempdisplaylist, "moveform$category->id", $category->parent, '', '', '', false);
echo '</td>';
echo '</tr>';
} else {
$category->id = '0';
}
if ($categories = get_categories($category->id)) { // Print all the children recursively
$countcats = count($categories);
$count = 0;
$first = true;
$last = false;
foreach ($categories as $cat) {
$count++;
if ($count == $countcats) {
$last = true;
}
$up = $first ? false : true;
$down = $last ? false : true;
$first = false;
print_category_edit($cat, $displaylist, $parentslist, $depth+1, $up, $down);
}
}
}
function print_category_edit_header() {
global $CFG;
global $SITE;
if (has_capability('moodle/site:config', get_context_instance(CONTEXT_SYSTEM))) {
require_once($CFG->libdir.'/adminlib.php');
admin_externalpage_setup('coursemgmt');
admin_externalpage_print_header();
} else {
print_header("$SITE->shortname:". get_string('categories'), get_string('courses'),
build_navigation(array(array('name'=>get_string('categories'),'link'=>'','type'=>'misc'))), '', '', true, update_categories_button());
}
}
?>