e999edd9d69e5c20c471559fa1ed405d19461234
[moodle.git] / question / category.php
1 <?php // $Id$
2 /**
3  * Allows a teacher to create, edit and delete categories
4  *
5  * @author Martin Dougiamas and many others.
6  *         {@link http://moodle.org}
7  * @license http://www.gnu.org/copyleft/gpl.html GNU Public License
8  * @package questionbank
9  */
11     require_once("../config.php");
12     require_once($CFG->dirroot."/question/editlib.php");
13     require_once($CFG->dirroot."/question/category_class.php");
17     list($thispageurl, $contexts, $cmid, $cm, $module, $pagevars) = question_edit_setup('categories');
19     // get values from form for actions on this page
20     $param = new stdClass();
23     $param->moveup = optional_param('moveup', 0, PARAM_INT);
24     $param->movedown = optional_param('movedown', 0, PARAM_INT);
25     $param->moveupcontext = optional_param('moveupcontext', 0, PARAM_INT);
26     $param->movedowncontext = optional_param('movedowncontext', 0, PARAM_INT);
27     $param->tocontext = optional_param('tocontext', 0, PARAM_INT);
28     $param->left = optional_param('left', 0, PARAM_INT);
29     $param->right = optional_param('right', 0, PARAM_INT);
30     $param->delete = optional_param('delete', 0, PARAM_INT);
31     $param->confirm = optional_param('confirm', 0, PARAM_INT);
32     $param->cancel = optional_param('cancel', '', PARAM_ALPHA);
33     $param->move = optional_param('move', 0, PARAM_INT);
34     $param->moveto = optional_param('moveto', 0, PARAM_INT);
35     $param->edit = optional_param('edit', 0, PARAM_INT);
37     $qcobject = new question_category_object($pagevars['cpage'], $thispageurl, $contexts->having_one_edit_tab_cap('categories'), $param->edit, $pagevars['cat'], $param->delete,
38                                 $contexts->having_cap('moodle/question:add'));
40     $streditingcategories = get_string('editcategories', 'quiz');
41     if ($param->left || $param->right || $param->moveup || $param->movedown|| $param->moveupcontext || $param->movedowncontext){
42         confirm_sesskey();
43         foreach ($qcobject->editlists as $list){
44             //processing of these actions is handled in the method where appropriate and page redirects.
45             $list->process_actions($param->left, $param->right, $param->moveup, $param->movedown,
46                                     $param->moveupcontext, $param->movedowncontext, $param->tocontext);
47         }
48     }
49     if ($param->delete && ($questionstomove = $DB->count_records("question", array("category" => $param->delete)))){
50         if (!$category = $DB->get_record("question_categories", array("id" => $param->delete))) {  // security
51             print_error('nocate', 'question', $thispageurl->out(), $param->delete);
52         }
53         $categorycontext = get_context_instance_by_id($category->contextid);
54         $qcobject->moveform = new question_move_form($thispageurl,
55                     array('contexts'=>array($categorycontext), 'currentcat'=>$param->delete));
56         if ($qcobject->moveform->is_cancelled()){
57             redirect($thispageurl);
58         }  elseif ($formdata = $qcobject->moveform->get_data()) {
59             /// 'confirm' is the category to move existing questions to
60             list($tocategoryid, $tocontextid) = explode(',', $formdata->category);
61             $qcobject->move_questions_and_delete_category($formdata->delete, $tocategoryid);
62             $thispageurl->remove_params('cat', 'category');
63             redirect($thispageurl);
64         }
65     } else {
66         $questionstomove = 0;
67     }
68     if ($qcobject->catform->is_cancelled()) {
69         redirect($thispageurl);
70     } else if ($catformdata = $qcobject->catform->get_data()) {
71         if (!$catformdata->id) {//new category
72             $qcobject->add_category($catformdata->parent, $catformdata->name, $catformdata->info);
73         } else {
74             $qcobject->update_category($catformdata->id, $catformdata->parent, $catformdata->name, $catformdata->info);
75         }
76         redirect($thispageurl);
77     } else if ((!empty($param->delete) and (!$questionstomove) and confirm_sesskey())) {
78         $qcobject->delete_category($param->delete);//delete the category now no questions to move
79         $thispageurl->remove_params('cat', 'category');
80         redirect($thispageurl);
81     }
82     $navlinks = array();
83     if ($cm!==null) {
84         // Page header
85         $strupdatemodule = has_capability('moodle/course:manageactivities', $contexts->lowest())
86             ? update_module_button($cm->id, $COURSE->id, get_string('modulename', $cm->modname))
87             : "";
88         $navlinks[] = array('name' => get_string('modulenameplural', $cm->modname),
89                             'link' => "$CFG->wwwroot/mod/{$cm->modname}/index.php?id=$COURSE->id",
90                             'type' => 'activity');
91         $navlinks[] = array('name' => format_string($module->name),
92                             'link' => "$CFG->wwwroot/mod/{$cm->modname}/view.php?id={$cm->id}",
93                             'type' => 'title');
94     } else {
95         // Print basic page layout.
96         $strupdatemodule = '';
97     }
99     if (!$param->edit){
100         $navlinks[] = array('name' => $streditingcategories, 'link' => '', 'type' => 'title');
101     } else {
102         $navlinks[] = array('name' => $streditingcategories, 'link' => $thispageurl->out(), 'type' => 'title');
103         $navlinks[] = array('name' => get_string('editingcategory', 'question'), 'link' => '', 'type' => 'title');
104     }
106     $navigation = build_navigation($navlinks);
107     print_header_simple($streditingcategories, '', $navigation, "", "", true, $strupdatemodule);
109     // print tabs
110     if ($cm!==null) {
111         $currenttab = 'edit';
112         $mode = 'categories';
113         ${$cm->modname} = $module;
114         include($CFG->dirroot."/mod/{$cm->modname}/tabs.php");
115     } else {
116         $currenttab = 'categories';
117         $context = $contexts->lowest();
118         include('tabs.php');
119     }
121     // display UI
122     if (!empty($param->edit)) {
123         $qcobject->edit_single_category($param->edit);
124     } else if ($questionstomove){
125         $qcobject->display_move_form($questionstomove, $category);
126     } else {
127         // display the user interface
128         $qcobject->display_user_interface();
129     }
130     print_footer($COURSE);
131 ?>