course/index.php

   1 <?php
   2
   3 // This file is part of Moodle - http://moodle.org/
   4 //
   5 // Moodle is free software: you can redistribute it and/or modify
   6 // it under the terms of the GNU General Public License as published by
   7 // the Free Software Foundation, either version 3 of the License, or
   8 // (at your option) any later version.
   9 //
  10 // Moodle is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU General Public License
  16 // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  17
  18 /**
  19  * For most people, just lists the course categories
  20  * Allows the admin to create, delete and rename course categories
  21  *
  22  * @copyright 1999 Martin Dougiamas  http://dougiamas.com
  23  * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  24  * @package course
  25  */
  26
  27 require_once("../config.php");
  28 require_once("lib.php");
  29
  30 $categoryedit = optional_param('categoryedit', -1,PARAM_BOOL);
  31 $delete   = optional_param('delete',0,PARAM_INT);
  32 $hide     = optional_param('hide',0,PARAM_INT);
  33 $show     = optional_param('show',0,PARAM_INT);
  34 $move     = optional_param('move',0,PARAM_INT);
  35 $moveto   = optional_param('moveto',-1,PARAM_INT);
  36 $moveup   = optional_param('moveup',0,PARAM_INT);
  37 $movedown = optional_param('movedown',0,PARAM_INT);
  38
  39 $site = get_site();
  40
  41 $systemcontext = get_context_instance(CONTEXT_SYSTEM);
  42
  43 $PAGE->set_url('/course/index.php');
  44 $PAGE->set_context($systemcontext);
  45 $PAGE->set_pagelayout('admin');
  46
  47 if (can_edit_in_category()) {
  48     if ($categoryedit !== -1) {
  49         $USER->editing = $categoryedit;
  50     }
  51     require_login();
  52     $adminediting = $PAGE->user_is_editing();
  53 } else {
  54     if ($CFG->forcelogin) {
  55         require_login();
  56     }
  57     $adminediting = false;
  58 }
  59
  60 $stradministration = get_string('administration');
  61 $strcategories = get_string('categories');
  62 $strcategory = get_string('category');
  63 $strcourses = get_string('courses');
  64 $stredit = get_string('edit');
  65 $strdelete = get_string('delete');
  66 $straction = get_string('action');
  67 $strfulllistofcourses = get_string('fulllistofcourses');
  68
  69
  70 /// Unless it's an editing admin, just print the regular listing of courses/categories
  71 if (!$adminediting) {
  72
  73 /// Print form for creating new categories
  74     $countcategories = $DB->count_records('course_categories');
  75
  76     if ($countcategories > 1 || ($countcategories == 1 && $DB->count_records('course') > 200)) {
  77         $strcourses = get_string('courses');
  78         $strcategories = get_string('categories');
  79
  80         $PAGE->navbar->add($strcategories);
  81         $PAGE->set_title("$site->shortname: $strcategories");
  82         $PAGE->set_heading($COURSE->fullname);
  83         $PAGE->set_button(update_category_button());
  84         echo $OUTPUT->header();
  85         echo $OUTPUT->heading($strcategories);
  86         echo $OUTPUT->skip_link_target();
  87         echo $OUTPUT->box_start('categorybox');
  88         print_whole_category_list();
  89         echo $OUTPUT->box_end();
  90         print_course_search();
  91     } else {
  92         $PAGE->navbar->add($strfulllistofcourses);
  93         $PAGE->set_title("$site->shortname: $strfulllistofcourses");
  94         $PAGE->set_heading($COURSE->fullname);
  95         $PAGE->set_button(update_category_button());
  96         echo $OUTPUT->header();
  97         echo $OUTPUT->skip_link_target();
  98         echo $OUTPUT->box_start('courseboxes');
  99         print_courses(0);
 100         echo $OUTPUT->box_end();
 101     }
 102
 103     echo $OUTPUT->container_start('buttons');
 104     if (has_capability('moodle/course:create', $systemcontext)) {
 105     /// Print link to create a new course
 106     /// Get the 1st available category
 107         $options = array('category' => $CFG->defaultrequestcategory);
 108         echo $OUTPUT->single_button(new moodle_url('edit.php', $options), get_string('addnewcourse'), 'get');
 109     }
 110     print_course_request_buttons($systemcontext);
 111     echo $OUTPUT->container_end();
 112     echo $OUTPUT->footer();
 113     exit;
 114 }
 115 /// Everything else is editing on mode.
 116 require_once($CFG->libdir.'/adminlib.php');
 117 admin_externalpage_setup('coursemgmt');
 118
 119 /// Delete a category.
 120 if (!empty($delete) and confirm_sesskey()) {
 121     if (!$deletecat = $DB->get_record('course_categories', array('id'=>$delete))) {
 122         print_error('invalidcategoryid');
 123     }
 124     $context = get_context_instance(CONTEXT_COURSECAT, $delete);
 125     require_capability('moodle/category:manage', $context);
 126     require_capability('moodle/category:manage', get_category_or_system_context($deletecat->parent));
 127
 128     $heading = get_string('deletecategory', 'moodle', format_string($deletecat->name, true, array('context' => $context)));
 129     require_once('delete_category_form.php');
 130     $mform = new delete_category_form(null, $deletecat);
 131     $mform->set_data(array('delete'=>$delete));
 132
 133     if ($mform->is_cancelled()) {
 134         redirect('index.php');
 135
 136     } else if (!$data= $mform->get_data()) {
 137         require_once($CFG->libdir . '/questionlib.php');
 138         echo $OUTPUT->header();
 139         echo $OUTPUT->heading($heading);
 140         $mform->display();
 141         echo $OUTPUT->footer();
 142         exit();
 143     }
 144
 145     echo $OUTPUT->header();
 146     echo $OUTPUT->heading($heading);
 147
 148     if ($data->fulldelete) {
 149         $deletedcourses = category_delete_full($deletecat, true);
 150
 151         foreach($deletedcourses as $course) {
 152             echo $OUTPUT->notification(get_string('coursedeleted', '', $course->shortname), 'notifysuccess');
 153         }
 154         echo $OUTPUT->notification(get_string('coursecategorydeleted', '', format_string($deletecat->name, true, array('context' => $context))), 'notifysuccess');
 155
 156     } else {
 157         category_delete_move($deletecat, $data->newparent, true);
 158     }
 159
 160     // If we deleted $CFG->defaultrequestcategory, make it point somewhere else.
 161     if ($delete == $CFG->defaultrequestcategory) {
 162         set_config('defaultrequestcategory', $DB->get_field('course_categories', 'MIN(id)', array('parent'=>0)));
 163     }
 164
 165     echo $OUTPUT->continue_button('index.php');
 166
 167     echo $OUTPUT->footer();
 168     die;
 169 }
 170
 171 /// Create a default category if necessary
 172 if (!$categories = get_categories()) {    /// No category yet!
 173     // Try and make one
 174     $tempcat = new stdClass();
 175     $tempcat->name = get_string('miscellaneous');
 176     $tempcat->id = $DB->insert_record('course_categories', $tempcat);
 177     $tempcat->context = get_context_instance(CONTEXT_COURSECAT, $tempcat->id);
 178     mark_context_dirty('/'.SYSCONTEXTID);
 179     fix_course_sortorder(); // Required to build course_categories.depth and .path.
 180 }
 181
 182 /// Move a category to a new parent if required
 183 if (!empty($move) and ($moveto >= 0) and confirm_sesskey()) {
 184     if ($cattomove = $DB->get_record('course_categories', array('id'=>$move))) {
 185         require_capability('moodle/category:manage', get_category_or_system_context($cattomove->parent));
 186         if ($cattomove->parent != $moveto) {
 187             $newparent = $DB->get_record('course_categories', array('id'=>$moveto));
 188             require_capability('moodle/category:manage', get_category_or_system_context($moveto));
 189             move_category($cattomove, $newparent);
 190         }
 191     }
 192 }
 193
 194 /// Hide or show a category
 195 if ($hide and confirm_sesskey()) {
 196     if ($tempcat = $DB->get_record('course_categories', array('id'=>$hide))) {
 197         require_capability('moodle/category:manage', get_category_or_system_context($tempcat->parent));
 198         if ($tempcat->visible == 1) {
 199             course_category_hide($tempcat);
 200         }
 201     }
 202 } else if ($show and confirm_sesskey()) {
 203     if ($tempcat = $DB->get_record('course_categories', array('id'=>$show))) {
 204         require_capability('moodle/category:manage', get_category_or_system_context($tempcat->parent));
 205         if ($tempcat->visible == 0) {
 206             course_category_show($tempcat);
 207         }
 208     }
 209 }
 210
 211 /// Move a category up or down
 212 if ((!empty($moveup) or !empty($movedown)) and confirm_sesskey()) {
 213     fix_course_sortorder();
 214     $swapcategory = NULL;
 215
 216     if (!empty($moveup)) {
 217         require_capability('moodle/category:manage', get_context_instance(CONTEXT_COURSECAT, $moveup));
 218         if ($movecategory = $DB->get_record('course_categories', array('id'=>$moveup))) {
 219             if ($swapcategory = $DB->get_records_select('course_categories', "sortorder<? AND parent=?", array($movecategory->sortorder, $movecategory->parent), 'sortorder DESC', '*', 0, 1)) {
 220                 $swapcategory = reset($swapcategory);
 221             }
 222         }
 223     } else {
 224         require_capability('moodle/category:manage', get_context_instance(CONTEXT_COURSECAT, $movedown));
 225         if ($movecategory = $DB->get_record('course_categories', array('id'=>$movedown))) {
 226             if ($swapcategory = $DB->get_records_select('course_categories', "sortorder>? AND parent=?", array($movecategory->sortorder, $movecategory->parent), 'sortorder ASC', '*', 0, 1)) {
 227                 $swapcategory = reset($swapcategory);
 228             }
 229         }
 230     }
 231     if ($swapcategory and $movecategory) {
 232         $DB->set_field('course_categories', 'sortorder', $swapcategory->sortorder, array('id'=>$movecategory->id));
 233         $DB->set_field('course_categories', 'sortorder', $movecategory->sortorder, array('id'=>$swapcategory->id));
 234     }
 235
 236     // finally reorder courses
 237     fix_course_sortorder();
 238 }
 239
 240 /// Print headings
 241 echo $OUTPUT->header();
 242 echo $OUTPUT->heading($strcategories);
 243
 244 /// Print out the categories with all the knobs
 245 $strcategories = get_string('categories');
 246 $strcourses = get_string('courses');
 247 $strmovecategoryto = get_string('movecategoryto');
 248 $stredit = get_string('edit');
 249
 250 $displaylist = array();
 251 $parentlist = array();
 252
 253 $displaylist[0] = get_string('top');
 254 make_categories_list($displaylist, $parentlist);
 255
 256 echo '<table class="generalbox editcourse boxaligncenter"><tr class="header">';
 257 echo '<th class="header" scope="col">'.$strcategories.'</th>';
 258 echo '<th class="header" scope="col">'.$strcourses.'</th>';
 259 echo '<th class="header" scope="col">'.$stredit.'</th>';
 260 echo '<th class="header" scope="col">'.$strmovecategoryto.'</th>';
 261 echo '</tr>';
 262
 263 print_category_edit(NULL, $displaylist, $parentlist);
 264 echo '</table>';
 265
 266 echo '<div class="buttons">';
 267 if (has_capability('moodle/course:create', $systemcontext)) {
 268     // print create course link to first category
 269     $options = array('category' => $CFG->defaultrequestcategory);
 270     $options['returnto'] = 'topcat';
 271     echo $OUTPUT->single_button(new moodle_url('edit.php', $options), get_string('addnewcourse'), 'get');
 272 }
 273
 274 // Print button for creating new categories
 275 if (has_capability('moodle/category:manage', $systemcontext)) {
 276     $options = array('parent'=>0);
 277     echo $OUTPUT->single_button(new moodle_url('editcategory.php', $options), get_string('addnewcategory'), 'get');
 278 }
 279
 280 print_course_request_buttons($systemcontext);
 281 echo '</div>';
 282
 283 echo $OUTPUT->footer();
 284
 285 function print_category_edit($category, $displaylist, $parentslist, $depth=-1, $up=false, $down=false) {
 286 /// Recursive function to print all the categories ready for editing
 287
 288     global $CFG, $USER, $OUTPUT;
 289
 290     static $str = NULL;
 291
 292     if (is_null($str)) {
 293         $str = new stdClass;
 294         $str->edit     = get_string('edit');
 295         $str->delete   = get_string('delete');
 296         $str->moveup   = get_string('moveup');
 297         $str->movedown = get_string('movedown');
 298         $str->edit     = get_string('editthiscategory');
 299         $str->hide     = get_string('hide');
 300         $str->show     = get_string('show');
 301         $str->cohorts  = get_string('cohorts', 'cohort');
 302         $str->spacer = $OUTPUT->spacer().' ';
 303     }
 304
 305     if (!empty($category)) {
 306
 307         if (!isset($category->context)) {
 308             $category->context = get_context_instance(CONTEXT_COURSECAT, $category->id);
 309         }
 310
 311         echo '<tr><td align="left" class="name">';
 312         for ($i=0; $i<$depth;$i++) {
 313             echo '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;';
 314         }
 315         $linkcss = $category->visible ? '' : ' class="dimmed" ';
 316         echo '<a '.$linkcss.' title="'.$str->edit.'" '.
 317              ' href="category.php?id='.$category->id.'&amp;categoryedit=on&amp;sesskey='.sesskey().'">'.
 318              format_string($category->name, true, array('context' => $category->context)).'</a>';
 319         echo '</td>';
 320
 321         echo '<td class="count">'.$category->coursecount.'</td>';
 322
 323         echo '<td class="icons">';    /// Print little icons
 324
 325         if (has_capability('moodle/category:manage', $category->context)) {
 326             echo '<a title="'.$str->edit.'" href="editcategory.php?id='.$category->id.'"><img'.
 327                  ' src="'.$OUTPUT->pix_url('t/edit') . '" class="iconsmall" alt="'.$str->edit.'" /></a> ';
 328
 329             echo '<a title="'.$str->delete.'" href="index.php?delete='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 330                  ' src="'.$OUTPUT->pix_url('t/delete') . '" class="iconsmall" alt="'.$str->delete.'" /></a> ';
 331
 332             if (!empty($category->visible)) {
 333                 echo '<a title="'.$str->hide.'" href="index.php?hide='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 334                      ' src="'.$OUTPUT->pix_url('t/hide') . '" class="iconsmall" alt="'.$str->hide.'" /></a> ';
 335             } else {
 336                 echo '<a title="'.$str->show.'" href="index.php?show='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 337                      ' src="'.$OUTPUT->pix_url('t/show') . '" class="iconsmall" alt="'.$str->show.'" /></a> ';
 338             }
 339
 340             if (has_capability('moodle/cohort:manage', $category->context) or has_capability('moodle/cohort:view', $category->context)) {
 341                 echo '<a title="'.$str->cohorts.'" href="'.$CFG->wwwroot.'/cohort/index.php?contextid='.$category->context->id.'"><img'.
 342                      ' src="'.$OUTPUT->pix_url('i/cohort') . '" class="iconsmall" alt="'.$str->cohorts.'" /></a> ';
 343             }
 344
 345             if ($up) {
 346                 echo '<a title="'.$str->moveup.'" href="index.php?moveup='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 347                      ' src="'.$OUTPUT->pix_url('t/up') . '" class="iconsmall" alt="'.$str->moveup.'" /></a> ';
 348             } else {
 349                 echo $str->spacer;
 350             }
 351             if ($down) {
 352                 echo '<a title="'.$str->movedown.'" href="index.php?movedown='.$category->id.'&amp;sesskey='.sesskey().'"><img'.
 353                      ' src="'.$OUTPUT->pix_url('t/down') . '" class="iconsmall" alt="'.$str->movedown.'" /></a> ';
 354             } else {
 355                 echo $str->spacer;
 356             }
 357         }
 358         echo '</td>';
 359
 360         echo '<td align="left">';
 361         if (has_capability('moodle/category:manage', $category->context)) {
 362             $tempdisplaylist = $displaylist;
 363             unset($tempdisplaylist[$category->id]);
 364             foreach ($parentslist as $key => $parents) {
 365                 if (in_array($category->id, $parents)) {
 366                     unset($tempdisplaylist[$key]);
 367                 }
 368             }
 369             $popupurl = new moodle_url("index.php?move=$category->id&sesskey=".sesskey());
 370             $select = new single_select($popupurl, 'moveto', $tempdisplaylist, $category->parent, null, "moveform$category->id");
 371             echo $OUTPUT->render($select);
 372         }
 373         echo '</td>';
 374         echo '</tr>';
 375     } else {
 376         $category = new stdClass();
 377         $category->id = '0';
 378     }
 379
 380     if ($categories = get_categories($category->id)) {   // Print all the children recursively
 381         $countcats = count($categories);
 382         $count = 0;
 383         $first = true;
 384         $last = false;
 385         foreach ($categories as $cat) {
 386             $count++;
 387             if ($count == $countcats) {
 388                 $last = true;
 389             }
 390             $up = $first ? false : true;
 391             $down = $last ? false : true;
 392             $first = false;
 393
 394             print_category_edit($cat, $displaylist, $parentslist, $depth+1, $up, $down);
 395         }
 396     }
 397 }