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Differences Between: [Versions 310 and 400] [Versions 310 and 401] [Versions 310 and 402] [Versions 310 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  
  18  /**
  19   * @package    core_tag
  20   * @category   tag
  21   * @copyright  2007 Luiz Cruz <luiz.laydner@gmail.com>
  22   * @license    http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
  23   */
  24  
  25  require_once('../config.php');
  26  require_once($CFG->dirroot . '/lib/weblib.php');
  27  require_once($CFG->dirroot . '/blog/lib.php');
  28  
  29  require_login();
  30  
  31  if (empty($CFG->usetags)) {
  32      print_error('tagsaredisabled', 'tag');
  33  }
  34  
  35  $tagid       = optional_param('id', 0, PARAM_INT); // tag id
  36  $tagname     = optional_param('tag', '', PARAM_TAG); // tag
  37  $tagareaid   = optional_param('ta', 0, PARAM_INT); // Tag area id.
  38  $exclusivemode = optional_param('excl', 0, PARAM_BOOL); // Exclusive mode (show entities in one tag area only).
  39  $page        = optional_param('page', 0, PARAM_INT); // Page to display.
  40  $fromctx     = optional_param('from', null, PARAM_INT);
  41  $ctx         = optional_param('ctx', null, PARAM_INT);
  42  $rec         = optional_param('rec', 1, PARAM_INT);
  43  
  44  $edit        = optional_param('edit', -1, PARAM_BOOL);
  45  
  46  $systemcontext   = context_system::instance();
  47  
  48  if ($tagname) {
  49      $tagcollid = optional_param('tc', 0, PARAM_INT);
  50      if (!$tagcollid) {
  51          // Tag name specified but tag collection was not. Try to guess it.
  52          $tags = core_tag_tag::guess_by_name($tagname, '*');
  53          if (count($tags) > 1) {
  54              // This tag was found in more than one collection, redirect to search.
  55              redirect(new moodle_url('/tag/search.php', array('query' => $tagname)));
  56          } else if (count($tags) == 1) {
  57              $tag = reset($tags);
  58          }
  59      } else {
  60          if (!$tag = core_tag_tag::get_by_name($tagcollid, $tagname, '*')) {
  61              redirect(new moodle_url('/tag/search.php', array('tc' => $tagcollid, 'query' => $tagname)));
  62          }
  63      }
  64  } else if ($tagid) {
  65      $tag = core_tag_tag::get($tagid, '*');
  66  }
  67  unset($tagid);
  68  if (empty($tag)) {
  69      redirect(new moodle_url('/tag/search.php'));
  70  }
  71  
  72  if ($ctx && ($context = context::instance_by_id($ctx, IGNORE_MISSING)) && $context->contextlevel >= CONTEXT_COURSE) {
  73      list($context, $course, $cm) = get_context_info_array($context->id);
  74      require_login($course, false, $cm, false, true);
  75  } else {
  76      $PAGE->set_context($systemcontext);
  77  }
  78  
  79  $tagcollid = $tag->tagcollid;
  80  
  81  $PAGE->set_url($tag->get_view_url($exclusivemode, $fromctx, $ctx, $rec));
  82  $PAGE->set_subpage($tag->id);
  83  $tagnode = $PAGE->navigation->find('tags', null);
  84  $tagnode->make_active();
  85  $PAGE->set_pagelayout('standard');
  86  $PAGE->set_blocks_editing_capability('moodle/tag:editblocks');
  87  
  88  $buttons = '';
  89  if (has_capability('moodle/tag:manage', context_system::instance())) {
  90      $buttons .= $OUTPUT->single_button(new moodle_url('/tag/manage.php'),
  91              get_string('managetags', 'tag'), 'GET');
  92  }
  93  if ($PAGE->user_allowed_editing()) {
  94      if ($edit != -1) {
  95          $USER->editing = $edit;
  96      }
  97      $buttons .= $OUTPUT->edit_button(clone($PAGE->url));
  98  }
  99  
 100  $PAGE->navbar->add($tagname);
 101  $PAGE->set_title(get_string('tag', 'tag') .' - '. $tag->get_display_name());
 102  $PAGE->set_heading($COURSE->fullname);
 103  $PAGE->set_button($buttons);
 104  
 105  // Find all areas in this collection and their items tagged with this tag.
 106  $tagareas = core_tag_collection::get_areas($tagcollid);
 107  if ($tagareaid) {
 108      $tagareas = array_intersect_key($tagareas, array($tagareaid => 1));
 109  }
 110  if (!$tagareaid && count($tagareas) == 1) {
 111      // Automatically set "exclusive" mode for tag collection with one tag area only.
 112      $exclusivemode = 1;
 113  }
 114  $entities = array();
 115  foreach ($tagareas as $ta) {
 116      $entities[] = $tag->get_tag_index($ta, $exclusivemode, $fromctx, $ctx, $rec, $page);
 117  }
 118  $entities = array_filter($entities);
 119  
 120  $tagrenderer = $PAGE->get_renderer('core', 'tag');
 121  $pagecontents = $tagrenderer->tag_index_page($tag, array_filter($entities), $tagareaid,
 122          $exclusivemode, $fromctx, $ctx, $rec, $page);
 123  
 124  echo $OUTPUT->header();
 125  echo $pagecontents;
 126  echo $OUTPUT->footer();