blog/edit.php

   1 <?php //$Id$
   2
   3 require_once('../config.php');
   4 include_once('lib.php');
   5 include_once($CFG->dirroot.'/tag/lib.php');
   6
   7 $action   = required_param('action', PARAM_ALPHA);
   8 $id       = optional_param('id', 0, PARAM_INT);
   9 $confirm  = optional_param('confirm', 0, PARAM_BOOL);
  10 $courseid = optional_param('courseid', 0, PARAM_INT); // needed for user tab - does nothing here
  11
  12 require_login($courseid);
  13
  14 if (empty($CFG->bloglevel)) {
  15     error('Blogging is disabled!');
  16 }
  17
  18 if (isguest()) {
  19     print_error('noguestpost', 'blog');
  20 }
  21
  22 $sitecontext = get_context_instance(CONTEXT_SYSTEM);
  23 if (!has_capability('moodle/blog:create', $sitecontext) and !has_capability('moodle/blog:manageentries', $sitecontext)) {
  24     error('You can not post or edit blogs.');
  25 }
  26
  27 // Make sure that the person trying to edit have access right
  28 if ($id) {
  29     if (!$existing = get_record('post', 'id', $id)) {
  30         error('Wrong blog post id');
  31     }
  32
  33     if (!blog_user_can_edit_post($existing)) {
  34         print_error('notallowedtoedit', 'blog');
  35     }
  36     $userid    = $existing->userid;
  37     $returnurl = $CFG->wwwroot.'/blog/index.php?userid='.$existing->userid;
  38 } else {
  39     if (!has_capability('moodle/blog:create', $sitecontext)) {
  40         print_error('nopost', 'blog'); // manageentries is not enough for adding
  41     }
  42     $existing  = false;
  43     $userid    = $USER->id;
  44     $returnurl = 'index.php?userid='.$USER->id;
  45 }
  46 if (!empty($courseid)) {
  47     $returnurl .= '&amp;courseid='.$courseid;
  48 }
  49
  50
  51 $strblogs = get_string('blogs','blog');
  52
  53 if ($action=='delete'){
  54     if (!$existing) {
  55         error('Incorrect blog post id');
  56     }
  57     if (data_submitted() and $confirm and confirm_sesskey()) {
  58         do_delete($existing);
  59         redirect($returnurl);
  60     } else {
  61         $optionsyes = array('id'=>$id, 'action'=>'delete', 'confirm'=>1, 'sesskey'=>sesskey(), 'courseid'=>$courseid);
  62         $optionsno = array('userid'=>$existing->userid, 'courseid'=>$courseid);
  63         print_header("$SITE->shortname: $strblogs", $SITE->fullname);
  64         blog_print_entry($existing);
  65         echo '<br />';
  66         notice_yesno(get_string('blogdeleteconfirm', 'blog'), 'edit.php', 'index.php', $optionsyes, $optionsno, 'post', 'get');
  67         print_footer();
  68         die;
  69     }
  70 }
  71
  72 require_once('edit_form.php');
  73 $blogeditform = new blog_edit_form(null, compact('existing', 'sitecontext'));
  74
  75 if ($blogeditform->is_cancelled()){
  76     redirect($returnurl);
  77 } else if ($fromform = $blogeditform->get_data()){
  78     //save stuff in db
  79     switch ($action) {
  80         case 'add':
  81             do_add($fromform, $blogeditform);
  82         break;
  83
  84         case 'edit':
  85             if (!$existing) {
  86                 error('Incorrect blog post id');
  87             }
  88             do_edit($fromform, $blogeditform);
  89         break;
  90         default :
  91             error('Unknown action!');
  92     }
  93     redirect($returnurl);
  94 }
  95
  96
  97 // gui setup
  98 switch ($action) {
  99     case 'add':
 100         // prepare new empty form
 101         $post->publishstate = 'site';
 102         $strformheading = get_string('addnewentry', 'blog');
 103         $post->action       = $action;
 104     break;
 105
 106     case 'edit':
 107         if (!$existing) {
 108             error('Incorrect blog post id');
 109         }
 110         $post->id           = $existing->id;
 111         $post->subject      = $existing->subject;
 112         $post->summary      = $existing->summary;
 113         $post->publishstate = $existing->publishstate;
 114         $post->format       = $existing->format;
 115         $post->action       = $action;
 116         $strformheading = get_string('updateentrywithid', 'blog');
 117
 118         if ($itemptags = tag_get_tags_csv('post', $post->id, TAG_RETURN_TEXT, 'default')) {
 119             $post->ptags = $itemptags;
 120         }
 121
 122         if ($itemotags = tag_get_tags_array('post', $post->id, 'official')) {
 123             $post->otags = array_keys($itemotags);
 124         }
 125     break;
 126     default :
 127         error('Unknown action!');
 128 }
 129
 130 // done here in order to allow deleting of posts with wrong user id above
 131 if (!$user = get_record('user', 'id', $userid)) {
 132     error('Incorrect user id');
 133 }
 134 $navlinks = array();
 135 $navlinks[] = array('name' => fullname($user), 'link' => "$CFG->wwwroot/user/view.php?id=$userid", 'type' => 'misc');
 136 $navlinks[] = array('name' => $strblogs, 'link' => "$CFG->wwwroot/blog/index.php?userid=$userid", 'type' => 'misc');
 137 $navlinks[] = array('name' => $strformheading, 'link' => null, 'type' => 'misc');
 138 $navigation = build_navigation($navlinks);
 139
 140 print_header("$SITE->shortname: $strblogs", $SITE->fullname, $navigation,'','',true);
 141 $blogeditform->set_data($post);
 142 $blogeditform->display();
 143
 144
 145 print_footer();
 146
 147
 148 die;
 149
 150 /*****************************   edit.php functions  ***************************/
 151
 152 /*
 153 * Delete blog post from database
 154 */
 155 function do_delete($post) {
 156     global $returnurl;
 157
 158     $status = delete_records('post', 'id', $post->id);
 159     //$status = delete_records('blog_tag_instance', 'entryid', $post->id) and $status;
 160     tag_set('post', $post->id, array());
 161
 162     blog_delete_old_attachments($post);
 163
 164     add_to_log(SITEID, 'blog', 'delete', 'index.php?userid='. $post->userid, 'deleted blog entry with entry id# '. $post->id);
 165
 166     if (!$status) {
 167         error('Error occured while deleting post', $returnurl);
 168     }
 169 }
 170
 171 /**
 172  * Write a new blog entry into database
 173  */
 174 function do_add($post, $blogeditform) {
 175     global $CFG, $USER, $returnurl;
 176
 177     $post->module       = 'blog';
 178     $post->userid       = $USER->id;
 179     $post->lastmodified = time();
 180     $post->created      = time();
 181
 182     // Insert the new blog entry.
 183     if ($id = insert_record('post', $post)) {
 184         $post->id = $id;
 185         // add blog attachment
 186         $dir = blog_file_area_name($post);
 187         if ($blogeditform->save_files($dir) and $newfilename = $blogeditform->get_new_filename()) {
 188             set_field("post", "attachment", $newfilename, "id", $post->id);
 189         }
 190         add_tags_info($post->id);
 191         add_to_log(SITEID, 'blog', 'add', 'index.php?userid='.$post->userid.'&postid='.$post->id, $post->subject);
 192
 193     } else {
 194         error('There was an error adding this post in the database', $returnurl);
 195     }
 196
 197 }
 198
 199 /**
 200  * @param . $post argument is a reference to the post object which is used to store information for the form
 201  * @param . $bloginfo_arg argument is reference to a blogInfo object.
 202  * @todo complete documenting this function. enable trackback and pingback between entries on the same server
 203  */
 204 function do_edit($post, $blogeditform) {
 205
 206     global $CFG, $USER, $returnurl;
 207
 208
 209     $post->lastmodified = time();
 210
 211     $dir = blog_file_area_name($post);
 212     if ($blogeditform->save_files($dir) and $newfilename = $blogeditform->get_new_filename()) {
 213         $post->attachment = $newfilename;
 214     }
 215
 216     // update record
 217     if (update_record('post', $post)) {
 218         // delete all tags associated with this entry
 219
 220         //delete_records('blog_tag_instance', 'entryid', $post->id);
 221         //delete_records('tag_instance', 'itemid', $post->id, 'itemtype', 'blog');
 222         //untag_an_item('post', $post->id);
 223         // add them back
 224         add_tags_info($post->id);
 225
 226         add_to_log(SITEID, 'blog', 'update', 'index.php?userid='.$USER->id.'&postid='.$post->id, $post->subject);
 227
 228     } else {
 229         error('There was an error updating this post in the database', $returnurl);
 230     }
 231 }
 232
 233 /**
 234  * function to attach tags into a post
 235  * @param int postid - id of the blog
 236  */
 237 function add_tags_info($postid) {
 238
 239     $tags = array();
 240     if ($otags = optional_param('otags', '', PARAM_INT)) {
 241         foreach ($otags as $tagid) {
 242             // TODO : make this use the tag name in the form
 243             if ($tag = tag_get('id', $tagid)) {
 244                 $tags[] = $tag->name;
 245             }
 246         }
 247     }
 248
 249     $manual_tags = optional_param('ptags', '', PARAM_NOTAGS);
 250     $tags = array_merge($tags, explode(',', $manual_tags));
 251
 252     tag_set('post', $postid, $tags);
 253 }
 254 ?>