MDL-46500 filepicker: prevent error when element does not exist

lib/form/filemanager.js

@@ -88,6 +88,9 @@ M.form_filemanager.init = function(Y, options) {
             }
             // prepare filemanager for drag-and-drop upload
             this.filemanager = Y.one('#filemanager-'+options.client_id);
+            if (!this.filemanager) {
+                return;
+            }
             if (this.filemanager.hasClass('filemanager-container') || !this.filemanager.one('.filemanager-container')) {
                 this.dndcontainer = this.filemanager;
             } else  {
@@ -424,6 +427,9 @@ M.form_filemanager.init = function(Y, options) {
 
         print_path: function() {
             var p = this.options.path;
+            if (!this.pathbar) {
+                return;
+            }
             this.pathbar.setContent('').addClass('empty');
             if (p && p.length!=0 && this.viewmode != 2) {
                 for(var i = 0; i < p.length; i++) {
@@ -1043,6 +1049,9 @@ M.form_filemanager.init = function(Y, options) {
     // finally init everything needed
     // hide loading picture, display filemanager interface
     var filemanager = Y.one('#filemanager-'+options.client_id);
+    if (!filemanager) {
+       return;
+    }
     filemanager.removeClass('fm-loading').addClass('fm-loaded');
 
     var manager = new FileManagerHelper(options);

mod/data/edit.php

@@ -290,10 +290,12 @@ if ($data->addtemplate){
     ///then we generate strings to replace
     foreach ($possiblefields as $eachfield){
         $field = data_get_field($eachfield, $data);
-        $patterns[]="[[".$field->field->name."]]";
-        $replacements[] = $field->display_add_field($rid);
-        $patterns[]="[[".$field->field->name."#id]]";
-        $replacements[] = 'field_'.$field->field->id;
+        if (strpos($data->addtemplate, "[[".$field->field->name."]]") !== false) {
+            $patterns[] = "[[".$field->field->name."]]";
+            $replacements[] = $field->display_add_field($rid);
+            $patterns[] = "[[".$field->field->name."#id]]";
+            $replacements[] = 'field_'.$field->field->id;
+        }
     }
     $newtext = str_ireplace($patterns, $replacements, $data->{$mode});