FIX: Editing tags was double rendering

app/assets/javascripts/discourse/components/tag-chooser.js.es6

@@ -8,10 +8,17 @@ export default Ember.TextField.extend({
   classNameBindings: [':tag-chooser'],
   attributeBindings: ['tabIndex', 'placeholderKey', 'categoryId'],
 
-  _initValue: function() {
+  init() {
+    this._super();
     const tags = this.get('tags') || [];
     this.set('value', tags.join(", "));
-  }.on('init'),
+
+    if (this.get('allowCreate') !== false) {
+      this.set('allowCreate', this.site.get('can_create_tag'));
+    }
+
+    this.set('termMatchesForbidden', false);
+  },
 
   _valueChanged: function() {
     const tags = this.get('value').split(',').map(v => v.trim()).reject(v => v.length === 0).uniq();
@@ -32,18 +39,13 @@ export default Ember.TextField.extend({
     }
   }.observes('tags'),
 
-  _initializeTags: function() {
-    const site = this.site,
-          self = this,
-          filterRegexp = new RegExp(this.site.tags_filter_regexp, "g");
+  didInsertElement() {
+    this._super();
 
-    var limit = this.siteSettings.max_tags_per_topic;
+    const self = this;
+    const filterRegexp = new RegExp(this.site.tags_filter_regexp, "g");
 
-    if (this.get('allowCreate') !== false) {
-      this.set('allowCreate', site.get('can_create_tag'));
-    }
-
-    this.set('termMatchesForbidden', false);
+    let limit = this.siteSettings.max_tags_per_topic;
 
     if (this.get('unlimitedTagCount')) {
       limit = null;
@@ -77,7 +79,7 @@ export default Ember.TextField.extend({
 
         callback(data);
       },
-      createSearchChoice: function(term, data) {
+      createSearchChoice(term, data) {
         term = term.replace(filterRegexp, '').trim().toLowerCase();
 
         // No empty terms, make sure the user has permission to create the tag
@@ -89,14 +91,14 @@ export default Ember.TextField.extend({
           return { id: term, text: term };
         }
       },
-      createSearchChoicePosition: function(list, item) {
+      createSearchChoicePosition(list, item) {
         // Search term goes on the bottom
         list.push(item);
       },
-      formatSelection: function (data) {
+      formatSelection(data) {
         return data ? renderTag(this.text(data)) : undefined;
       },
-      formatSelectionCssClass: function(){
+      formatSelectionCssClass() {
         return "discourse-tag-select2";
       },
       formatResult: formatTag,
@@ -127,10 +129,11 @@ export default Ember.TextField.extend({
         }
       },
     });
-  }.on('didInsertElement'),
+  },
 
-  _destroyTags: function() {
+  willDestroyElement() {
+    this._super();
     this.$().select2('destroy');
-  }.on('willDestroyElement')
+  }
 
 });