UX: hide support categories from selectors

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

@@ -21,6 +21,7 @@ export default ComboboxView.extend({
     return categories.filter(c => {
       if (scopedCategoryId && c.get('id') !== scopedCategoryId && c.get('parent_category_id') !== scopedCategoryId) { return false; }
       if (c.get('isUncategorizedCategory')) { return false; }
+      if (c.get('is_support')) { return false; }
       return c.get('permission') === Discourse.PermissionType.FULL;
     });
   },

app/assets/javascripts/discourse/controllers/topic.js.es6

@@ -78,6 +78,13 @@ export default Ember.Controller.extend(SelectedPostsCount, BufferedContent, {
     this.set('selectedReplies', []);
   }.on('init'),
 
+  @computed("model.isPrivateMessage", "model.category_id")
+  showCategoryChooser(isPrivateMessage, categoryId) {
+    const category = Discourse.Category.findById(categoryId);
+    const isSupport = category && category.get("is_support");
+    return !isPrivateMessage && !isSupport;
+  },
+
   actions: {
     showTopicAdminMenu() {
       this.set('adminMenuVisible', true);

app/assets/javascripts/discourse/models/composer.js.es6

@@ -67,11 +67,13 @@ const Composer = RestModel.extend({
   creatingPrivateMessage: Em.computed.equal('action', PRIVATE_MESSAGE),
   notCreatingPrivateMessage: Em.computed.not('creatingPrivateMessage'),
 
-  showCategoryChooser: function(){
+  @computed("privateMessage", "archetype.hasOptions", "categoryId")
+  showCategoryChooser(isPrivateMessage, hasOptions, categoryId) {
     const manyCategories = Discourse.Category.list().length > 1;
-    const hasOptions = this.get('archetype.hasOptions');
-    return !this.get('privateMessage') && (hasOptions || manyCategories);
-  }.property('privateMessage'),
+    const category = Discourse.Category.findById(categoryId);
+    const isSupport = category && category.get("is_support");
+    return !isPrivateMessage && !isSupport && (hasOptions || manyCategories);
+  },
 
   privateMessage: function(){
     return this.get('creatingPrivateMessage') || this.get('topic.archetype') === 'private_message';

app/assets/javascripts/discourse/templates/topic.hbs

@@ -15,9 +15,9 @@
           {{#if editingTopic}}
             {{#if model.isPrivateMessage}}
               <span class="private-message-glyph">{{fa-icon "envelope"}}</span>
-              {{autofocus-text-field id="edit-title" value=buffered.title maxlength=siteSettings.max_topic_title_length}}
-            {{else}}
-              {{autofocus-text-field id="edit-title" value=buffered.title maxlength=siteSettings.max_topic_title_length}}
+            {{/if}}
+            {{autofocus-text-field id="edit-title" value=buffered.title maxlength=siteSettings.max_topic_title_length}}
+            {{#if showCategoryChooser}}
               <br>
               {{category-chooser valueAttribute="id" value=buffered.category_id source=buffered.category_id}}
             {{/if}}

app/serializers/basic_category_serializer.rb

@@ -19,7 +19,8 @@ class BasicCategorySerializer < ApplicationSerializer
              :background_url,
              :can_edit,
              :topic_template,
-             :has_children
+             :has_children,
+             :is_support
 
   def include_parent_category_id?
     parent_category_id

app/serializers/category_serializer.rb

@@ -8,7 +8,6 @@ class CategorySerializer < BasicCategorySerializer
              :position,
              :email_in,
              :email_in_allow_strangers,
-             :is_support,
              :suppress_from_homepage,
              :can_delete,
              :cannot_delete_reason,