Make the composer and TopicCreator use category id instead of category name

Also fixes #1171

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

@@ -328,7 +328,7 @@ Discourse.Composer = Discourse.Model.extend({
     }
 
     this.setProperties({
-      categoryName: opts.categoryName || this.get('topic.category.name'),
+      categoryId: opts.categoryId || this.get('topic.category.id'),
       archetypeId: opts.archetypeId || Discourse.Site.currentProp('default_archetype'),
       metaData: opts.metaData ? Em.Object.create(opts.metaData) : null,
       reply: opts.reply || this.get("reply") || ""
@@ -394,16 +394,9 @@ Discourse.Composer = Discourse.Model.extend({
       var topic = this.get('topic');
       topic.setProperties({
         title: this.get('title'),
-        fancy_title: this.get('title')
+        fancy_title: this.get('title'),
+        category_id: parseInt(this.get('categoryId'), 10)
       });
-
-      var category = Discourse.Category.list().findProperty('name', this.get('categoryName'));
-      if (category) {
-        topic.setProperties({
-          categoryName: category.get('name'),
-          category_id: category.get('id')
-        });
-      }
       topic.save();
     }
 
@@ -442,7 +435,7 @@ Discourse.Composer = Discourse.Model.extend({
     var createdPost = Discourse.Post.create({
       raw: this.get('reply'),
       title: this.get('title'),
-      category: this.get('categoryName'),
+      category: this.get('categoryId'),
       topic_id: this.get('topic.id'),
       reply_to_post_number: post ? post.get('post_number') : null,
       imageSizes: opts.imageSizes,
@@ -529,7 +522,7 @@ Discourse.Composer = Discourse.Model.extend({
       reply: this.get('reply'),
       action: this.get('action'),
       title: this.get('title'),
-      categoryName: this.get('categoryName'),
+      categoryId: this.get('categoryId'),
       postId: this.get('post.id'),
       archetypeId: this.get('archetypeId'),
       metaData: this.get('metaData'),

app/assets/javascripts/discourse/templates/composer.js.handlebars

@@ -46,7 +46,7 @@
 
             {{#unless model.creatingPrivateMessage}}
               <div class="category-input">
-                {{categoryChooser valueAttribute="name" value=model.categoryName}}
+                {{categoryChooser valueAttribute="id" value=model.categoryId}}
                 {{popupInputTip validation=view.categoryValidation shownAt=view.showCategoryTip}}
               </div>
               {{#if model.archetype.hasOptions}}

lib/topic_creator.rb

@@ -39,7 +39,7 @@ class TopicCreator
     topic_params[:archetype] = @opts[:archetype] if @opts[:archetype].present?
     topic_params[:subtype] = @opts[:subtype] if @opts[:subtype].present?
 
-    category = Category.where(name: @opts[:category]).first
+    category = Category.where(id: @opts[:category]).first
 
     @guardian.ensure_can_create!(Topic,category)
     topic_params[:category_id] = category.id if category.present?

spec/components/post_creator_spec.rb

@@ -17,7 +17,7 @@ describe PostCreator do
     let(:image_sizes) { {'http://an.image.host/image.jpg' => {"width" => 111, "height" => 222}} }
 
     let(:creator) { PostCreator.new(user, basic_topic_params) }
-    let(:creator_with_category) { PostCreator.new(user, basic_topic_params.merge(category: category.name )) }
+    let(:creator_with_category) { PostCreator.new(user, basic_topic_params.merge(category: category.id )) }
     let(:creator_with_meta_data) { PostCreator.new(user, basic_topic_params.merge(meta_data: {hello: "world"} )) }
     let(:creator_with_image_sizes) { PostCreator.new(user, basic_topic_params.merge(image_sizes: image_sizes)) }
 
@@ -75,7 +75,7 @@ describe PostCreator do
         reply = nil
 
         messages = MessageBus.track_publish do
-          created_post = PostCreator.new(admin, basic_topic_params.merge(category: cat.name)).create
+          created_post = PostCreator.new(admin, basic_topic_params.merge(category: cat.id)).create
           reply = PostCreator.new(admin, raw: "this is my test reply 123 testing", topic_id: created_post.topic_id).create
         end
 

spec/models/category_featured_topic_spec.rb

@@ -8,7 +8,7 @@ describe CategoryFeaturedTopic do
   context 'feature_topics_for' do
     let(:user)           { Fabricate(:user) }
     let(:category)       { Fabricate(:category) }
-    let!(:category_post) { PostCreator.create(user, raw: "I put this post in the category", title: "categorize THIS", category: category.name) }
+    let!(:category_post) { PostCreator.create(user, raw: "I put this post in the category", title: "categorize THIS", category: category.id) }
 
     it "should feature topics for a secure category" do
 
@@ -26,7 +26,7 @@ describe CategoryFeaturedTopic do
     end
 
     it 'should not include invisible topics' do
-      invisible_post = PostCreator.create(user, raw: "Don't look at this post because it's awful.", title: "not visible to anyone", category: category.name)
+      invisible_post = PostCreator.create(user, raw: "Don't look at this post because it's awful.", title: "not visible to anyone", category: category.id)
       invisible_post.topic.update_status('visible', false, Fabricate(:admin))
       CategoryFeaturedTopic.feature_topics_for(category)
       CategoryFeaturedTopic.count.should == 1