display proper counts after feedback actions; modified destroy responses to return PostPresenter objects

app/controllers/likes_controller.rb

@@ -32,8 +32,7 @@ class LikesController < ApplicationController
     if @like
       current_user.retract(@like)
       respond_to do |format|
-        format.any { }
-        format.json{ render :json => @like.parent.as_api_response(:backbone), :status => 202 }
+        format.json { render :json => PostPresenter.new(@like.parent, current_user).to_json, :status => 202 }
       end
     else
       respond_to do |format|

app/controllers/participations_controller.rb

@@ -30,8 +30,7 @@ class ParticipationsController < ApplicationController
     if @participation
       current_user.retract(@participation)
       respond_to do |format|
-        format.any { }
-        format.json{ render :json => @participation.parent.as_api_response(:backbone), :status => 202 }
+        format.json { render :json => PostPresenter.new(@participation.parent, current_user).to_json, :status => 202 }
       end
     else
       respond_to do |format|

app/presenters/post_presenter.rb

@@ -14,6 +14,9 @@ class PostPresenter
         {
         :user_like => self.user_like,
         :user_participation => self.user_participation,
+        :likes_count => self.post.likes.count,
+        :participations_count => self.post.participations.count,
+        :reshares_count => self.post.reshares.count,
         :user_reshare => self.user_reshare,
         :next_post => self.next_post_url,
         :previous_post => self.previous_post_url

public/javascripts/app/models/post.js

@@ -46,13 +46,14 @@ app.models.Post = Backbone.Model.extend({
   },
 
   unfollow : function() {
+    var self = this;
     var participationModel = new app.models.Participation(this.get("user_participation"));
     participationModel.url = this.participations.url + "/" + participationModel.id;
 
-    participationModel.destroy();
-    this.set({ user_participation : null });
-
-    this.trigger('feedback', this)
+    participationModel.destroy({success : function(model, resp){
+      self.set(resp.post);
+      self.trigger('feedback', this)
+    }});
   },
 
   toggleLike : function() {
@@ -67,17 +68,19 @@ app.models.Post = Backbone.Model.extend({
   like : function() {
     var self = this;
     this.likes.create({}, {success : function(resp){
-      self.set(resp.attributes.post)
+      self.set(resp.get("post"))
       self.trigger('feedback', self)
     }});
   },
 
   unlike : function() {
+    var self = this;
     var likeModel = new app.models.Like(this.get("user_like"));
     likeModel.url = this.likes.url + "/" + likeModel.id;
 
-    likeModel.destroy();
-    this.set({ user_like : null });
-    this.trigger('feedback', this)
+    likeModel.destroy({success : function(model, resp) {
+      self.set(resp.post);
+      self.trigger('feedback', this)
+    }});
   }
 });

public/javascripts/app/templates/post-viewer/feedback.handlebars

@@ -10,6 +10,7 @@
   {{else}}
     <i class="icon-heart icon-white"></i>
   {{/if}}
+  {{likes_count}}
 </a>
 
 <a href="#" class="label follow" title="{{#if user_participation}} Stop Following {{else}} Follow {{/if}} Post">
@@ -18,6 +19,7 @@
   {{else}}
     <i class="icon-plus icon-white"></i>
   {{/if}}
+  {{participations_count}}
 </a>
 
 {{#if userCanReshare}}
@@ -27,9 +29,11 @@
     {{else}}
       <i class="icon-retweet icon-white"></i>
     {{/if}}
+    {{reshares_count}}
   </a>
 {{/if}}
 
 <a href="#" class="label comment" title="Comment">
   <i class="icon-comment icon-white"></i>
+  {{comments_count}}
 </a>

spec/controllers/likes_controller_spec.rb

@@ -126,6 +126,11 @@ describe LikesController do
 
           response.status.should == 403
         end
+
+        it 'returns the parent post presenter' do
+          delete :destroy, :format => :json, id_field => @like.target_id, :id => @like.id
+          response.body.should == PostPresenter.new(@like.parent, alice).to_json.to_s
+        end
       end
     end
   end

spec/controllers/participations_controller_spec.rb

@@ -118,6 +118,11 @@ describe ParticipationsController do
 
         response.status.should == 403
       end
+
+      it 'returns the parent post presenter' do
+        delete :destroy, :format => :json, id_field => @participation.target_id, :id => @participation.id
+        response.body.should == PostPresenter.new(@participation.parent, alice).to_json.to_s
+      end
     end
   end
 end