Simplify user action make it more idiomatic

spec/controllers/user_actions_controller_spec.rb

@@ -0,0 +1,22 @@
+require 'spec_helper'
+
+describe UserActionsController do
+  context 'index' do
+
+    it 'renders list correctly' do
+      ActiveRecord::Base.observers.enable :all
+      post = Fabricate(:post)
+
+      xhr :get, :index, username: post.user.username
+
+      response.status.should == 200
+      parsed = JSON.parse(response.body)
+      actions = parsed["user_actions"]
+      actions.length.should == 1
+      action = actions[0]
+      action["acting_name"].should == post.user.name
+      action["email"].should be_nil
+      action["post_number"].should == "1"
+    end
+  end
+end