Return error when unlike failed

app/controllers/likes_controller.rb

@@ -31,7 +31,12 @@ class LikesController < ApplicationController
   end
 
   def destroy
-    @like = Like.find_by_id_and_author_id!(params[:id], current_user.person.id)
+    begin
+      @like = Like.find_by_id_and_author_id!(params[:id], current_user.person.id)
+    rescue ActiveRecord::RecordNotFound
+      render text: I18n.t("likes.destroy.error"), status: 404
+      return
+    end
 
     current_user.retract(@like)
     respond_to do |format|

config/locales/diaspora/en.yml

@@ -591,6 +591,8 @@ en:
   likes:
     create:
       error: "Failed to like."
+    destroy:
+      error: "Failed to unlike."
 
   notifications:
     started_sharing:

spec/controllers/likes_controller_spec.rb

@@ -133,14 +133,12 @@ describe LikesController, :type => :controller do
 
         it 'does not let a user destroy other likes' do
           like2 = eve.like!(@message)
-
           like_count = Like.count
-          expect {
-            delete :destroy, :format => :json, id_field => like2.target_id, :id => like2.id
-          }.to raise_error(ActiveRecord::RecordNotFound)
 
+          delete :destroy, :format => :json, id_field => like2.target_id, :id => like2.id
+          expect(response.status).to eq(404)
+          expect(response.body).to eq(I18n.t("likes.destroy.error"))
           expect(Like.count).to eq(like_count)
-
         end
       end
     end