Note on altering the show action using FriendlyId with scaffolds and RSpec

FriendlyId with scaffolds and RSpec

# Note on altering the show action using FriendlyId with scaffolds and RSpec
# Ran into an issue while following http://railscasts.com/episodes/314-pretty-urls-with-friendlyid

# GET /articles/1
# GET /articles/1.json
def show
  @article = Article.find(params[:id])
  if request.path != article_path(@article)
    redirect_to @article, status: :moved_permanently
  end

  respond_to do |format|
    format.html # show.html.erb
    format.json { render json: @article }
  end
end

# Throws a failure like this:
# 
# 1) ArticlesController GET show assigns the requested article as @article
#    Failure/Error: get :show, {:id => article.to_param}, valid_session
#    AbstractController::DoubleRenderError:
#      Render and/or redirect were called multiple times in this action. Please note that you may only call render OR redirect, and at most once per action. Also note that neither redirect nor render terminate execution of the action, so if you want to exit an action after redirecting, you need to do something like "redirect_to(...) and return".
#    # ./app/controllers/articles_controller.rb:21:in `show'
#    # ./spec/controllers/articles_controller_spec.rb:55:in `block (3 levels) in <top (required)>'


# Quick fix I'm sure could be made more eloquent  

# GET /articles/1
# GET /articles/1.json
def show
  @article = Article.find(params[:id])
  if request.path != article_path(@article)
    redirect_to @article, status: :moved_permanently
  else # <= Prevents error
    respond_to do |format|
      format.html # show.html.erb
      format.json { render json: @article }
    end
  end
end