Simplify render in controllers

Like simplify render in views, from rails 2.3, we can also simplify render in controllers. Here I will show you the contrast.

Rendering an Action's View

Before

render :action => :edit
render :action => 'edit'

After

render :edit
render 'edit'

Rendering an Action’s Template from Another Controller

Before

render :template => 'books/edit'

After

render 'books/edit'

Rendering an Arbitrary File

Before

render :file => '/path/to/rails/app/views/books/edit'

After

render '/path/to/rails/app/views/books/edit'