控制器的不同布局与Rails中的respond_to

Question

I understand I can call the render method with layout: 'my_layout' to change the layout within a controller method. However, some of my controller methods have the following so that I can easily render JSON as well:

respond_to do |format|
  format.html
  format.json { render json: @cars }
end

How do I change the layout for format.html ? Should I replace format.html with render layout: 'my_layout' ? Is there an option I can pass to format.html ?

Answer 1

By default Rails will use app/views/layouts/application.html.erb as the layout. If you want to use another layout, create app/views/layouts/my-new-layout.html.erb then

In your controller method:

respond_to do |format|
  format.html { render layout: 'my-new-layout' }
  format.json { render json: @cars }
end

Here's the relevant section in the Rails Guide: Layouts and Rendering: Options for Render