Don’t render layouts for templates with the given extensions.

Source Code

# File action_controller/base.rb, line 511
def exempt_from_layout(*extensions)
  regexps = extensions.collect do |extension|
    extension.is_a?(Regexp) ? extension : /\.#{Regexp.escape(extension.to_s)}$/
  end
  @@exempt_from_layout.merge regexps
end