Action View Layouts

Methods
Public Instance methods
find_layout(layout)

This is the method which actually finds the layout using details in the lookup context object. If no layout is found, it checks if at least a layout with the given name exists across all details before raising the error.

  # File actionpack/lib/action_view/render/layouts.rb, line 65
def find_layout(layout)
  begin
    with_layout_format do
      layout =~ /^\// ?
        with_fallbacks { find_template(layout) } : find_template(layout)
    end
  rescue ActionView::MissingTemplate => e
    update_details(:formats => nil) do
      raise unless template_exists?(layout)
    end
  end
end