Module: ActionController::Layout
- Defined in:
- lib/action_controller/layout.rb
Overview
:nodoc:
Defined Under Namespace
Modules: ClassMethods
Class Method Summary collapse
Instance Method Summary collapse
-
#active_layout(passed_layout = nil) ⇒ Object
Returns the name of the active layout.
Class Method Details
.included(base) ⇒ Object
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# File 'lib/action_controller/layout.rb', line 3 def self.included(base) base.extend(ClassMethods) base.class_eval do # NOTE: Can't use alias_method_chain here because +render_without_layout+ is already # defined as a publicly exposed method alias_method :render_with_no_layout, :render alias_method :render, :render_with_a_layout class << self alias_method_chain :inherited, :layout end end end |
Instance Method Details
#active_layout(passed_layout = nil) ⇒ Object
Returns the name of the active layout. If the layout was specified as a method reference (through a symbol), this method is called and the return value is used. Likewise if the layout was specified as an inline method (through a proc or method object). If the layout was defined without a directory, layouts is assumed. So layout "weblog/standard"
will return weblog/standard, but layout "standard"
will return layouts/standard.
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# File 'lib/action_controller/layout.rb', line 223 def active_layout(passed_layout = nil) layout = passed_layout || self.class.default_layout(response.template.template_format) active_layout = case layout when String then layout when Symbol then send!(layout) when Proc then layout.call(self) end # Explicitly passed layout names with slashes are looked up relative to the template root, # but auto-discovered layouts derived from a nested controller will contain a slash, though be relative # to the 'layouts' directory so we have to check the file system to infer which case the layout name came from. if active_layout if active_layout.include?('/') && ! layout_directory?(active_layout) active_layout else "layouts/#{active_layout}" end end end |