diff options
Diffstat (limited to 'actionpack/lib/abstract_controller/layouts.rb')
| -rw-r--r-- | actionpack/lib/abstract_controller/layouts.rb | 28 |
1 files changed, 18 insertions, 10 deletions
diff --git a/actionpack/lib/abstract_controller/layouts.rb b/actionpack/lib/abstract_controller/layouts.rb index 92e93cbee7..bc9f6fc3e8 100644 --- a/actionpack/lib/abstract_controller/layouts.rb +++ b/actionpack/lib/abstract_controller/layouts.rb @@ -89,7 +89,7 @@ module AbstractController # class TillController < BankController # layout false # - # In these examples, we have three implicit lookup scenrios: + # In these examples, we have three implicit lookup scenarios: # * The BankController uses the "bank" layout. # * The ExchangeController uses the "exchange" layout. # * The CurrencyController inherits the layout from BankController. @@ -120,6 +120,7 @@ module AbstractController # def writers_and_readers # logged_in? ? "writer_layout" : "reader_layout" # end + # end # # Now when a new request for the index action is processed, the layout will vary depending on whether the person accessing # is logged in or not. @@ -127,7 +128,14 @@ module AbstractController # If you want to use an inline method, such as a proc, do something like this: # # class WeblogController < ActionController::Base - # layout proc{ |controller| controller.logged_in? ? "writer_layout" : "reader_layout" } + # layout proc { |controller| controller.logged_in? ? "writer_layout" : "reader_layout" } + # end + # + # If an argument isn't given to the proc, it's evaluated in the context of + # the current controller anyway. + # + # class WeblogController < ActionController::Base + # layout proc { logged_in? ? "writer_layout" : "reader_layout" } # end # # Of course, the most common way of specifying a layout is still just as a plain template name: @@ -136,8 +144,8 @@ module AbstractController # layout "weblog_standard" # end # - # If no directory is specified for the template name, the template will by default be looked for in <tt>app/views/layouts/</tt>. - # Otherwise, it will be looked up relative to the template root. + # The template will be looked always in <tt>app/views/layouts/</tt> folder. But you can point + # <tt>layouts</tt> folder direct also. <tt>layout "layouts/demo"</tt> is the same as <tt>layout "demo"</tt>. # # Setting the layout to nil forces it to be looked up in the filesystem and fallbacks to the parent behavior if none exists. # Setting it to nil is useful to re-enable template lookup overriding a previous configuration set in the parent: @@ -238,10 +246,10 @@ module AbstractController # # If the specified layout is a: # String:: the String is the template name - # Symbol:: call the method specified by the symbol, which will return - # the template name + # Symbol:: call the method specified by the symbol, which will return the template name # false:: There is no layout # true:: raise an ArgumentError + # nil:: Force default layout behavior with inheritance # # ==== Parameters # * <tt>layout</tt> - The layout to use. @@ -299,12 +307,12 @@ module AbstractController end RUBY when Proc - define_method :_layout_from_proc, &_layout - "_layout_from_proc(self)" + define_method :_layout_from_proc, &_layout + _layout.arity == 0 ? "_layout_from_proc" : "_layout_from_proc(self)" when false nil when true - raise ArgumentError, "Layouts must be specified as a String, Symbol, false, or nil" + raise ArgumentError, "Layouts must be specified as a String, Symbol, Proc, false, or nil" when nil name_clause end @@ -364,7 +372,7 @@ module AbstractController when false, nil then nil else raise ArgumentError, - "String, true, or false, expected for `layout'; you passed #{name.inspect}" + "String, Proc, :default, true, or false, expected for `layout'; you passed #{name.inspect}" end end |