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Diffstat (limited to 'railties/guides/source/layouts_and_rendering.textile')
| -rw-r--r-- | railties/guides/source/layouts_and_rendering.textile | 22 |
1 files changed, 11 insertions, 11 deletions
diff --git a/railties/guides/source/layouts_and_rendering.textile b/railties/guides/source/layouts_and_rendering.textile index 69ef05104c..6f0dc57090 100644 --- a/railties/guides/source/layouts_and_rendering.textile +++ b/railties/guides/source/layouts_and_rendering.textile @@ -348,9 +348,9 @@ h5. Finding Layouts To find the current layout, Rails first looks for a file in +app/views/layouts+ with the same base name as the controller. For example, rendering actions from the +PhotosController+ class will use +app/views/layouts/photos.html.erb+ (or +app/views/layouts/photos.builder+). If there is no such controller-specific layout, Rails will use +app/views/layouts/application.html.erb+ or +app/views/layouts/application.builder+. If there is no +.erb+ layout, Rails will use a +.builder+ layout if one exists. Rails also provides several ways to more precisely assign specific layouts to individual controllers and actions. -h6. Specifying Layouts on a per-Controller Basis +h6. Specifying Layouts for Controllers -You can override the automatic layout conventions in your controllers by using the +layout+ declaration in the controller. For example: +You can override the default layout conventions in your controllers by using the +layout+ declaration. For example: <ruby> class ProductsController < ApplicationController @@ -359,9 +359,9 @@ class ProductsController < ApplicationController end </ruby> -With this declaration, all methods within +ProductsController+ will use +app/views/layouts/inventory.html.erb+ for their layout. +With this declaration, all of the methods within +ProductsController+ will use +app/views/layouts/inventory.html.erb+ for their layout. -To assign a specific layout for the entire application, use a declaration in your +ApplicationController+ class: +To assign a specific layout for the entire application, use a +layout+ declaration in your +ApplicationController+ class: <ruby> class ApplicationController < ActionController::Base @@ -370,7 +370,7 @@ class ApplicationController < ActionController::Base end </ruby> -With this declaration, all views in the entire application will use +app/views/layouts/main.html.erb+ for their layout. +With this declaration, all of the views in the entire application will use +app/views/layouts/main.html.erb+ for their layout. h6. Choosing Layouts at Runtime @@ -392,9 +392,9 @@ class ProductsController < ApplicationController end </ruby> -Now, if the current user is a special user, they'll get a special layout when viewing a product. You can even use an inline method to determine the layout: +Now, if the current user is a special user, they'll get a special layout when viewing a product. -You can also decide the layout by passing a Proc object, the block you give the Proc will be given the +controller+ instance, so you can make decisions based on the current request. For example: +You can even use an inline method, such as a Proc, to determine the layout. For example, if you pass a Proc object, the block you give the Proc will be given the +controller+ instance, so the layout can be determined based on the current request: <ruby> class ProductsController < ApplicationController @@ -404,7 +404,7 @@ end h6. Conditional Layouts -Layouts specified at the controller level support +:only+ and +:except+ options that take either a method name or an array of method names which correspond to method names within the controller: +Layouts specified at the controller level support the +:only+ and +:except+ options. These options take either a method name, or an array of method names, corresponding to method names within the controller: <ruby> class ProductsController < ApplicationController @@ -416,7 +416,7 @@ With this declaration, the +product+ layout would be used for everything but the h6. Layout Inheritance -Layouts are shared downwards in the hierarchy, and more specific layouts always override more general ones. For example: +Layout declarations cascade downward in the hierarchy, and more specific layout declarations always override more general ones. For example: * +application_controller.rb+ @@ -495,9 +495,9 @@ def show end </ruby> -Make sure you use +and return+ and not +&& return+ because while the former will work, the latter will not due to operator precedence in the Ruby Language. +Make sure to use +and return+ and not +&& return+, since +&& return+ will not work due to the operator precedence in the Ruby Language. -Note that the implicit render done by ActionController detects if +render+ has been called, and thus avoids this error. Therefore, the following will work without errors: +Note that the implicit render done by ActionController detects if +render+ has been called, so the following will work without errors: <ruby> def show |