Ruby-on-rails 每个动作的 Rails 布局？

Rails layouts per action?

提问by mrbrdo

I use a different layout for some actions (mostly for the new action in most of the controllers).

我对某些操作使用了不同的布局（主要用于大多数控制器中的新操作）。

I am wondering what the best way to specify the layout would be? (I am using 3 or more different layouts in the same controller)

我想知道指定布局的最佳方法是什么？（我在同一个控制器中使用了 3 个或更多不同的布局）

I don't like using

我不喜欢使用

render :layout => 'name'

渲染：布局 => '名称'

I liked doing

我喜欢做

layout 'name', :only => [:new]

布局 'name', :only => [:new]

But I can't use that to specify 2 or more different layouts.

但我不能用它来指定 2 个或更多不同的布局。

For example:

例如：

When I call layout 2 times in the same controller, with different layout names and different only options, the first one gets ignored - those actions don't display in the layout I specified.

当我在同一个控制器中使用不同的布局名称和不同的唯一选项调用布局 2 次时，第一个被忽略 - 这些操作不会显示在我指定的布局中。

Note: I'm using Rails 2.

注意：我使用的是 Rails 2。

回答by August Lilleaas

You can use a method to set the layout.

您可以使用一种方法来设置布局。

class MyController < ApplicationController
  layout :resolve_layout

  # ...

  private

  def resolve_layout
    case action_name
    when "new", "create"
      "some_layout"
    when "index"
      "other_layout"
    else
      "application"
    end
  end
end

回答by axeltaglia

If you are only selecting between two layouts, you can use :only:

如果您仅在两种布局之间进行选择，则可以使用:only：

class ProductsController < ApplicationController
   layout "admin", only: [:new, :edit]
end

or

或者

class ProductsController < ApplicationController
   layout "application", only: [:index]
end

回答by Gavin Terrill

You can specify the layout for an individual action using respond_to:

您可以使用respond_to为单个操作指定布局：

  def foo
    @model = Bar.first
    respond_to do |format|
      format.html {render :layout => 'application'}
    end
  end

回答by yottanami

You can also specify the layout for action using render:

您还可以使用渲染指定操作的布局：

def foo
  render layout: "application"
end

回答by barelyknown

There's a gem (layout_by_action) for that :)

有一个 gem (layout_by_action) :)

layout_by_action [:new, :create] => "some_layout", :index => "other_layout"

https://github.com/barelyknown/layout_by_action

https://github.com/barelyknown/layout_by_action

回答by puneet18

Various ways to specify layout under controller:

在控制器下指定布局的各种方法：

1. In following code, application_1 layout is called under index and show action of Users controller and application layout(default layout) is called for other actions.

   class UsersController < ApplicationController
     layout "application_1", only: [:index, :show]
   end
   

2. In following code, application_1 layout is called for all action of Users controller.

   class UsersController < ApplicationController
      layout "application_1"
   end
   

3. In following code, application_1 layout is called for test action of Users controllers only and for all other action application layout(default) is called.

       class UsersController < ApplicationController
         def test
           render layout: "application_1"
         end
       end
   

1. 在下面的代码中，application_1 布局在索引下被调用，用户控制器的显示动作和应用程序布局（默认布局）被调用以用于其他动作。

   class UsersController < ApplicationController
     layout "application_1", only: [:index, :show]
   end
   

2. 在以下代码中，为用户控制器的所有操作调用 application_1 布局。

   class UsersController < ApplicationController
      layout "application_1"
   end
   

3. 在下面的代码中，application_1 布局仅被调用用于用户控制器的测试操作，而对于所有其他操作应用程序布局（默认）被调用。

       class UsersController < ApplicationController
         def test
           render layout: "application_1"
         end
       end
   

回答by Gregdebrick

Precision :

精确 ：

A not really but working DRY way is what you see above, but with a precision : the layout need to be after your variables for working("@some"). As :

您在上面看到的不是真正但有效的 DRY 方式，但具有精确性：布局需要在您的工作变量之后（“@some”）。作为 ：

def your_action
   @some = foo
   render layout: "your_layout"
end

And not :

并不是 ：

def your_action
   render layout: "your_layout"
   @some = foo
   @foo = some
end

If you do a before_action... it's won't work also.

如果您执行 before_action ... 它也不会起作用。

Hope it helps.

希望能帮助到你。