rails 3，如何添加一个视图，该视图不使用与其他应用程序相同的布局? [英] rails 3, how add a view that does not use same layout as rest of app?

问题描述

我找不到任何有关如何构建我的应用程序的文档或示例，以允许同一控制器中的不同视图使用完全不同的布局和样式表.

I could not find any docs or examples on how to structure my app to allow different views in the same controller to use completely different layouts and stylesheets.

我们的应用程序被搭建起来，然后我们使用漂亮的生成器来生成视图，然后添加了用于身份验证的设计.我们有两种模型的视图和控制器:小部件和公司.

Our app was scaffolded and we then used nifty-generators to generate views, then added devise for authentication. We have views and controllers for two models: widgets and companies.

我目前只有一个布局:layouts/application.html.haml，我在任何地方都看不到该布局，所以我假设(一个Rails新手)它总是被命名约定使用.

I currently have a single layout: layouts/application.html.haml, I don't see that referenced anywhere so I assume (a rails newbie) that it's always used by naming convention.

我现在需要在同一控制器中添加几个视图(用于移动浏览器)，这些视图具有不同的样式表和布局(例如，右上角没有登录/注销链接).

I now need to add a couple of views (for mobile browsers) which have a different stylesheet and layout (for example, no login/logout links in the top right), within the same controllers.

那怎么办?

推荐答案

默认情况下为layouts/application.html.haml(如果您不使用haml，则为.erb).

By default, layouts/application.html.haml (.erb if you are not using haml).

实际上，可以针对每个控制器或每个动作(而不是针对每个视图，针对每个视图文件夹)设置布局文件.

In fact, layout file could be set per controller or per action, instead of per view, per view folder.

有几种情况:

class ApplicationController < ActionController::Base
  layout "another"

  # another way
  layout :another_by_method
  private
  def another_by_method
    if current_user.nil?
      "normal_layout"
    else
      "member_layout"
    end
  end
end

要更改某个控制器中的所有动作以使用另一个布局文件

class SessionsController < ActionController::Base
  layout "sessions_layout"
  # similar to the case in application controller, you could assign a method instead
end

更改动作以使用其他布局文件

def my_action
  if current_user.nil?
    render :layout => "normal_layout"
  else
    render :action => "could_like_this", :layout => "member_layout"
  end
end

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