ruby 控制器中部分和布局的 Rails 渲染

Rails render of partial and layout in controller

提问by Richlewis

I am overriding the create action of the devise Registrations Controller. I have two forms for signup, individual or company, a company has a field called company_form set to true that differentiates the two forms.

我正在覆盖设计注册控制器的创建操作。我有两种注册表格，个人或公司，一家公司有一个名为 company_form 的字段设置为 true 以区分这两种形式。

Upon form validation I would like the correct form to render (previously it was going back to the default form no matter what form i was using).

在表单验证时，我希望呈现正确的表单（以前无论我使用什么表单，它都会返回默认表单）。

I am having an issue where just the partial is being rendered (obvious as i am only rendering the partial), but I need the layouts/application file to be rendered aswell.

我有一个问题，只是渲染了部分（很明显，因为我只渲染了部分），但我还需要渲染布局/应用程序文件。

class RegistrationsController < Devise::RegistrationsController
  def create
  <!-- Other devise code here -->
    if resource.company_form
      render partial: 'shared/company_signup_form'
    else
      render partial: '/shared/individual_signup_form'
    end
  end
end

I have tried

我试过了

if resource.company_form
    render partial: 'shared/company_signup_form', layout: 'layouts/application'
  else
    render partial: '/shared/individual_signup_form', layout: 'layouts/application
  end

But i get an error

但我收到一个错误

Template is missing
Missing partial layouts/_application 

Why is it looking for a partial _application when I specified layout and how can i get the correct layout to be applied please

为什么在我指定布局时寻找部分 _application 以及如何获得要应用的正确布局

Thanks

谢谢

Edit

编辑

Reading through the documentation it says

通读它说的文档

"Note that layouts for partials follow the same leading-underscore naming as regular partials, and are placed in the same folder with the partial that they belong to (not in the master layouts folder)."

“请注意，分音的布局遵循与常规分音相同的前导下划线命名，并与它们所属的分音放在同一文件夹中（不在主布局文件夹中）。”

But i want the default layout to be applied

但我希望应用默认布局

采纳答案by Deepak Kumar Jha

Partial rendering in a controller is most commonly used together with Ajax calls that only update one or a few elements on a page without reloading. Rendering of partials from the controller makes it possible to use the same partial template in both the full-page rendering (by calling it from within the template) and when sub-page updates happen (from the controller action responding to Ajax calls). By default, the current layout is not used.

控制器中的部分渲染最常与 Ajax 调用一起使用，后者只更新页面上的一个或几个元素而无需重新加载。从控制器渲染部分使得可以在整页渲染（通过从模板中调用它）和子页面更新发生时（从响应 Ajax 调用的控制器操作）使用相同的部分模板。默认情况下，不使用当前布局。

This may be the reason your code is not working you can use rendering template.

这可能是您的代码不起作用的原因，您可以使用渲染模板。

Template rendering works just like action rendering except that it takes a path relative to the template root. The current layout is automatically applied.

模板渲染的工作方式与动作渲染类似，只是它采用相对于模板根的路径。当前布局将自动应用。

if resource.company_form
   render :template => "shared/company_signup_form"
else
   render :template => "shared/individual_signup_form"   
end

** REMOVE UNDERSCORE from your partail name because you are using this as a template.

** 从您的部分名称中删除 UNDERSCORE，因为您将其用作模板。

Hope this works !

希望这有效！

回答by Richlewis

In the end (and i know this is a hack) but i created a partial called _partial_layout_wrapper in my layouts that was an exact copy of the layouts/application file and used this in my controller

最后（我知道这是一个 hack）但我在我的布局中创建了一个名为 _partial_layout_wrapper 的部分，它是布局/应用程序文件的精确副本，并在我的控制器中使用它

render partial: 'shared/company_signup_form', layout: 'partial_layout_wrapper'

this works but surely this cannot be the way ?

这行得通，但肯定不是这样吗？

回答by Plamena Gancheva

Could you post your whole controller? Rails renders by default layout/application.html.erb if another layout is not specified.

你能把你的整个控制器贴出来吗？如果未指定其他布局，Rails 默认呈现 layout/application.html.erb。

From the ror guides:

从 ror 指南：

Partial Layouts

A partial can use its own layout file, just as a view can use a layout. For example, you might call a partial like this:

<%= render partial: "link_area", layout: "graybar" %>

This would look for a partial named _link_area.html.erb and render it using the layout _graybar.html.erb. Note that layouts for partials follow the same leading-underscore naming as regular partials, and are placed in the same folder with the partial that they belong to (not in the master layouts folder).

Also note that explicitly specifying :partial is required when passing additional options such as :layout.

部分布局

局部可以使用自己的布局文件，就像视图可以使用布局一样。例如，您可以像这样调用部分：

<%= render partial: "link_area", layout: "graybar" %>

这将查找名为 _link_area.html.erb 的部分并使用布局 _graybar.html.erb 呈现它。请注意，分音的布局遵循与常规分音相同的前导下划线命名，并与它们所属的分音放在同一文件夹中（不在主布局文件夹中）。

另请注意，在传递诸如 :layout 之类的其他选项时，需要明确指定 :partial。

So render partial: 'shared/company_signup_form', layout: 'layouts/application'is looking for layouts/_application.html.erb

所以render partial: 'shared/company_signup_form', layout: 'layouts/application'正在寻找 layouts/_application.html.erb