Ruby-on-rails 一个控制器使用另一个控制器的视图进行渲染

One controller rendering using another controller's views

提问by Paul

I have QuestionController I now have AnotherQuestionController with actions which should render using templates and partials in app/views/question/ Is this possible? Seems like it should be.

我有 QuestionController 我现在有 AnotherQuestionController 其动作应该使用 app/views/question/ 中的模板和部分呈现这可能吗？好像应该是这样。

I've tried

我试过了

render :template => "question/answer"

but answer.html.erb includes partials and I get errors like

但 answer.html.erb 包含部分，我得到了类似的错误

"Missing template another_question/_my_partial.erb in view path"

“视图路径中缺少模板 another_question/_my_partial.erb”

So is there a way to tell Rails "treat AnotherQuestionController as if its QuestionController and look for views and partials in app/views/question"? Or will I have to create app/views/another_question - which will cause duplication (this can't be the Rails way).

那么有没有办法告诉Rails“将AnotherQuestionController视为它的QuestionController并在app/views/question中查找视图和部分”？或者我是否必须创建 app/views/another_question - 这会导致重复（这不能是 Rails 的方式）。

Thanks

谢谢

回答by Ben Hughes

Template rendering should actually work

模板渲染应该可以正常工作

 render :template => "question/answer"

The problem you were having is from the partials looking in the wrong place. The fix is simple, just make your partials absolute in any shared templates. For example, question/answer.html.erb should have

您遇到的问题来自于在错误位置寻找的部分。修复很简单，只需在任何共享模板中使您的部分成为绝对。例如， question/answer.html.erb 应该有

<%= render :partial => 'question/some_partial' %>

rather than the usual

而不是通常的

<%= render :partial => 'some_partial' %> 

回答by klew

You can achieve it with:

您可以通过以下方式实现：

render 'question/answer'

回答by Steve

Rails uses a list of prefixes to resolve templates and partials. While you canexplicitly specify a prefix ("question/answer"), as suggested in another answer, this approach will fail if the template itself includes unqualified references to other partials.

Rails 使用前缀列表来解析模板和部分。虽然您可以按照另一个答案中的建议明确指定前缀（“问题/答案”），但如果模板本身包含对其他部分的非限定引用，则此方法将失败。

Assuming that you have an ApplicationController superclass, and QuestionController inherits from it, then the places Rails would look for templates are, in order, "app/views/question/" and "app/views/application/". (Actually it will also look in a series of view paths, too, but I'm glossing over that for simplicity's sake.)

假设您有一个 ApplicationController 超类，并且 QuestionController 继承自它，那么 Rails 查找模板的位置依次为“app/views/question/”和“app/views/application/”。（实际上，它也会查看一系列视图路径，但为了简单起见，我将其忽略。）

Given the following:

鉴于以下情况：

class QuestionController < ApplicationController
end

class AnotherQuestionController < ApplicationController
end

QuestionController._prefixes
# => ["question", "application"]
AnotherQuestionController._prefixes
# => ["another_question", "application"]

Solution #1.Place the partial under "app/views/application/" instead of "app/views/question/", where it will be available to both controllers.

解决方案#1。将部分放在“app/views/application/”下，而不是“app/views/question/”下，两个控制器都可以使用它。

Solution #2.Inherit from QuestionController, if appropriate.

解决方案#2。如果合适，从 QuestionController 继承。

class AnotherQuestionController < QuestionController
end
=> nil
AnotherQuestionController._prefixes
# => ["another_question", "question", "application"]

Solution #3.Define the class method AnotherQuestionController::local_prefixes

解决方案#3。定义类方法 AnotherQuestionController:: local_prefixes

This was added in Rails 4.2.

这是在 Rails 4.2 中添加的。

class AnotherQuestionController < ApplicationController
  def self.local_prefixes
    super + ['question']
  end
end
AnotherQuestionController._prefixes
# => ["another_question", "question", "application"]

回答by Shadwell

You could try the inherit_views plugin (http://github.com/ianwhite/inherit_views/tree/master) I mentioned here in the answer to this question.

你可以试试inherit_views插件（http://github.com/ianwhite/inherit_views/tree/master）我在这个问题的回答中提到的。