是否可以在不使用 respond_to 方法和使用非常规文件名的情况下渲染 js.erb？

发布于 2024-12-01 18:06:38 字数 990 浏览 2 评论 0原文

是否可以在不使用 respond_to 方法的情况下呈现 js.erb 以响应 AJAX 请求？

我这样问有几个原因：

我只会对我的控制器进行 AJAX 调用；
我不会支持任何其他内容类型（即：html、：xml 等）；我
希望能够渲染一个不同的 js.erb 文件，而不是与控制器方法同名的文件（即 different.js.erb），

这是一些代码作为示例。

app/views/posts/awesome.js.erb:

alert("WOOHOO");

PostsController#create

def create
  @post = Post.new(params[:task])
  if @post.save 
    render :partial => 'awesome.js.erb'
  end
end

当通过 AJAX 调用 create 方法时，Rails 会抱怨部分丢失的：

ActionView::MissingTemplate (Missing partial post/awesome.js, application/awesome.js with {:handlers=>[:erb, :builder, :coffee, :haml], :formats=>[:js, "application/ecmascript", "application/x-ecmascript", :html, :text, :js, :css, :ics, :csv, :xml, :rss, :atom, :yaml, :multipart_form, :url_encoded_form, :json], :locale=>[:en, :en]}. Searched in:

原文

Is it possible to render a js.erb in response to an AJAX request without using the respond_to method?

I am asking because of a few reasons:

I will only be making AJAX calls to my controllers;
I will not be supporting any other content types (i.e., :html, :xml, etc.); and
I want to be able to render a different js.erb file, not one named the same as the controller method (i.e., different.js.erb)

Here is some code to serve as an example.

app/views/posts/awesome.js.erb:

alert("WOOHOO");

PostsController#create

def create
  @post = Post.new(params[:task])
  if @post.save 
    render :partial => 'awesome.js.erb'
  end
end

When the create method is called via AJAX, Rails complains about a partial missing:

ActionView::MissingTemplate (Missing partial post/awesome.js, application/awesome.js with {:handlers=>[:erb, :builder, :coffee, :haml], :formats=>[:js, "application/ecmascript", "application/x-ecmascript", :html, :text, :js, :css, :ics, :csv, :xml, :rss, :atom, :yaml, :multipart_form, :url_encoded_form, :json], :locale=>[:en, :en]}. Searched in:

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呆萌少年 2024-12-08 18:06:38

虽然 Kieber S. 的答案是正确的，但我认为这是另一种方法，对于那些想要支持创建 js.erb 文件的“传统”方法的人来说是有价值的。

不要使用 render :partial，而是使用 render :template。不过，这里需要注意的是，模板的搜索路径不会自动将范围限定为控制器的名称（即 app/views/posts）。相反，Rails 从 app/views/ 开始。因此，要引用“模板”，您需要添加要查看的子文件夹（如果它不在根目录中）。就我而言，我必须添加帖子。

def create
  @post = Post.new(params[:task])
  if @post.save 
    # using :template and added 'posts/' to path
    render :template => 'posts/awesome.js.erb'
  end
end

这样做的好处是，如果您碰巧想要使用 respond_to 方法并遵循约定，则无需通过删除下划线来重命名 js.erb 。

While Kieber S. answer is correct, here is another method that I think would be valuable for those who want to support the "conventional" method of creating js.erb files.

Instead of using render :partial use render :template. The caveat here, however, is that the search path for the template isn't automatically scoped to the name of the controller (i.e., app/views/posts). Instead, Rails starts at app/views/. So to reference the "template", you need to add the subfolder you want to look into, if it isn't in the root. In my case, I had to add posts.

def create
  @post = Post.new(params[:task])
  if @post.save 
    # using :template and added 'posts/' to path
    render :template => 'posts/awesome.js.erb'
  end
end

The benefit here is that if you should so happen to want to use the respond_to method and follow convention, you wouldn't need to rename your js.erb by removing the underscore.

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