Rails에서 다른 형식의 일부를 어떻게 렌더링합니까?

Rails에서 다른 형식의 일부를 어떻게 렌더링합니까?

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HTML이 포함 된 JSON 응답을 생성하려고합니다. 따라서 나는 가지고있다 /app/views/foo/bar.json.erb:

{
  someKey: 'some value',
  someHTML: "<%= h render(:partial => '/foo/baz') -%>"
}

나는 그것을 렌더링 /app/views/foo/_baz.html.erb하고 싶지만 렌더링 만 할 것 /app/views/foo/_baz.json.erb입니다. 전달해 :format => 'html'도 도움이되지 않습니다.

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render : partial을 호출 할 때 Rails 3.2.3부터 시작합니다 ( respond_to블록 외부에서만 작동 ).

:formats => [:html]

대신에

:format => 'html'

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무슨 일이야

render :partial => '/foo/baz.html.erb'

? 방금 Atom 빌더 템플릿 내부에서 HTML ERB를 부분적으로 렌더링하려고 시도했지만 정상적으로 작동했습니다. 전역 변수가 필요하지 않습니다 (예, 변수 앞에 "@"가 있다는 것을 알고 있지만 그것이 그 것입니다).

당신의 with_format &block접근 방식은 그래도 멋지다, 잘 같은 간단한 방법이 템플릿 엔진을 지정하는 반면 만, 형식을 지정하는 장점 (ERB / 빌더 / 등)이있다.

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Rails 3의 경우 with_format 블록이 작동하지만 약간 다릅니다.

  def with_format(format, &block)
    old_formats = formats
    self.formats = [format]
    block.call
    self.formats = old_formats
    nil
  end

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Rails 4에서는 형식 매개 변수를 전달할 수 있습니다. 그래서 당신은 할 수 있습니다

render(:partial => 'form', :formats => [:html])} 

Rails 3에서 비슷한 작업을 수행 할 수 있지만 해당 형식을 하위 부분 (양식이 다른 부분을 호출하는 경우)으로 전달하지는 않습니다.

config / initializers / renderer.rb를 생성하여 Rails 3에서 Rails 4 기능을 사용할 수 있습니다 :

class ActionView::PartialRenderer
  private
  def setup_with_formats(context, options, block)
    formats = Array(options[:formats])
    @lookup_context.formats = formats | @lookup_context.formats
    setup_without_formats(context, options, block)
  end

  alias_method_chain :setup, :formats
end

http://railsguides.net/2012/08/29/rails3-does-not-render-partial-for-specific-format/을 참조하십시오

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roninek의 응답 을 바탕으로 최고의 솔루션은 다음과 같습니다.

/app/helpers/application.rb에서 :

def with_format(format, &block)
  old_format = @template_format
  @template_format = format
  result = block.call
  @template_format = old_format
  return result
end

/app/views/foo/bar.json에서 :

<% with_format('html') do %>
  <%= h render(:partial => '/foo/baz') %>
<% end %>

An alternate solution would be to redefine render to accept a :format parameter.

I couldn't get render :file to work with locals and without some path wonkiness.

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In Rails 3, the View has a formats array, which means you can set it to look for [:mobile, :html]. Setting that will default to looking for :mobile templates, but fall back to :html templates. The effects of setting this will cascade down into inner partials.

The best, but still flawed way, that I could find to set this was to put this line at the top of each full mobile template (but not partials).

<% self.formats = [:mobile, :html] %>

The flaw is that you have to add that line to multiple templates. If anyone knows a way to set this once, from application_controller.rb, I'd love to know it. Unfortunately, it doesn't work to add that line to your mobile layout, because the templates are rendered before the layout.

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Just elaborating on what zgchurch wrote:

• taking exceptions into account
• returning the result of the called block

Thought it might be useful.

def with_format(format, &block)
  old_formats = formats
  begin
    self.formats = [format]
    return block.call
  ensure
    self.formats = old_formats
  end
end

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You have two options:

1) use render :file

render :file => "foo/_baz.json.erb"

2) change template format to html by setting @template_format variable

<% @template_format = "html" %>
<%= h render(:partial => '/foo/baz') %>

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I had a file named 'api/item.rabl' and I wanted to render it from an HTML view so I had to use:

render file: 'api/item', formats: [:json]

(file because the file have no underscore in the name, formats and not format (and passes and array))

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It seems that passing a formats option will render it properly in newer Rails version, at least 3.2:

{
  someKey: 'some value',
  someHTML: "<%= h render('baz', formats: :html) -%>"
}

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I came across this thread when I was trying to render an XML partial in another xml.builder view file. Following is a nice way to do it

xml.items :type => "array" do
    @items.each do |item|
        xml << render(:partial => 'shared/partial.xml.builder', :locals => { :item => item })
    end
end

And yeah... Full file name works here as well...

참고URL : https://stackoverflow.com/questions/339130/how-do-i-render-a-partial-of-a-different-format-in-rails