Rails：content_tag 中的多个渲染？

发布于 2024-10-20 10:43:06 字数 509 浏览 6 评论 0原文

我在辅助方法中遇到了这个毛茸茸的问题：

template = content_tag(:div) do      
  form_builder.fields_for(association, object) do |f|
    formats.each do |format|
      partial = "#{format}_fields"
      render(:partial => partial, :locals => { :f => f })
    end
  end
end

不幸的是，如果我在 content_tag< 中执行 each 循环，template 似乎实际上没有任何内容/代码>。

我有什么想法可以实现这一点吗？我需要为此content_tag渲染多个部分。

注意：我正在运行 Rails 3.0.3

原文

I've got this hairy bit in a helper method:

template = content_tag(:div) do      
  form_builder.fields_for(association, object) do |f|
    formats.each do |format|
      partial = "#{format}_fields"
      render(:partial => partial, :locals => { :f => f })
    end
  end
end

Unfortunately template doesn't seem to actually have any content if I do the each loop within the content_tag.

Any ideas how I could pull this off? I need to render multiple partials for this content_tag.

Note: I'm running Rails 3.0.3

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夜空下最亮的亮点 2024-10-27 10:43:06

这段代码看起来有点可疑，你到底想做什么？使用带有布局的部分可能比尝试在助手中执行此操作更好。

我认为 render(:partial => ) 将返回内容而不是将其连接到输出流，所以也许尝试像这样编写你的助手：

template = content_tag(:div) do      
  fields = ''
  form_builder.fields_for(association, object) do |f|
    formats.each do |format|
      partial = "#{format}_fields"
      fields << render(:partial => partial, :locals => { :f => f })
    end
  end
  fields
end

This code looks a little suspect, what is it exactly you want to do? You might be better served using a partial with a layout than trying to do this in a helper.

I think render(:partial => ) will return the content and not concat it to the output stream, so maybe try writing your helper like this:

template = content_tag(:div) do      
  fields = ''
  form_builder.fields_for(association, object) do |f|
    formats.each do |format|
      partial = "#{format}_fields"
      fields << render(:partial => partial, :locals => { :f => f })
    end
  end
  fields
end

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