render :json 不接受选项 [英] render :json does not accept options

问题描述

我很想使用 render :json 但它似乎没有那么灵活.这样做的正确方法是什么?

I'd love to use render :json but it seems its not as flexible. Whats the right way to do this?

respond_to do |format|
  format.html # index.html.erb
  format.xml  { render :xml => @things }

  #This is great
  format.json { render :text => @things.to_json(:include => :photos) }

  #This doesn't include photos
  format.json { render :json => @things, :include => :photos }
end

推荐答案

我用 render :json 做了类似的事情.这对我有用:

I've done something similar with render :json. This is what worked for me:

respond_to do |format|
    format.html # index.html.erb
    format.json  { render :json => @things.to_json(:include => { :photos => { :only => [:id, :url] } }) }
end

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