Facebook Open Graph Action + Rails：返回JSON或HTML [英] Facebook Open Graph Action + Rails: return JSON or HTML

问题描述

我已经按照Ryan Bates的令人敬畏的教程实施了Facebook的Open Graph： http：// railsscasts.com/episodes/363-facebook-opengraphs

I've implemented Facebook's Open Graph per Ryan Bates' awesome tutorial: http://railscasts.com/episodes/363-facebook-open-graph

但是，当Facebook正在抓取我的网站以检索 og 参数，它看起来像是要求JSON格式。这是一个问题，因为我已经在使用JSON返回数据用于其他目的。我可以通过 format.html 返回Facebook的数据。我检查了请求对象，我看到这个ACCEPT标头：

However, when Facebook is scraping my site to retrieve the og parameters, it looks like it's asking for JSON format. That's a problem since I'm already using JSON to return data for other purposes. I'm ok returning data for Facebook via format.html. I checked the request object and I see this ACCEPT header:

'HTTP_ACCEPT' */*

但是，这导致我的应用程序执行 format.json 。我播放了格式响应的顺序，它仍然要求 format.json 。

However, that's causing my app to execute format.json. I played around with the order of the format responses and it still requests format.json.

respond_with(@project) do |format|
    format.html { render 'show'}
    format.json { render 'show'}
    format.js { render 'show'}
end

任何想法？

推荐答案

经过大量的试用和错误，我发现使用 * / * 的接受标头，如果您使用 respond_with ，您需要确保控制台顶部的 respond_to 符合所需的顺序...在我的情况下，这是正确的： / p>

After a lot of trial and error, I figured out that with an Accept Header of */*, and if you are using respond_with, you'll need to make sure the respond_to at the top of the controller matches the order you want... In my case, this is correct:

class ProjectsController < ApplicationController
  respond_to :html
  respond_to :json
  respond_to :js,
  ...

这不是

class ProjectsController < ApplicationController
  respond_to :json
  respond_to :html
  respond_to :js,
  ...

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