Rails：如何将替代的Accept：内容类型视为JSON？ [英] Rails: how to treat alternative Accept: content-types as JSON?

问题描述

到目前为止，我已经找到两种方法使 request.format.json？在Rails中正确（即，将传入请求视为JSON）。一种是如果您请求资源并以 .json 结尾，另一种是如果您提供标头 Accept：application / json 在您的请求中。每个工作都是独立的。

So far I've found two ways for request.format.json? to be true in Rails (i.e. where the incoming request is treated as JSON). One is if you request a resource and ending in .json the other is if you supply the header Accept: application/json in your request. Each work stand-alone.

对于第二种情况，我想注册自己的接受类型：

I want to register my own "accepts" type for this second case:

接受：application / vnd.myapp_v1 + json ，并将其像 $code> application一样被rails视为 json请求 / json ，而无需附加 .json 。

我的第一个想法是将我自己的MimeType注册为：json （在我的初始化代码内），但这实际上会破坏对application / json的支持，而不是我想做的。

My first thought was to register my own MimeType as :json (within my initialisation code), but this will actually break support for application/json, not what I want to do.

    Mime::Type.register "application/vnd.myapp_v1+json", :json  # my failed attempt

推荐答案

我们使用以下before_filter将iPhone请求移至应用中的HTML：

We move iPhone requests over to HTML in our app with a before_filter like so:

before_filter :determine_format

def determine_format
    request.format = :iphone if (request.env["HTTP_USER_AGENT"] =~ /iPhone/ && request.format == :html)
end

我想您可以使用特定格式执行类似的操作，也许是这样的：

I imagine you can do something similar with your specific format, maybe like this:

def determine_format
    request.format = :json if (request.format == 'application/vnd.myapp_v1+json')
end

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