用gzip压缩的Rails json响应 [英] rails json response with gzip compression

问题描述

我有一个用Rails编写的api，它在每个请求上都会以JSON响应进行响应.

I have an api written in rails which on each request responds with a JSON response.

响应可能很大，因此我需要使用gzip压缩JSON响应.

The response could be huge, so i need to compress the JSON response using gzip.

想知道如何在Rails控制器中做到这一点?

Wondering how to do this in rails controller?

我已经添加了行

use Rack::Deflater

在config.ru

in config.ru

我还应该在呈现JSON的行中更改某些内容吗?

Should I also be changing something in the line which renders JSON?

render :json => response.to_json()

此外，我如何检查响应是否为gzip格式.

Also, how do i check if the response is in gzip format or not..??

我从终端发出了curl请求，我只看到普通的普通JSON.

I did a curl request from terminal, I see only the normal plain JSON.

推荐答案

对于响应采用gzip格式，我们不必更改render方法调用.
如果请求的标题为Accept-Encoding: gzip，Rails将使用gzip自动压缩JSON响应.

For the response to be in gzip format we don't have to change the render method call.
If the request has the header Accept-Encoding: gzip, Rails will automatically compress the JSON response using gzip.

如果您不希望用户发送带有预设标题的请求，则可以在呈现响应之前在控制器中手动将标题添加到请求中:

If you don't want the user to send a request with preset header., you can add the header to the request manually in the controller before rendering the response:

request.env['HTTP_ACCEPT_ENCODING'] = 'gzip'
render :json => response.to_json()

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