How to return a real empty response in Rails

I’m building a JSON API using rails. In several places I only need to send a 200 http code, without response body.

So, I used the head method:

head :ok

But this returns a response body with one blank character, this single space body causes the mobile client to fail (parse error). Below the response (notice the Content-Length):

HTTP/1.1 200 OK
Server: nginx/0.7.67
Date: Tue, 06 Sep 2011 14:13:55 GMT
Content-Type: text/html; charset=utf-8
Connection: keep-alive
Piictu_version: 1.0.14
Cache-Control: no-cache
Content-Length: 1
X-Ua-Compatible: IE=Edge,chrome=1
X-Runtime: 0.273965

So, I created a render_ok method to use instead of head:

def render_ok
  response.headers['Cache-Control'] = 'no-cache'
  render json: ''
end

And now the response is:

HTTP/1.1 200 OK
Server: nginx/0.7.67
Date: Tue, 06 Sep 2011 16:14:05 GMT
Content-Type: application/json; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Cache-Control: no-cache
Etag: "d41d8cd98f00b204e9800998ecf8427e"
Piictu_version: 1.0.14
X-Ua-Compatible: IE=Edge,chrome=1
X-Runtime: 0.224352

Now the Content-Length header is not present :). I use render json: '', because I want the Content-Type to be application/json, but you can use render text: '' too.

6 Notes/ Hide

  1. edgar posted this

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