API request sent twice

[Alex Arshavski]

Hi,

I have a django app with the rest framework.

I have the following settings:

REST_FRAMEWORK = {

   ...

    'DEFAULT_RENDERER_CLASSES': (

        'rest_framework.renderers.UnicodeJSONRenderer',

        'rest_framework.renderers.BrowsableAPIRenderer',

    ),

   ...

}

For some reason when I call any API via the browser, I see 2 same requests in my log:

[20/May/2014 07:19:30] "GET /api/v1/ HTTP/1.1" 200 8899

[20/May/2014 07:19:30] "GET /api/v1/ HTTP/1.1" 200 1625

I get only one request if I call the same api via curl or via ajax call from the browser console.

I also get only one request if I type in the browser any other app url except apis.

If I call any API with "?format=json", I get only one request.

What I noticed is that on the first call I go through BrowsableAPIRenderer and UnicodeJSONRenderer and on the second call I go only through UnicodeJSONRenderer.

You can also see that the response sizes are different.

Do you have any idea why every API get called twice?

Thanks, Alex A.

[Reinout van Rees]

On 20-05-14 09:43, Alex Arshavski wrote:
> For some reason when I call any API via the browser, I see 2 same
> requests in my log:
>
> [20/May/2014 07:19:30] "GET /api/v1/ HTTP/1.1" 200 8899
> [20/May/2014 07:19:30] "GET /api/v1/ HTTP/1.1" 200 1625
>
> I get only one request if I call the same api via curl or via ajax call
> from the browser console.
> I also get only one request if I type in the browser any other app url
> except apis.
> If I call any API with "?format=json", I get only one request.
> What I noticed is that on the first call I go through
> BrowsableAPIRenderer and UnicodeJSONRenderer and on the second call I go
> only through UnicodeJSONRenderer.
> You can also see that the response sizes are different.
> Do you have any idea why every API get called twice?

Well, in the end it is the *browser* that calls the API twice.
Django isn't forcing it to do that.
The only way django could force the API to be called twice is by sending
a "304 redirect", but what you see is that it is a regular "200 OK", so
that's not the problem.

=> There's something in your javascript, I presume.



Reinout

--
Reinout van Rees http://reinout.vanrees.org/
rei...@vanrees.org http://www.nelen-schuurmans.nl/
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