Pass a dict as data to django-filter

[buzzeante]

In order to filter with multivalue params such as 'in' lookups there are two alternatives:

• ?multiparam=1,2,3
• ?multiparam=1&multiparam=2

The second option is a better approach when facing strings. However, by definition QueryDict does only take into account the last param included.

Django-filters expect a dict as data. To be congruent with what is passed in the request we need to transform query_params to a dict.

As can be seen in the test written, adhoc programming must be done also in django-filter to allow 'in' lookups but that's another issue.

Part of the solution was taken from @leo-the-manic in http://stackoverflow.com/questions/13349573/how-to-change-a-django-querydict-to-python-dict#answer-22100334

[carltongibson]

by definition QueryDict does only take into account the last param included.

This isn't quite right. QueryDict already supports multiple params — you need to use getlist to access more than the last one.

Django Filter should do the right thing here. See carltongibson/django-filter#137. There's two things going on there:

1. Support filtering on multiple values for the same param.
2. Support the compact 1,2,3 syntax.

No 1. should already work. No 2 will likely appear at some point (but there's a solution already available if you want it yourself.)

If you can provide a failing test case on Django Filter I'll happily look at this. A fix is even better :-)

Either way, I don't think this is DRF's problem: I'll close this — shout if I've missed the point.

[buzzeante]

I believe it's me who missed the point :$

You are completely right. I had a missleading interpretation of django-filters library. My apologies.

Awesome library btw. It's making my life easier :)

Cheers,
Javi