change request.GET QueryDict values

Question

I want to change request.GET querydict object in django. I tried this but changes made by me are not reflected. I tried this

tempdict = self.request.GET.copy() # Empty initially
tempdict['state'] = ['XYZ',]
tempdict['ajaxtype'] = ['facet',]
print self.request.GET

I get

<QueryDict: {}> as my output

Is it possible to change the request.GET querydict object in django?

I have to categorize the input text entered by the user and then pass it to another function which uses request.GET qurydict to do further processing — Anurag Sharma, Oct 08 '13 at 12:06
Possible duplicate of [django modifying the request object](http://stackoverflow.com/questions/18930234/django-modifying-the-request-object) — Louis, May 13 '16 at 20:05
Possible duplicate of [django - why is the request.POST object immutable?](http://stackoverflow.com/questions/12611345/django-why-is-the-request-post-object-immutable) — Ciro Santilli OurBigBook.com, Jun 07 '16 at 17:27

Timmy O'Mahony · Accepted Answer · 2013-10-08T13:04:28.350

22

You can't change the request.GET or request.POST as they are instances of QueryDict which are immutable according to the docs:

QueryDict instances are immutable, unless you create a copy() of them. That means you can’t change attributes of request.POST and request.GET directly.

edited Oct 08 '13 at 13:04

answered Oct 08 '13 at 12:01

Timmy O'Mahony

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score 8 · Answer 2 · answered May 03 '21 at 12:26

Your code should work if you add one little step: you are now making a copy of the request.GET, but you have not assigned it back to the request. So it is just a standalone object which is not related to the request in any way.

This would the the necessary improvement:

tempdict = self.request.GET.copy()
tempdict['state'] = ['XYZ',]
tempdict['ajaxtype'] = ['facet',]
self.request.GET = tempdict  # this is the added line
print(self.request.GET)

I have tested it in writing custom middleware, but I assume it works the same way in all places.

change request.GET QueryDict values

2 Answers2

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