[Django]-Django form: what is the best way to modify posted data before validating?

by

38👍

✅

You should make request.POST(instance of QueryDict) mutable by calling copy on it and then change values:

post = request.POST.copy() # to make it mutable
post['field'] = value
# or set several values from dict
post.update({'postvar': 'some_value', 'var': 'value'})
# or set list
post.setlist('list_var', ['some_value', 'other_value']))

# and update original POST in the end
request.POST = post

QueryDict docs – Request and response objects

👤ndpu

6👍

You could also try using request.query_params.

  1. First, set the _mutable property of the query_params to True.

  2. Change all the parameters you want.

    request.query_params._mutable = True
request.query_params['foo'] = 'foo'

The advantage here is you can avoid the overhead of using request.POST.copy().

👤Govind S Menokee

0👍

You can do the following (as suggested by Antony Hatchkins)

If using DRF

request.data._mutable = True
request.data['key'] = value

In Django

request.POST._mutable = True
request.POST['key'] = value
👤DragonFire

Leave a comment