form = ContactForm(request.POST) # how to change form fields' values here? if form.is_valid(): message = form.cleaned_data['message'] Is there a good way to trim whitespace, modify some/all fields etc before validating data?
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3 Answers
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
1 Comment
Bob
That's what I've been looking for hours, thank you very much!
You could also try using request.query_params.
First, set the
_mutableproperty of thequery_paramstoTrue.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().
4 Comments
yofee
That's a feature of the Django REST framework. It doesn't ship with Django itself.
Antony Hatchkins
django has
request.POST._mutable with the same functionality
mitsu
Anyone with privileges, please correct the typo.
request.quer_params['foo'] = 'foo' to request.query_params['foo'] = 'foo'
scriptmonster
@mitsu After editing i saw your comment 😀
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 