how to alter/change the post data in django UpdateView
django, django-class-based-views, post, request
Solution
The `QueryDict` is mutable after you create its `.copy()`. See the docs.
Update Example:
class SomeUpdateView(UpdateView):
def post(self, request, **kwargs):
request.POST = request.POST.copy()
request.POST['some_key'] = 'some_value'
return super(SomeUpdateView, self).post(request, **kwargs)
Here is much broader discussion about the topic.
Furthermore, shouldn't this be done in `ModelForm` subclass? You're certainly aware you can set custom form as a `form_class` in `UpdateView`. Such a logic usually needs unit tests and it's much easier to unit test logic which sits in the form.
Problem
I am using django update view for my `model/records` editing stuff like below ``` class EditProductView(LoginRequiredMixin, UpdateView): model = Product def get_template_names(self): return ['website/product/edit_product.html'] def get_success_url(self): return reverse('product_details', args=[self.kwargs['pk']]) def get_context_data(self, **kwargs): publisher = Publisher.objects.get(product__id=self.kwargs['pk']) context = super(EditProductView, self).get_context_data(**kwargs) context.update( { 'publisher':publisher, } ) return context edit_product = EditProductView.as_view() ``` So what all i want/trying to do is alter(add some data, edit already submitted data according to website functionality) the `POST` data before submitting to form, So i know that `UpdateView` has some method def `def post(self, request, *args, **kwargs):` , but i dont know exactly how to use it Suppose below is the request.POST data i am getting ``` <QueryDict: {u'product_name': [u'Biscuit'], u'product_price': [u'1000'], u'product_tag': [u'']}> ``` So now i want to alter the above `QueryDict` and if the value of `product_tag` was empty i need assign some default one and submit with latest querdict Also i know that Querydict is mutable, but because of sure i need to edit the POST data, before `submitting/saving to database`, i need to make that querydict as dict, then edit it, and convert back to querdict So after all whats my question is - How can we alter the `POST` data in `UpdateView` before submitting/saving to database - Is the `post` method heplful?