Interception of the POST variable in the form of clean ()

Question

Is there an easy way to access the POST variable to perform some random checks in the method of cleaning the admin form field?

def clean_order_price(self):
  if not self.cleaned_data['order_price']:
    try:
      existing_price = ProductCostPrice.objects.get(supplier=supplier, product_id=self.cleaned_data['product'], is_latest=True)
    except ProductCostPrice.DoesNotExist:
      existing_price = None
    if not existing_price:
      raise forms.ValidationError('No match found, please enter new price')
    else:
      return existing_price.cost_price_gross
  else:
      return self.cleaned_data

I need to capture a post-provider variable that is not in this form, cleared data, because the provider field is part of the parent form. The only way I can get to grips is to access request.POST, but it doesn't have much success there.

Thanks

Answer 1

POST data is contained in self.data.