Hidden field in Django form not in cleaned_data

Question

I have this form:

class CollaboratorForm(forms.Form):
    user = forms.CharField(label="Username",max_length=100)
    canvas = forms.IntegerField(widget=forms.HiddenInput)
    ....
    def clean_user(self):
        user = self.cleaned_data['user']
        canvas = self.cleaned_data['canvas']

In the view I'm simply calling

if form.is_valid():

I get the error:

KeyError at /canvas/1/add-collaborator/
'canvas'

According to firebug the value is posting, it's just doesn't seem to be making it to my clean function. Am I doing it wrong?

EDIT: Post data

canvas  1
csrfmiddlewaretoken 2cb73be791b32ca9a41566082c804312
user    username

EDIT2: I would also be willing to take an answer that could tell me how to send the primary key to the clean_user function, where the primary key is the /1/ in the example url above. The function in the view that is called is:

def canvas_add_collaborator(request, pk):

So I would want to send the pk to the clean_user function which would solve my problem by not needing the hidden field.

Answer 1

You need to change the method name to clean(), not clean_user(). 'canvas' is not in the cleaned_data if you are just validating the user field.