Question

When I’m using a form I clean field data using Django forms but how do you clean variable data that’s passed by an URL?

For example I have an URL like this: http://mywebsite.com/tags/my-tag/ where my-tag is the variable that I’m passing to a function on my views.py.

I tried to use a Django form to clean the data but I’m getting en error saying “‘TagForm’ object has no attribute ‘cleaned_data’“.
I know my-form variable is reaching the tags function in the views.py since I’m able to show its content on a template so the problem is probably with the way I’m using the form.

views.py

def tags(request, my-tag):
    tagform = TagForm(request.GET)
    cleaned_dt = tagform.cleaned_data
    form_tag = cleaned_dt['tag']

forms.py

class TagForm(forms.Form):
    tag = forms.CharField()

Any ideas?

Answer 1

The cleaned_data dictionary attribute appears after you call is_valid method on your form.

def tags(request, my-tag):
    tagform = TagForm(request.GET)
    if tagform.is_valid():
        cleaned_dt = tagform.cleaned_data
        form_tag = cleaned_dt['tag']
    return render(request, "may_template.html", {"form":tagform})