Question

OK, trying to add a clean method to a ModelForm in Django. I’m adding a simple raise statement just to see if it works, and instead of my message, I get “Unidentified Errors. Please notify…”

Here’s my (simple) test:

class ConfigurationForm(forms.ModelForm):
    ...

    def clean(self):
        cleaned_data = self.cleaned_data
        typeid = cleaned_data.get("typeid")
        value = cleaned_data.get("value")  

        if value and typeid:
            raise forms.ValidationError("this is the error")        

I couldn’t even find a reference to “Unidentified Errors” anywhere in the django code base. Thanks in advance for your help.

Answer 1

Is your clean method returning the cleaned_data? If you look at the docs here:

https://docs.djangoproject.com/en/dev/ref/forms/validation/#cleaning-and-validating-fields-that-depend-on-each-other

you’ll notice you have to make sure to return self.cleaned_data. Furthermore, don’t raise validation errors; instead delete the invalid field from the data (again, as you have to return it)

So:

def clean(self):
    typeid = cleaned_data.get("typeid", False)
    value = cleaned_data.get("value", False)  
    if value and typeid:
         self._errors["typeid"] = self.error_class(["Some error has happened"])
         del(self.cleaned_data['typeid'])   
    return self.cleaned_data