I have a pretty simple form:
from django import forms
class InitialSignupForm(forms.Form):
email = forms.EmailField()
password = forms.CharField(max_length=255, widget = forms.PasswordInput)
password_repeat = forms.CharField(max_length=255, widget = forms.PasswordInput)
def clean_message(self):
email = self.clean_data.get('email', '')
password = self.clean_data.get('password', '')
password_repeat = self.clean_data.get('password_repeat', '')
try:
User.objects.get(email_address = email)
raise forms.ValidationError("Email taken.")
except User.DoesNotExist:
pass
if password != password_repeat:
raise forms.ValidationError("The passwords don't match.")
Is this how custom form validation is done? I need to evaluate on email
that no users currently exist with that email address. I also need to evaluate that password
and password_repeat
match. How can I go about doing this?
To validate a single field on it's own you can use a clean_FIELDNAME() method in your form, so for email:
def clean_email(self):
email = self.cleaned_data['email']
if User.objects.filter(email=email).exists():
raise ValidationError("Email already exists")
return email
then for co-dependant fields that rely on each other, you can overwrite the forms clean()
method which is run after all the fields (like email
above) have been validated individually:
def clean(self):
form_data = self.cleaned_data
if form_data['password'] != form_data['password_repeat']:
self._errors["password"] = ["Password do not match"] # Will raise a error message
del form_data['password']
return form_data
I'm not sure where you got clean_message()
from, but that looks like it is a validation method made for a message
field which doesn't seem to exist in your form.
Have a read through this for more details: