Question

I have run into the following error trying to create a user in django:

>>> email = '[e-mail]'
>>> user_object = User.objects.create_user(username=email, email=email, password='password')
Data truncated for column 'username' at row 1

It seems Django has a limit on the number of chars allowed in a username. How would I get around this?

Answer 1

You have to modify the username length field so that syncdb will create the proper length varchar and you also have to modify the AuthenticationForm to allow greater values as well or else your users won’t be able to log in.

from django.contrib.auth.forms import AuthenticationForm

AuthenticationForm.base_fields['username'].max_length = 150
AuthenticationForm.base_fields['username'].widget.attrs['maxlength'] = 150
AuthenticationForm.base_fields['username'].validators[0].limit_value = 150