code.grnet.gr Git - flowspy/blob - longerusername/forms.py

   1 from django.utils.translation import ugettext as _
   2 from django.core.validators import MaxLengthValidator
   3 from django.contrib.auth import forms as auth_forms
   4 from django import forms
   5
   6 from longerusername import MAX_USERNAME_LENGTH
   7
   8 def update_username_field(field):
   9     field.widget.attrs['maxlength'] = MAX_USERNAME_LENGTH()
  10     field.max_length = MAX_USERNAME_LENGTH()
  11     field.help_text = _("Required, %s characters or fewer. Only letters, "
  12                         "numbers, and characters such as @.+_- are "
  13                         "allowed." % MAX_USERNAME_LENGTH())
  14
  15     # we need to find the MaxLengthValidator and change its
  16     # limit_value otherwise the auth forms will fail validation
  17     for v in field.validators:
  18         if isinstance(v, MaxLengthValidator):
  19             v.limit_value = MAX_USERNAME_LENGTH()
  20
  21 class UserCreationForm(auth_forms.UserCreationForm):
  22     def __init__(self, *args, **kwargs):
  23         super(UserCreationForm, self).__init__(*args, **kwargs)
  24         update_username_field(self.fields['username'])
  25
  26 class UserChangeForm(auth_forms.UserChangeForm):
  27     def __init__(self, *args, **kwargs):
  28         super(UserChangeForm, self).__init__(*args, **kwargs)
  29         update_username_field(self.fields['username'])
  30
  31 class AuthenticationForm(auth_forms.AuthenticationForm):
  32     def __init__(self, *args, **kwargs):
  33         super(AuthenticationForm, self).__init__(*args, **kwargs)
  34         update_username_field(self.fields['username'])