Hm.. I am not extending User Model.
I lost one class, this is real example:
Create APPs: core
SETTINGS:
#Django 1.5
AUTH_USER_MODEL = 'core.Partners'
MODELS:
# -*- coding: utf-8 -*-
from django.db import models
from django.contrib.contenttypes.models import ContentType
from django.contrib.contenttypes import generic
from django.utils.translation import ugettext_lazy as _
from django.contrib.auth.models import BaseUserManager, AbstractBaseUser,
PermissionsMixin
from django.conf import settings
class CreateModified(models.Model):
date_create = models.DateTimeField(auto_now_add=True)
date_modified = models.DateTimeField(auto_now=True)
user_create_fk = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='%(app_label)s_%(class)s_usercreate', blank=True,null=True)
user_modified_fk = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='%(app_label)s_%(class)s_userchange', blank=True,null=True)
class Meta:
abstract = True
class Addresses(CreateModified):
"""
Fields extends from CreateModified
date_create = models.DateTimeField(auto_now_add=True)
date_modified = models.DateTimeField(auto_now=True)
THIS IS PROBLEM:
user_create_fk = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='%(app_label)s_%(class)s_usercreate', blank=True,null=True)
user_modified_fk = models.ForeignKey(settings.AUTH_USER_MODEL,
related_name='%(app_label)s_%(class)s_userchange', blank=True,null=True)
"""
name = models.CharField(max_length=200, verbose_name='Nazwa')
street = models.CharField(max_length=200, verbose_name='Ulica')
no_house = models.IntegerField(verbose_name='Numer budynku')
no_local = models.IntegerField(verbose_name='Numer lokalu', blank=True,
null=True)
postal_code = models.CharField(max_length=200, verbose_name='Kod
pocztowy')
city = models.CharField(max_length=200, verbose_name='Miasto')
region = models.CharField(max_length=200, verbose_name='Województwo')
content_type = models.ForeignKey(ContentType,verbose_name='Rodzaj
modelu', related_name="content_type_%(class)s",)
object_id = models.PositiveIntegerField(verbose_name='Rodzaj obiekt',
db_index=True)
content_object = generic.GenericForeignKey('content_type', 'object_id')
class Partners(CreateModified, AbstractBaseUser, PermissionsMixin):
login = models.CharField(max_length=200, verbose_name='Login',
help_text=_('Required. 30 characters or fewer. Letters, numbers and
@/./+/-/_ characters'), unique=True, db_index=True)
company = models.BooleanField(verbose_name='Firma/Prywatny')
company_name = models.CharField(max_length=200, verbose_name='Nazwa
firmy', blank=True, null=True)
www = models.URLField(verbose_name='Strona internetowa', blank=True,
null=True)
name = models.CharField(max_length=200, verbose_name='Imię', blank=True,
null=True)
surname = models.CharField(max_length=200, verbose_name='Nazwisko',
blank=True, null=True)
phone = models.CharField(max_length=200, verbose_name='Telefon', blank=
True, null=True)
email = models.EmailField(verbose_name='Email', blank=True, null=True)
regulations = models.BooleanField(verbose_name='Regulamin', default=True
)
date_of_birth = models.DateField(verbose_name='Data urodzenia', blank=
True, null=True)
is_staff = models.BooleanField(_('staff status'), default=True,
help_text=_('Designates whether the user can log into this admin site.'))
is_active = models.BooleanField(_('active'), default=True,
help_text=_('Designates
whether this user should be treated as active. Unselect this instead of
deleting accounts.'))
date_joined = models.DateTimeField(_('date joined'), auto_now_add=True)
objects = PartnersManager()
USERNAME_FIELD = 'login'
REQUIRED_FIELDS = []
def get_full_name(self):
return '%s %s' % (self.name, self.surname)
def get_short_name(self):
return self.login
def __unicode__(self):
return self.login
class Meta:
verbose_name = "Użytkownik"
verbose_name_plural = "Użytkownicy"
ordering = ['id']
get_latest_by = "id"
FORMS:
# -*- coding: utf-8 -*-
from django import forms
from django.contrib.auth.forms import ReadOnlyPasswordHashField
from core.models import Partners, Addresses
from django.forms import widgets
from django.utils.translation import ugettext_lazy as _
class PartnersCreationForm(forms.ModelForm):
"""A form for creating new users. Includes all the required fields,
plus a repeated password."""
password1 = forms.CharField(label='Password',
widget=forms.PasswordInput)
password2 = forms.CharField(label='Password confirmation',
widget=forms.PasswordInput)
class Meta:
model = Partners
fields = ('login',)
def clean_password2(self):
# Check that the two password entries match
password1 = self.cleaned_data.get("password1")
password2 = self.cleaned_data.get("password2")
if password1 and password2 and password1 != password2:
raise forms.ValidationError("Passwords don't match")
return password2
def save(self, commit=True):
# Save the provided password in hashed format
user = super(PartnersCreationForm, self).save(commit=False)
user.set_password(self.cleaned_data["password1"])
if commit:
user.save()
return user
class PartnersChangeForm(forms.ModelForm):
"""A form for updating users. Includes all the fields on
the user, but replaces the password field with admin's
password hash display field.
"""
password = ReadOnlyPasswordHashField()
class Meta:
model = Partners
def clean_password(self):
# Regardless of what the user provides, return the initial value.
# This is done here, rather than on the field, because the
# field does not have access to the initial value
return self.initial["password"]
ADMIN:
# -*- coding: utf-8 -*-
from django.contrib import admin
from core.models import Partners, Addresses
from django.contrib.auth.admin import UserAdmin
from core.forms import PartnersChangeForm, PartnersCreationForm
from django.contrib.contenttypes import generic
class AddressAdminInline(generic.GenericStackedInline):
model = Addresses
ct_field = "content_type"
ct_fk_field = "object_id"
extra = 1
max_num = 1
class PartnersAdmin(UserAdmin):
form = PartnersChangeForm
add_form = PartnersCreationForm
list_display = ('login', 'name', 'surname', 'is_superuser')
list_filter = ('is_superuser',)
save_on_top = True
inlines = [
AddressAdminInline
]
fieldsets = (
(None, {
'fields': ('login', 'password')
}),
('Personal info', {
'fields': ('email', 'www', 'date_of_birth')
}),
('Personal info 2', {
'fields': ('company','company_name', 'name', 'surname', 'phone',
'regulations' )
}),
('Permissions', {
'fields': ('is_superuser', 'is_staff', 'is_active', 'groups',
'user_permissions')
}),
('Important dates', {
'fields': ('last_login',)
}),
)
add_fieldsets = (
(None, {
'classes': ('wide',),
'fields': ('login', 'password1', 'password2')}
),
)
search_fields = ('login',)
ordering = ('login',)
filter_horizontal = ('groups', 'user_permissions')
admin.site.register(Partners, PartnersAdmin)
admin.site.register(Addresses)
if the class Addresses not extends class CreateModified the example works
correctly
The problem is the existing 2 ForeignKey field in CreateModified to Partner:
user_create_fk
user_modified_fk
and this field is extend in Addresses.
How to resolve this problem? Each class must contain a field of
CreateModified Class?
Only Partners not contains field of CreateModified.
> when run server used"./manage.py runserver" and go to User in
> DjangoAdminPanel i show:
>
> Exception at /admin/core/partners/1/
>
> <class 'core.models.Addresses'> has more than 1 ForeignKey to <class
> 'core.models.Partners'>
>
> Request Method:GETRequest
> URL:http://localhost:8000/admin/core/partners/1/Django
> Version:1.5c2Exception Type:ExceptionException Value:
>
> <class 'core.models.Addresses'> has more than 1 ForeignKey to <class
> 'core.models.Partners'>
>
> Exception Location:/Library/Python/2.7/site-packages/django/forms/models.py
> in _get_foreign_key, line 825Python Executable:/usr/bin/pythonPython
> Version:2.7.2
> Traceback:
> File "/Library/Python/2.7/site-packages/django/core/handlers/base.py" in
> get_response
> 92. response = middleware_method(request)
> File "/Library/Python/2.7/site-packages/django/utils/importlib.py" in
> import_module
> 35. __import__(name)
> File "/Users/user/projects/project-name/project-name/urls.py" in <module>
> 6. admin.autodiscover()
> File "/Library/Python/2.7/site-packages/django/contrib/admin/__init__.py"
> in autodiscover
> 29. import_module('%s.admin' % app)
> File "/Library/Python/2.7/site-packages/django/utils/importlib.py" in
> import_module
> 35. __import__(name)
> File "/Users/user/projects/project-name/core/admin.py" in <module>
> 125. admin.site.register(Partners, PartnersAdmin)
> File "/Library/Python/2.7/site-packages/django/contrib/admin/sites.py" in
> register
> 98. validate(admin_class, model)
> File
> "/Library/Python/2.7/site-packages/django/contrib/admin/validation.py" in
> validate
> 189. validate_inline(inline, cls, model)
> File
> "/Library/Python/2.7/site-packages/django/contrib/admin/validation.py" in
> validate_inline
> 200. fk = _get_foreign_key(parent_model, cls.model,
> fk_name=cls.fk_name, can_fail=True)
> File "/Library/Python/2.7/site-packages/django/forms/models.py" in
> _get_foreign_key
> 825. raise Exception("%s has more than 1 ForeignKey to %s" %
> (model, parent_model))
>
> Exception Type: Exception at /admin/core/partners/1/
> Exception Value: <class 'core.models.Addresses'> has more than 1
> ForeignKey to <class 'core.models.Partners'
>
> Where is the problem? Please, help... ;)
>
>
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