python - tutorial - FieldError at/admin/- Campo(s) desconocido(s)(added_on) especificado para UserProfile

django user model

Question

Estoy usando un modelo de usuario personalizado en Django. El modelo funciona bien y puede crear un usuario. Pero cuando intento acceder a la página de administración me arroja el error

FieldError at /admin/
Unknown field(s) (added_on) specified for UserProfile

El added_on tiene un atributo added_on . No puedo pensar en ninguna razón por la que esto se muestre. Si added_on atributo added_on del archivo admin.py, el panel de administración funciona.

Aquí está mi models.py

from django.db import models
from django.contrib.auth.models import User, BaseUserManager, AbstractBaseUser
from django.conf import settings
class UserProfileManager(BaseUserManager):
def create_user(self, email, username, name, password=None):
if not email:
raise ValueError(''Users must have an email address'')
user = self.model(
username=username,
name=name,
email=self.normalize_email(email),
)
user.set_password(password)
user.save(using=self._db)
return user
def create_superuser(self, email, username, name, password):
user = self.create_user(email=email,
password=password,
username=username,
name=name
)
user.is_admin = True
user.save(using=self._db)
return user
class UserProfile(AbstractBaseUser):
SHOPPER = 1
TECH_ENTHU = 2
TECH_JUNKIE = 3
TECH_NINJA = 4
TECH_GURU = 5
LEVELS = (
(SHOPPER, ''Shopper''),
(TECH_ENTHU, ''Tech Enthusiast''),
(TECH_JUNKIE, ''Tech Junkie''),
(TECH_NINJA, ''Tech Ninja''),
(TECH_GURU, ''Tech Guru'')
)
email = models.EmailField(max_length=255, unique=True)
username = models.CharField(max_length=100, unique=True)
name = models.CharField(max_length=255)
location = models.CharField(max_length=255, blank=True, null=True)
website = models.CharField(max_length=255, blank=True, null=True)
image_1 = models.CharField(max_length=255, blank=True, null=True)
image_2 = models.CharField(max_length=255, blank=True, null=True)
image_3 = models.CharField(max_length=255, blank=True, null=True)
points = models.PositiveIntegerField(default=0)
level = models.PositiveSmallIntegerField(choices=LEVELS, default=SHOPPER)
added_on = models.DateTimeField(auto_now_add=True)
is_active = models.BooleanField(default=True)
is_admin = models.BooleanField(default=False)
USERNAME_FIELD = ''email''
REQUIRED_FIELDS = [''username'', ''name'']
objects = UserProfileManager()
def get_full_name(self):
return self.name
def get_short_name(self):
return self.name
def __unicode__(self):
return self.email
def has_perm(self, perm, obj=None):
return True
def has_module_perms(self, app_label):
return True
@property
def is_staff(self):
return self.is_admin
class OldUser(models.Model):
old_user_id = models.BigIntegerField()
user = models.ForeignKey(settings.AUTH_USER_MODEL)
converted = models.BooleanField(default=False)

Aquí está mi admin.py

from django import forms
from django.contrib import admin
from django.contrib.auth.models import Group
from django.contrib.auth.admin import UserAdmin
from django.contrib.auth.forms import ReadOnlyPasswordHashField
from users.models import UserProfile
class UserCreationForm(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 = UserProfile
fields = (''username'', ''name'')
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(UserCreationForm, self).save(commit=False)
user.set_password(self.cleaned_data["password1"])
if commit:
user.save()
return user
class UserChangeForm(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 = UserProfile
fields = (''email'', ''password'', ''username'', ''name'', ''location'', ''website'', ''image_1'', ''image_2'', ''image_3'',
''points'', ''level'', ''added_on'', ''is_active'', ''is_admin'')
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"]
class UserProfileAdmin(UserAdmin):
# The forms to add and change user instances
form = UserChangeForm
add_form = UserCreationForm
# The fields to be used in displaying the User model.
# These override the definitions on the base UserAdmin
# that reference specific fields on auth.User.
list_display = (''email'', ''username'', ''name'', ''points'', ''level'', ''is_admin'')
list_filter = (''is_admin'',)
fieldsets = (
(None, {''fields'': (''email'', ''password'')}),
(''Personal info'', {''fields'': (''username'', ''name'', ''location'', ''website'', ''image_1'', ''image_2'', ''image_3'',
''points'', ''level'', ''added_on'')}),
(''Permissions'', {''fields'': (''is_admin'',)}),
)
# add_fieldsets is not a standard ModelAdmin attribute. UserAdmin
# overrides get_fieldsets to use this attribute when creating a user.
add_fieldsets = (
(None, {
''classes'': (''wide'',),
''fields'': (''email'', ''username'', ''name'', ''password1'', ''password2'')}
),
)
search_fields = (''email'',)
ordering = (''email'',)
filter_horizontal = ()
admin.site.register(UserProfile, UserProfileAdmin)
# Since we''re not using Django''s built-in permissions,
# unregister the Group model from admin.
admin.site.unregister(Group)

Aquí está el traceback

Environment:
Request Method: GET
Request URL: http://127.0.0.1:8000/admin/
Django Version: 1.6.2
Python Version: 2.7.3
Installed Applications:
(''django.contrib.admin'',
''django.contrib.auth'',
''django.contrib.contenttypes'',
''django.contrib.sessions'',
''django.contrib.messages'',
''django.contrib.staticfiles'',
''users'')
Installed Middleware:
(''django.contrib.sessions.middleware.SessionMiddleware'',
''django.middleware.common.CommonMiddleware'',
''django.middleware.csrf.CsrfViewMiddleware'',
''django.contrib.auth.middleware.AuthenticationMiddleware'',
''django.contrib.messages.middleware.MessageMiddleware'',
''django.middleware.clickjacking.XFrameOptionsMiddleware'')
Traceback:
File "/usr/local/lib/python2.7/dist-packages/django/core/handlers/base.py" in get_response
101. resolver_match = resolver.resolve(request.path_info)
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in resolve
318. for pattern in self.url_patterns:
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in url_patterns
346. patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
File "/usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py" in urlconf_module
341. self._urlconf_module = import_module(self.urlconf_name)
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module
40. __import__(name)
File "/home/jaskaran/coding/buyingiq/authentication/authentication/urls.py" in <module>
4. admin.autodiscover()
File "/usr/local/lib/python2.7/dist-packages/django/contrib/admin/__init__.py" in autodiscover
29. import_module(''%s.admin'' % app)
File "/usr/local/lib/python2.7/dist-packages/django/utils/importlib.py" in import_module
40. __import__(name)
File "/home/jaskaran/coding/buyingiq/authentication/users/admin.py" in <module>
36. class UserChangeForm(forms.ModelForm):
File "/usr/local/lib/python2.7/dist-packages/django/forms/models.py" in __new__
292. raise FieldError(message)
Exception Type: FieldError at /admin/
Exception Value: Unknown field(s) (added_on) specified for UserProfile

Answer 1

Tu problema es auto_now_add=True en ese campo. Consulte las notas en la documentación de DateField :

Tenga en cuenta que la fecha actual siempre se usa; no es solo un valor predeterminado que puede anular.

y

Tal como se implementa actualmente, establecer auto_now o auto_now_add en True hará que el campo tenga editable=False y blank=True set.

Dado que editable = False, no puede incluirlo en la lista de campos para ese formulario (puede ponerlo en readonly_fields , por supuesto).

Si desea que el valor tome la fecha de creación como predeterminada, pero aún así permita que se edite y anule, debe usar el default lugar:

added_on = models.DateTimeField(default=datetime.datetime.now)

(nota al margen, siempre debe usar el valor predeterminado para el valor predeterminado, sin los paréntesis que llaman).