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).