当Django`User`的主键是`CharField`时登录时出错

更新：

在Django 1.6上进行了测试，它可以正常工作并接受CharField作为id

您可以做的是使用Django的AbstractBaseUser编写自己的自定义模型，以及编写自己的PermissionsMixin，尽管这听起来很复杂，但实际上并不是您只需要从django.contrib.auth复制Django的代码并更改一行即可。代码

问题行是get_group_permissions函数中django.contrib.auth.backends中的行：

perms = Permission.objects.filter(**{user_groups_query: user_obj})

您可以将其更改为：

perms = Permission.objects.filter(**{user_groups_query + '__pk': user_obj})

虽然我的Django 1.6解决了这个问题

为了清楚起见，完整的解决方案如下：django.contrib.auth中的models.py从权限中导入AbstractBaseUser导入MyPermissionsMixin

class UserProfile(AbstractBaseUser, MyPermissionsMixin):
    id = models.CharField(primary_key=True, max_length=32, default=str(uuid.uuid4()).replace('-', ''))
    Telephone = models.CharField('Telephone', max_length=100, blank=True, null=True)
    Mobile = models.CharField('Mobile', max_length=100, blank=True, null=True)
    username = models.CharField(_('username'), max_length=30, unique=True,
                                help_text=_('Required. 30 characters or fewer. Letters, numbers and '
                                            '@/./+/-/_ characters'),
                                validators=[
                                    validators.RegexValidator(re.compile('^[\w.@+-]+$'), _('Enter a valid username.'),
                                                              'invalid')
                                ])
    first_name = models.CharField(_('first name'), max_length=30, blank=True)
    last_name = models.CharField(_('last name'), max_length=30, blank=True)
    email = models.EmailField(_('email address'), blank=True)
    is_staff = models.BooleanField(_('staff status'), default=False,
                                   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'), default=timezone.now)

    objects = UserManager()

    USERNAME_FIELD = 'username'
    REQUIRED_FIELDS = ['email']

    class Meta:
        verbose_name = _('user')
        verbose_name_plural = _('users')

    def get_absolute_url(self):
        return "/users/%s/" % urlquote(self.username)

    def get_full_name(self):
        """
        Returns the first_name plus the last_name, with a space in between.
        """
        full_name = '%s %s' % (self.first_name, self.last_name)
        return full_name.strip()

    def get_short_name(self):
        "Returns the short name for the user."
        return self.first_name

    def email_user(self, subject, message, from_email=None):
        """
        Sends an email to this User.
        """
        send_mail(subject, message, from_email, [self.email])

    def get_profile(self):
        """
        Returns site-specific profile for this user. Raises
        SiteProfileNotAvailable if this site does not allow profiles.
        """
        warnings.warn("The use of AUTH_PROFILE_MODULE to define user profiles has been deprecated.",
                      PendingDeprecationWarning)
        if not hasattr(self, '_profile_cache'):
            from django.conf import settings

            if not getattr(settings, 'AUTH_PROFILE_MODULE', False):
                raise SiteProfileNotAvailable(
                    'You need to set AUTH_PROFILE_MODULE in your project '
                    'settings')
            try:
                app_label, model_name = settings.AUTH_PROFILE_MODULE.split('.')
            except ValueError:
                raise SiteProfileNotAvailable(
                    'app_label and model_name should be separated by a dot in '
                    'the AUTH_PROFILE_MODULE setting')
            try:
                model = models.get_model(app_label, model_name)
                if model is None:
                    raise SiteProfileNotAvailable(
                        'Unable to load the profile model, check '
                        'AUTH_PROFILE_MODULE in your project settings')
                self._profile_cache = model._default_manager.using(
                    self._state.db).get(user__id__exact=self.id)
                self._profile_cache.user = self
            except (ImportError, ImproperlyConfigured):
                raise SiteProfileNotAvailable
        return self._profile_cache

Permissions.py创建一个名为Permissions.py的新文件，并在此处存储MyPermissionsMixin

    from __future__ import unicode_literals
    from django.contrib.auth import get_user_model
    from django.contrib.auth.models import Group, Permission

    from django.db import models
    from django.utils.translation import ugettext_lazy as _
    from django.utils import timezone

    from django.contrib import auth
    # UNUSABLE_PASSWORD is still imported here for backwards compatibility
    from django.contrib.auth.signals import user_logged_in


    def update_last_login(sender, user, **kwargs):
        """
        A signal receiver which updates the last_login date for
        the user logging in.
        """
        user.last_login = timezone.now()
        user.save(update_fields=['last_login'])


    user_logged_in.connect(update_last_login)


    class SiteProfileNotAvailable(Exception):
        pass


    def get_group_permissions(user_obj, obj=None):
        """
        Returns a set of permission strings that this user has through his/her
        groups.
        """
    if user_obj.is_anonymous() or obj is not None:
        return set()
    if not hasattr(user_obj, '_group_perm_cache'):
        if user_obj.is_superuser:
            perms = Permission.objects.all()
        else:
            user_groups_field = get_user_model()._meta.get_field('groups')
            user_groups_query = 'group__%s' % user_groups_field.related_query_name()
    try:
        perms = Permission.objects.filter(**{user_groups_query: user_obj})
    except:
        perms = Permission.objects.filter(**{user_groups_query + '__pk': user_obj})
    perms = perms.values_list('content_type__app_label', 'codename').order_by()
    user_obj._group_perm_cache = set(["%s.%s" % (ct, name) for ct, name in perms])
    return user_obj._group_perm_cache


def get_all_permissions(user_obj, obj=None):
    if user_obj.is_anonymous() or obj is not None:
        return set()
    if not hasattr(user_obj, '_perm_cache'):
        user_obj._perm_cache = set(
            ["%s.%s" % (p.content_type.app_label, p.codename) for p in user_obj.user_permissions.select_related()])
        user_obj._perm_cache.update(get_group_permissions(user_obj))
    return user_obj._perm_cache


def has_perm(user_obj, perm, obj=None):
    if not user_obj.is_active:
        return False
    return perm in get_all_permissions(user_obj, obj)


def has_module_perms(user_obj, app_label):
    """
    Returns True if user_obj has any permissions in the given app_label.
    """
    if not user_obj.is_active:
        return False
    for perm in get_all_permissions(user_obj):
        if perm[:perm.index('.')] == app_label:
            return True
    return False


def get_user(user_id):
    try:
        UserModel = get_user_model()
        return UserModel._default_manager.get(pk=user_id)
    except UserModel.DoesNotExist:
        return None


# A few helper functions for common logic between User and AnonymousUser.
def _user_get_all_permissions(user, obj):
    permissions = set()
    for backend in auth.get_backends():
        if hasattr(backend, "get_all_permissions"):
            if obj is not None:
                permissions.update(get_all_permissions(user, obj))
            else:
                permissions.update(get_all_permissions(user))
    return permissions


def _user_has_perm(user, perm, obj):
    for backend in auth.get_backends():
        if hasattr(backend, "has_perm"):
            if obj is not None:
                if has_perm(user, perm, obj):
                    return True
            else:
                if has_perm(user, perm):
                    return True
    return False


def _user_has_module_perms(user, app_label):
    for backend in auth.get_backends():
        if hasattr(backend, "has_module_perms"):
            if has_module_perms(user, app_label):
                return True
    return False


class MyPermissionsMixin(models.Model):
    """
    A mixin class that adds the fields and methods necessary to support
    Django's Group and Permission model using the ModelBackend.
    """
    is_superuser = models.BooleanField(_('superuser status'), default=False,
                                       help_text=_('Designates that this user has all permissions without '
                                                   'explicitly assigning them.'))
    groups = models.ManyToManyField(Group, verbose_name=_('groups'),
                                    blank=True, help_text=_('The groups this user belongs to. A user will '
                                                            'get all permissions granted to each of '
                                                            'his/her group.'))
    user_permissions = models.ManyToManyField(Permission,
                                              verbose_name=_('user permissions'), blank=True,
                                              help_text='Specific permissions for this user.')

    class Meta:
        abstract = True

    def get_group_permissions(self, obj=None):
        """
        Returns a list of permission strings that this user has through his/her
        groups. This method queries all available auth backends. If an object
        is passed in, only permissions matching this object are returned.
        """
        permissions = set()
        for backend in auth.get_backends():
            if hasattr(backend, "get_group_permissions"):
                if obj is not None:
                    permissions.update(get_group_permissions(self,
                                                                     obj))
                else:
                    permissions.update(get_group_permissions(self))
        return permissions

    def get_all_permissions(self, obj=None):
        return _user_get_all_permissions(self, obj)

    def has_perm(self, perm, obj=None):
        """
        Returns True if the user has the specified permission. This method
        queries all available auth backends, but returns immediately if any
        backend returns True. Thus, a user who has permission from a single
        auth backend is assumed to have permission in general. If an object is
        provided, permissions for this specific object are checked.
        """

        # Active superusers have all permissions.
        if self.is_active and self.is_superuser:
            return True

        # Otherwise we need to check the backends.
        return _user_has_perm(self, perm, obj)

    def has_perms(self, perm_list, obj=None):
        """
        Returns True if the user has each of the specified permissions. If
        object is passed, it checks if the user has all required perms for this
        object.
        """
        for perm in perm_list:
            if not self.has_perm(perm, obj):
                return False
        return True

    def has_module_perms(self, app_label):
        """
        Returns True if the user has any permissions in the given app label.
        Uses pretty much the same logic as has_perm, above.
        """
        # Active superusers have all permissions.
        if self.is_active and self.is_superuser:
            return True

        return _user_has_module_perms(self, app_label)