models.py

class MyUserManager(BaseUserManager):
    def create(self, email, name, birthday, sex, password):
        return self.create_user(email=email,
                                password=password,
                                name=name,
                                birthday=birthday,
                                sex=sex,
        )

    def create_user(self, email, name, birthday, sex, password):
        if not email:
            raise ValueError(_('email cannot be blank.'))
 
        user = self.model(
            email=MyUserManager.normalize_email(email),
            name=name,
            birthday=birthday,
            sex=sex,
            is_active=True,
        )

        user.set_password(password)
        user.save(using=self._db)
        return user
 
    def create_superuser(self, email, name, birthday, sex, password):
        user = self.create_user(email=email,
            password=password,
            name=name,
            birthday=birthday,
            sex=sex,
        )
        user.is_staff=True
        user.is_superuser=True
        user.is_admin=True
        user.save(using=self._db)

        return user

class User(AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(max_length=254, unique=True, db_index=True)
    name = models.CharField(max_length=254)
    birthday = models.DateField()
    sex = models.SmallIntegerField()

    dateOfRecevingLastQuestion = models.DateField(
        default=date.today()-timedelta(days=1)
    )
    questionOfToday = models.ForeignKey(Question, null=True, blank=True)
    constellation = models.ForeignKey(Constellation, null=True, blank=True)
    switch = models.BooleanField(default=False)

    creation = models.DateTimeField(auto_now_add=True)
    modification = models.DateTimeField(auto_now=True)

    objects = MyUserManager()

    is_staff = models.BooleanField(default=False, blank=True,)
    is_active = models.BooleanField(default=True, blank=True,)

    def __unicode__(self):
        return self.email

    def has_perm(self, perm, obj=None):
        return super(VomUser, self).has_perm(perm, obj)

    def has_module_perms(self, app_label):
        return super(VomUser, self).has_module_perms(app_label)

    def get_short_name(self):
        return self.name

    def get_username(self):
        return self.name

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['name', 'birthday', 'sex', ]

serializers.py

class UserSerializer(serializers.HyperlinkedModelSerializer):
    password2 = serializers.CharField()

    class Meta:
        model = User
        fields = ('url', 'id', 'email', 'sex', 'birthday',
                  'name', 'password', 'password2')
        # read_only_fields = ('email',)
        write_only_fields = ('password',)

    def __init__(self, *args, **kwargs):
        # Don't pass the 'fields' arg up to the superclass
        fields = kwargs.pop('fields', None)

        # Instantiate the superclass normally
        super(UserSerializer, self).__init__(*args, **kwargs)

        if fields:
            # Drop any fields that are not specified in the `fields` argument.
            allowed = set(fields)
            existing = set(self.fields.keys())
            for field_name in existing - allowed:
                self.fields.pop(field_name)

    def restore_object(self, attrs, instance=None):
        user = super(UserSerializer, self).restore_object(attrs, instance)
        if instance is None:
            user.set_password(attrs['password'])
        return user

    def to_native(self, obj):
        if 'password2' in self.fields:
            del self.fields['password2']
        return super(UserSerializer, self).to_native(obj)

    def validate_sex(self, attrs, source):
        if attrs['sex'] not in (0, 1):
            raise serializers.ValidationError(
                _("You must choice '1' or '0'. '1' means male and '0' means" +
                    " female. Your input: '%(value)s'"),
                code='invalid',
                params={'value': attrs['sex']}
            )
        return attrs

    def validate_password2(self, attrs, source):
        # http://goo.gl/U7FGWZ
        if attrs.get('password') == attrs.pop('password2'):
            return attrs
        raise serializers.ValidationError(
            _("This field must be matched by password field"),
            code='password_mismatch',
        )