在这里,我正在编写用于注册用户的序列化程序,并尝试使用validate_username
函数来验证用户名,但是没有用。
异常类型:TypeError异常值:字符串索引必须为 整数异常位置:validate_username中的... serializers.py, 40行
serializers.py
class UserSerializer(serializers.ModelSerializer):
profile = ProfileSerializer(required=False)
email = serializers.EmailField(validators=[UniqueValidator(queryset=get_user_model().objects.all())])
password1 = serializers.CharField(required=True, write_only=True)
password2 = serializers.CharField(required=True, write_only=True)
class Meta:
model = get_user_model()
fields = ['first_name', 'last_name', 'username', 'email', 'password1', 'password2', 'profile']
def validate_password1(self, password):
validators.validate_password(password=password,user=get_user_model())
def validate_password2(self, password):
validators.validate_password(password=password,user=get_user_model())
def validate(self, data):
if data['password1'] != data['password2']:
raise serializers.ValidationError("The two password fields didn't match.")
return data
def validate_username(self, validated_data):
username = validated_data['username']
if len(username) < 6 and len(username) > 15:
raise ValidationError('Username must be between 6 and 15 characters long')
return username
def create(self, validated_data):
user = get_user_model().objects.create(
username=validated_data['username'],
email=validated_data['email'],
first_name=validated_data['first_name'],
last_name=validated_data['last_name'],
)
user.set_password(validated_data['password2'])
user.is_staff = True
user.save()
profile_data = validated_data.pop('profile')
Profile.objects.create(
user=user, address=profile_data['address'], contact=profile_data['contact']
)
return user
答案 0 :(得分:1)
问题是,使用validate_<field_name>
方法而不是字典时,您是通过参数(在您的情况下为字符串)获取实际值的。因此,以下代码应对其进行修复:
def validate_username(self, username):
if len(username) < 6 or len(username) > 15:
raise ValidationError('Username must be between 6 and 15 characters long')
return username
答案 1 :(得分:0)
在功能validate_username中,您需要validated_data作为参数。 validate_是自定义的“字段级别”验证器,字段值是接收到的参数。一般来说,
def validate_<field-name>(self, field_name):
# Your code
关于采用更好的方法来验证密码,可以使用正则表达式。
例如
^(?=。* \ d)。{4,8} $
此密码的长度必须介于4到8位之间,并且至少包含一个数字。