配置 RegexField 仅接受连字符 (-) 和数字 - Django Rest Framework

Question

希望你们帮我配置 RegexField 仅在 Django Rest Framework 中接受连字符 (-) 和数字

现在我配置：

username = RegexField(regex=r'^[\d-]+$', required=True, max_length=50)

我的序列化器：

class UserSignUpSerializer(ModelSerializer):
    username = RegexField(regex=r'^[\d-]+$', required=True, max_length=50)
    email = EmailField(required=True, allow_blank=False, max_length=50)
    password = CharField(required=True, allow_blank=False, max_length=20)
    class Meta:
        model = User
        fields = [
            'username',
            'email',
            'password'
        ]
    extra_kwargs = {"password": {"write_only": True}}

这不是工作！

提前致谢！

Answer 1

该正则表达式允许任何字母数字字符（a to z、A to Z和0 to 9）。

您正在寻找：

# \d         allows only numeric digits
# - or \-    allows only hyphen
# [\d-]      allows a single character, either a digit or a hyphen
# [\d-]+     allows for more than one character, but a minimum of one is required
# ^[\d-]+$   the whole input string must match the regular expression   
RegexField(regex=r'^[\d-]+$', required=True, max_length=50)