chore(auth): add username regex

Author: duanhongyi

rootfs/api/models.py

@@ -1,11 +1,19 @@
 from django.db import models
+from django.conf import settings
+from django.contrib.auth import validators
 from django.contrib.auth.models import AbstractUser
 from django.utils.translation import gettext_lazy as _
 
 from oauth2_provider.models import AbstractApplication
 
 
 class User(AbstractUser):
+    username_validator = validators.UnicodeUsernameValidator(
+        regex=settings.USERNAME_REGEX,
+        message=_("Enter a valid username. This value may match the regex {}.".format(
+            settings.USERNAME_REGEX
+        ))
+    )
     email = models.EmailField(_('email address'), unique=True)
 
     @property

rootfs/api/settings/production.py

@@ -399,5 +399,8 @@
 EMAIL_USE_TLS = os.environ.get('EMAIL_USE_TLS', 'false').lower() == "true"
 EMAIL_USE_SSL = os.environ.get('EMAIL_USE_SSL', 'false').lower() == "true"
 
+# username regex
+USERNAME_REGEX = os.environ.get('USERNAME_REGEX', '^[a-z][a-z0-9]{4,}$')
+# hcaptcha config
 H_CAPTCHA_KEY = os.environ.get("H_CAPTCHA_KEY")
 H_CAPTCHA_SECRET = os.environ.get("H_CAPTCHA_SECRET")