add c3nav.control app

src/c3nav/control/models.py

@@ -0,0 +1,45 @@
+from django.conf import settings
+from django.core.cache import cache
+from django.db import models
+from django.utils.translation import ugettext_lazy as _
+
+
+class UserPermissions(models.Model):
+    """
+    User Permissions
+    """
+    user = models.OneToOneField(settings.AUTH_USER_MODEL, on_delete=models.CASCADE, primary_key=True)
+    review_changesets = models.BooleanField(default=False, verbose_name=_('can review changesets'))
+    direct_edit = models.BooleanField(default=False, verbose_name=_('can activate direct editing'))
+    control_panel = models.BooleanField(default=False, verbose_name=_('can access control panel'))
+    grant_permissions = models.BooleanField(default=False, verbose_name=_('can grant control permissions'))
+    manage_announcements = models.BooleanField(default=False, verbose_name=_('manage announcements'))
+
+    class Meta:
+        verbose_name = _('User Permissions')
+        verbose_name_plural = _('User Permissions')
+        default_related_name = 'permissions'
+
+    @staticmethod
+    def get_cache_key(pk):
+        return 'control:permissions:%d' % pk
+
+    @classmethod
+    def get_for_user(cls, user, force=False) -> 'UserPermissions':
+        cache_key = cls.get_cache_key(user.pk)
+        result = None
+        if not force:
+            result = cache.get(cache_key, None)
+            for field in cls._meta.get_fields():
+                if not hasattr(result, field.attname):
+                    result = None
+                    break
+        if result:
+            return result
+        result = user.permissions
+        cache.set(cache_key, result, 900)
+
+    def save(self, *args, **kwargs):
+        super().save(*args, **kwargs)
+        cache_key = self.get_cache_key(self.pk)
+        cache.set(cache_key, self, 900)