Granting/Updating Permission for Packages (#2)

Co-authored-by: Tim Lorsbach <tim@lorsba.ch>
Reviewed-on: enviPath/enviPy#2

epdb/models.py

@@ -83,8 +83,7 @@ class APIToken(models.Model):
 
 
 class Group(TimeStampedModel):
-    uuid = models.UUIDField(null=False, blank=False, verbose_name='UUID of this object', primary_key=True,
-                            default=uuid4)
+    uuid = models.UUIDField(null=False, blank=False, verbose_name='UUID of this object', unique=True, default=uuid4)
     name = models.TextField(blank=False, null=False, verbose_name='Group name')
     owner = models.ForeignKey("User", verbose_name='Group Owner', on_delete=models.CASCADE)
     description = models.TextField(blank=False, null=False, verbose_name='Descriptions', default='no description')
@@ -110,6 +109,15 @@ class Permission(TimeStampedModel):
     ]
     permission = models.CharField(max_length=32, choices=PERMS, null=False)
 
+    def has_read(self):
+        return self.permission in [p[0] for p in self.PERMS]
+
+    def has_write(self):
+        return self.permission in [self.WRITE[0], self.ALL[0]]
+
+    def has_all(self):
+        return self.permission == self.ALL[0]
+
     class Meta:
         abstract: True