+
+ # Associated users
+ # XXX ok these could stand to do the filtering sql-side
+ @property
+ def artists(self):
+ return (au.user for au in self.art_users if au.type == ArtUserType.BY)
+
+ @property
+ def recipients(self):
+ return (au.user for au in self.art_users if au.type == ArtUserType.FOR)
+
+ @property
+ def participants(self):
+ return (au.user for au in self.art_users if au.type == ArtUserType.OF)
+
+class ArtUserType(object):
+ BY = 1
+ FOR = 2
+ OF = 3
+
+class ArtUser(Entity):
+ art = ManyToOne('Art', required=True)
+ user = ManyToOne('User', required=True)
+ type = Field(Integer, required=True) # ArtUserType
+
+ # TODO: admin log ought to remember who confirmed the relation.
+ # (tag history will remember who proposed it)