Merge pull request #722 from basedosdados/staging

Staging

Author: rdahis

backend/apps/api/v1/models.py

@@ -476,7 +476,7 @@ class Meta:
 
     @property
     def full_slug(self):
-        if self.area.slug != "unknown":
+        if self.area:
             return f"{self.area.slug}_{self.slug}"
         return f"{self.slug}"