Convert role column to a new table

areas/apps/models.py

@@ -23,7 +23,7 @@ class AppRole(db.Model):
 
     user_id = db.Column(String(length=64), primary_key=True)
     app_id = db.Column(Integer, ForeignKey("app.id"), primary_key=True)
-    role = db.Column(String(length=64))
+    role_id = db.Column(Integer, ForeignKey("role.id"))
 
     def __repr__(self):
         return f"{self.role} for {self.user_id} on {self.app_id}"