Cascade note deletion when the ticket is deleted

Fixes codeforpdx/dwellingly-app/issues/762

Author: NickSchimek

models/notes.py

@@ -9,7 +9,9 @@ class NotesModel(BaseModel):
     id = db.Column(db.Integer, primary_key=True)
     text = db.Column(db.Text)
     user_id = db.Column(db.Integer, db.ForeignKey("users.id"), nullable=False)
-    ticket_id = db.Column(db.Integer, db.ForeignKey("tickets.id"), nullable=False)
+    ticket_id = db.Column(
+        db.Integer, db.ForeignKey("tickets.id", ondelete="CASCADE"), nullable=False
+    )
 
     def json(self):
 

tests/integration/test_tickets.py

@@ -88,13 +88,16 @@ def test_create_ticket(self, valid_header, ticket_attributes):
 
 
 class TestTicketsDELETE(BaseConfig):
-    def test_delete_many(self, valid_header, create_ticket):
-        ticket_1 = create_ticket()
-        ticket_2 = create_ticket()
-        delete_ids = {"ids": [ticket_1.id, ticket_2.id]}
+    def test_delete_many(self, valid_header, create_note):
+        note_1 = create_note()
+        note_2 = create_note()
+        ticket_1 = note_1.ticket
+        ticket_2 = note_2.ticket
 
         response = self.client.delete(
-            self.endpoint, json=delete_ids, headers=valid_header
+            self.endpoint,
+            json={"ids": [ticket_1.id, ticket_2.id]},
+            headers=valid_header
         )
         db.session.rollback()