1 files changed, 0 insertions, 25 deletions
diff --git a/doc/howtos/backend/exercise-constraint-python b/doc/howtos/backend/exercise-constraint-python
deleted file mode 100644
index 248507a241f..00000000000
--- a/doc/howtos/backend/exercise-constraint-python
+++ /dev/null
@@ -1,25 +0,0 @@
-# HG changeset patch
-# Parent 7a7d003fe38426a405ce0657a627a139133ec4dd
-# Parent  52f54b46487c8224a5aade4b921be77360ed3eae
-
-diff --git a/openacademy/models.py b/openacademy/models.py
---- a/openacademy/models.py
-+++ b/openacademy/models.py
-@@ -1,6 +1,6 @@
- # -*- coding: utf-8 -*-
- 
--from odoo import models, fields, api
-+from odoo import models, fields, api, exceptions
- 
- class Course(models.Model):
-     _name = 'openacademy.course'
-@@ -58,3 +58,9 @@ class Session(models.Model):
-                     'message': "Increase seats or remove excess attendees",
-                 },
-             }
-+
-+    @api.constrains('instructor_id', 'attendee_ids')
-+    def _check_instructor_not_in_attendees(self):
-+        for r in self:
-+            if r.instructor_id and r.instructor_id in r.attendee_ids:
-+                raise exceptions.ValidationError("A session's instructor can't be an attendee")