#6 Added unenroll endpoint by sending DELETE request to enroll endpoint

backend/app/models.py

@@ -46,6 +46,13 @@ class User(UserMixin, db.Model):
             return True
         return False
 
+    def unenroll(self, c) -> bool:
+        if self.is_enrolled(c):
+            self.enrolled_courses.remove(c)
+            db.session.commit()
+            return True
+        return False
+
     def to_dict(self) -> dict:
         return {
             "id": self.id,