#11 Change route so that caller doesn't have to pass user_id through request body

backend/app/routes.py

@@ -96,14 +96,9 @@ def create_course():
     return jsonify(c.to_dict())
 
 
-@bp.route("/course", methods=["GET"])
-def get_courses():
-    data = request.get_json()
-
-    if "user_id" not in data:
-        return error_response(400, "Must supply user_id")
-
-    u = User.query.get(data["user_id"])
+@bp.route("/user/<int:id>/courses", methods=["GET"])
+def get_courses(id):
+    u = User.query.get(id)
     d = {"courses": []}
     for c in u.enrolled_courses.all():
         d["courses"].append(c.to_dict())