backend/app/models.py

@@ -42,6 +42,7 @@ class User(UserMixin, db.Model):
     def enroll(self, c) -> bool:
         if not self.is_enrolled(c):
             self.enrolled_courses.append(c)
+            db.session.commit()
             return True
         return False
 

backend/app/routes.py

@@ -73,6 +73,7 @@ def register():
 
 
 @bp.route("/course", methods=["POST"])
+@login_required
 def create_course():
     data = request.get_json()
 
@@ -97,6 +98,7 @@ def create_course():
 
 
 @bp.route("/user/<int:id>/courses", methods=["GET"])
+@login_required
 def get_courses(id):
     u = User.query.get(id)
     d = {"courses": []}
@@ -104,3 +106,21 @@ def get_courses(id):
         d["courses"].append(c.to_dict())
     resp = jsonify(d)
     return resp
+
+
+@bp.route("/user/<int:uid>/enroll/<int:cid>", methods=["POST"])
+@login_required
+def enroll_student(uid, cid):
+    u = User.query.get(uid)
+    if not u:
+        return error_response(400, f"User with id {uid} does not exist")
+
+    c = Course.query.get(cid)
+    if not c:
+        return error_response(400, f"Course with id {cid} does not exist")
+
+    if not u.enroll(c):
+        return error_response(400, f"User {uid} is already enrolled in course {cid}")
+
+    resp = {"user": u.to_dict(), "course": c.to_dict()}
+    return jsonify(resp)