Flask endpoint admin authority

Question

I have two users "admin" and "normal user". I created "rollId" for admin auth. For ex. admin's "rollId" is 1 and other one 0. Now, I want only the "normal user" to see the restaurants. I tried that;

This is my User model:

class User(Model):
   """ User model for storing user related data """
   id = Column(db.Integer, primary_key=True)
   email = Column(db.String(64), unique=True, index=True)
   username = Column(db.String(15), unique=True, index=True)
   name = Column(db.String(64))
   password_hash = Column(db.String(128))
   joined_date = Column(db.DateTime, default=datetime.utcnow)
   roleId = Column(db.Integer)

clientService:

class ClientService:
@staticmethod
def get_all_restorants():        
    if not (restorants := Restorant.query.all()):
        return err_resp("No restorant defined", 404)
    try:
        response = []
        for restorant in restorants:
            restorant_info = {"id": restorant.id, "name": restorant.name}
            response.append(restorant_info)
        resp = message(True, response)
        return resp, 200
    except Exception as e:
        print("Error User:", e)
        current_app.logger.error(e)
        return internal_err_resp()

And controller:

@api.route("/getRestorants")
class Client(Resource):
    @api.doc("get all restorants", response={
        200: ("Success"),
        400: "Service not available",
    })
    @jwt_required()
    def get(self):
        if User.roleId == 1:
            return err_resp("You are not authorized", 401)
        else:
            try:
                return ClientService.get_all_restorants()                            
            except Exception as e:
                print("Error User:", e)

It doesn't matter to me what the role is, I get the following output every time. I want it to give an error when rollid = 1.

{
    "status": true,
    "response": [
        {
            "id": 4,
            "name": "Dombili Burger"
        },
        {
            "id": 5,
            "name": "Dumblemumble"
        }
    ]
}

What is my problem?