Mongoose not fetching data until I refresh the database connection - mongodb

Question

I am trying to re-fetch the data from MongoDB using mongoose whenever a user reloads the page. However, the old data stays there and the new data doesn't get fetched until I restart the server.
Here is the router:
router.post("/dashboard", (req, res) => {
const userId = req.body.userId;
User.findOne({ _id: userId }, (err, users) => {
if (err) {
console.log(err);
res.status(500).send();
} else {
router.get("/dashboard", (req, res, next) => {
const leagues = [users.leagues.premium, users.leagues.free];
if (err) return next(err);
res.status(200).send(leagues);
});
}
});
});
And here is the Actions (Redux):
export const fetchLeagues = userId => dispatch => {
axios.post("/api/leagues/dashboard", userId).then(
setTimeout(function() {
axios.get("/api/leagues/dashboard").then(leagues => {
dispatch({
type: GET_LEAGUES,
payload: leagues
});
});
}, 50)
);
};
The data must be fetched from a specific user, so that's why I am posting the user Id, then getting the data back. Not sure if this is the best way of doing this.
Just to clarify, I am using the MERN stack with redux and axios to execute this. I tried to use this: MongoDB does not refresh data automatically?, but I still can't get this thing to refresh/re-fetch the data when the router is called again. Thanks.

Answer 1

Doing a POST request then a GET request seems unnecessary here as you can just return the data in a single request.
The reason why the data is being persisted is because when you declare the router.get('/dashboard') route you are permanently hardcoding that route to have the values from the first request.
It's probably best to use a GET request, as that is what you are trying to do.
e.g.
router.get("/dashboard/:userId", (req, res) => {
const userId = req.params.userId;
User.findOne({ _id: userId }, (err, users) => {
if (err) {
console.log(err);
res.status(500).send();
} else {
const leagues = [users.leagues.premium, users.leagues.free];
if (err) return next(err);
res.status(200).send(leagues);
}
});
});
// Where userId is now a string
export const fetchLeagues = userId => dispatch => {
axios.get(`/api/leagues/dashboard/${userId}`).then(leagues => {
dispatch({
type: GET_LEAGUES,
payload: leagues
});
});
};