Hi All ,
I am taking a full stack react course from an online learning platform, in
which I am using node and express as the server, passport for
authentication and MongoDB as the backend database. So I have a flow where
when the user logs in a cookie is attached to the user, so on subsequent
request from the user, the cookie is deserialized and the user record from
the DB is stored in the req.user.
So I have a billing system which uses the stripe, where when the amount is
charged
he can create surveys (say $1 for 1 credit). Now I have the user model in
the mongo db as
user:
{ _id: abc,
googleId: xyz,
__v: 0,
credits: 0 },
Once when the user pays the amount the credits has to be updated and it has
to be reflected in the front end in the header.
const keys = require('../config/keys')
const stripe=require('stripe')(keys.stripeSecretKey);
app.post('/api/stripe',async (req,res) => {
const charge = await stripe.charges.create({
amount: 500,
currency: "usd",
source: req.body.id, // obtained with Stripe.js
description: "$5 for 5 credits"
})
req.user.credits +=5;
const user = req.user.save();
});
};
My question is: How come changing the req.user and saving it updates the
user model in the DB. As in the above code, I could not see any import for
the mongoose user model?
I was expecting something like import the user model -> get the user id
from req.user -> then use findById() -> to identify the user in MongoDB and
then make the change in the credits.
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