The following method verifies JWT and returns id and expiration.
verify(token, secret = "jwtSecret") {
console.log("verify jwt: ", secret);
return new Promise(function (resolve, reject) {
jwt.verify(
token,
_.get(strapi.plugins, ['users-permissions', 'config', secret]),
{},
function (err, tokenPayload = {}) {
if (err) {
return reject(new Error('Invalid token.'));
}
console.log(tokenPayload);
resolve(tokenPayload);
}
);
});
},
When I call verify, I am expecting to return the following object
Promise { { id: 77, iat: 1593603153, exp: 1596195153 } }
But I am unable to access the id of the object.
When I am doing console.log("user id: ", payload.id), the payload.id is showing up as undefined in console.
async refreshToken(ctx) {
const { token } = ctx.request.body;
const payload = strapi.plugins['users-permissions'].services.jwt.verify(token, "jwtRefreshSec");
console.log("auth: ", payload); // this log -> Promise { { id: 77, iat: 1593603153, exp: 1596195153 } }
console.log("user id: ", payload.id); // this log -> undefined
return data;
},
As Andreas suggested, it would be advisable to review how promises work.
From MDN:
The Promise object represents the eventual completion (or failure) of an asynchronous operation, and its resulting value.
A Promise is a proxy for a value not necessarily known when the promise is created.
In your first case (console.log("auth: ", payload);), the console.log function knows that it should print the value of the promise once it receives it.
In the 2nd case, (console.log("user id: ", payload.id);), the promise hasn't resolved by the time you try access the id property of the result.
There's 2 ways to resolve this issue.
refreshToken(ctx) {
const { token } = ctx.request.body;
const payload = strapi.plugins['users-permissions'].services.jwt.verify(token, "jwtRefreshSec")
.then(payload => {
console.log("auth: ", payload); // this log -> { id: 77, iat: 1593603153, exp: 1596195153 }
console.log("user id: ", payload.id); // this log -> 77
return data;
});
},
async refreshToken(ctx) {
const { token } = ctx.request.body;
const payload = await strapi.plugins['users-permissions'].services.jwt.verify(token, "jwtRefreshSec");
// Will wait for promise to resolve before continuing with await above
console.log("auth: ", payload); // this log -> { id: 77, iat: 1593603153, exp: 1596195153 }
console.log("user id: ", payload.id); // this log -> 77
return data;
},