I have a React application with a Node.js backend.
I have this route on the backend:
router.put(
'/testimonial/:testimonialId/:action',
[authenticate, validateUser],
async (req, res) => {
if (req.params.action === 'ACCEPT') {
const { err, status, data } =
await notificationController.acceptTestimonial(
req.params.testimonialId,
req.user._id
);
res.status(status).send({ err, data });
} else if (req.params.action === 'REJECT') {
const { err, status, data } =
await notificationController.rejectTestimonial(
req.params.testimonialId,
req.user
);
res.status(status).send({ err, data });
}
}
);
These are the corresponding Controllers: (acceptTestimonial/rejectTestimonial)
const acceptTestimonial = async (testimonialId, userId) => {
try {
await Users.findOne({ _id: userId }, async function (err, creator) {
if (err) return { err, status: 404, data: null };
else {
const updatedTestimonials = creator.testimonials.map((testimonial) => {
if (testimonial._id == testimonialId) {
testimonial.status = 'PUBLISHED';
}
return testimonial;
});
creator.testimonials = updatedTestimonials;
await creator.save();
return { err: null, status: 200, data: creator };
}
});
} catch (err) {
return { err: err.toString(), status: 500, data: null };
}
};
const rejectTestimonial = async (testimonialId, userId) => {
try {
await Users.findOne({ _id: userId }, async function (err, creator) {
if (!creator)
return { err: 'Creator not found!', status: 404, data: null };
else {
const updatedTestimonials = creator.testimonials.map((testimonial) => {
if (testimonial._id === testimonialId) {
testimonial.status = 'REJECTED';
}
return testimonial;
});
creator.testimonials = updatedTestimonials;
await creator.save();
return { err: null, status: 200, data: creator };
}
});
} catch (err) {
return { err: err.toString(), status: 500, data: null };
}
};
When this route runs and performs the operations, I get this error in the console
UnhandledPromiseRejectionWarning: TypeError: Cannot destructure property 'err' of '(intermediate value)' as it is undefined.
I'm unable to figure out what the problem is, is there a problem with destructuring or passing values ?
Thanks in advance.
CodePudding user response:
it is because, you aren't "returning" anything in try
block of your controllers. The return
statement is actually of callback function.
await
is used to replace callback & promise.then
so you have to return
something in try
block. You can achieve this like:
const rejectTestimonial = async (testimonialId, userId) => {
try {
// await Users.findOne({ _id: userId }, async function (err, creator) {
// if (!creator)
// return { err: 'Creator not found!', status: 404, data: null };
// else {
// const updatedTestimonials = creator.testimonials.map((testimonial) => {
// if (testimonial._id === testimonialId) {
// testimonial.status = 'REJECTED';
// }
// return testimonial;
// });
// creator.testimonials = updatedTestimonials;
// await creator.save();
// return { err: null, status: 200, data: creator };
// }
// });
//