There is a single API application set up like so:
const express = require('express')
const app = express()
const router = require('express').Router()
...
route.post('/dogs', (req, res, next) => {
const dog = new Dog() // defined in the actual application
dog.validate() // error occurs here
.then(() => {
return res.status(201)
})
// [1]
})
...
app.use('/api/v1', router)
app.use(notFoundErrorHandler)
app.use(globalErrorHandler)
function notFoundErrorHandler (req, res, next) {
res.status(404)
res.send({error: 'Not found'})
}
function globalErrorHandler (err, req, res, next) {
if (err) {
res.status(err.status || 500)
res.json({error: err.message || err})
}
}
If there is a validation error, it does not reach the globalErrorHandler. However, catching and rethrowing the error can solve this issue [1]:
.catch(err => { return next(err) })
Is this behavior typical for Mongoose with an incomplete Promise implementation, or could it be implemented differently?
No errors are raised when using other methods such as save, find, etc.