Is there a simple way to catch an error in an API (server) that's using Node.js and Sequelize (Models)? Here is my code (it uses async + await):
const router = express.Router()
const { Operations } = require('../models')
router.post('/operations/add', async (req, res) => {
const operations = req.body
await operations.create(operations)
res.json(operations)
console.log('op added!')
})
router.put('/operations/update/:id', async (req, res) => {
const operationId = req.params.id
const operationUpdatedData = req.body
const operationById = await Operation.findOne({ where: { id: operationId } })
const operationUpdated = await operationById.update(operationUpdatedData)
res.json(operationUpdated)
console.log('op updated!')
})
router.delete('/operations/delete/:id', async (req, res) => {
const operationId = req.params.id
await Operations.destroy({ where: { id: operationId } })
res.send('op deleted!')
console.log('op deleted!')
})
module.exports = router
This is how I handle an error in the client:
axios.post(`http://localhost:9000/operations/add`, data)
.then(res => console.log(`op added! (${res.status})`))
.catch(err => console.log(`wrong! (${err.response.status} )`))
I don't want anything fancy, but feel free to try whatever you want!
If you want to handle the specific error, attach a .catch handler
router.post("/operations/add", async (req, res) => {
try {
const operations = req.body;
await operations.create(operations);
res.json(operations);
console.log("op added!");
} catch (error) {
// handle error here if you want to send on front simply send
console.log(error)
res.json(error.message)
}
});
If you want to handle errors more generally (i.e. show a nice error message, instead of killing your server, you might want to have a look at the unhandled exception
https://nodejs.org/api/process.html#process_event_uncaughtexception
If you are using express, it also contains some error handling facilities http://expressjs.com/en/guide/error-handling.html