I am building mock restful API to learn better. I am using MongoDB and node.js, and for testing I use postman.
I have a router that sends update request router.patch
. In my DB, I have name
(string), price
(number) and imageProduct
(string - I hold the path of the image).
I can update my name
and price
objects using raw-format on the postman, but I cannot update it with form-data . As I understand, in raw-form , I update the data using the array format. Is there a way to do it in form-data ? The purpose of using form-data , I want to upload a new image because I can update the path of productImage
, but I cannot upload a new image public folder. How can I handle it?
Example of updating data in raw form
[ {"propName": "name"}, {"value": "test"}]
router.patch
router.patch('/:productId', checkAuth, (req, res, next) => {
const id = req.params.productId;
const updateOps = {};
for (const ops of req.body) {
updateOps[ops.propName] = ops.value;
}
Product.updateMany({_id: id}, {$set: updateOps})
.exec()
.then(result => {
res.status(200).json({
message: 'Product Updated',
request: {
type: 'GET',
url: 'http://localhost:3000/products/' + id
}
});
})
.catch(err => {
console.log(err);
res.status(500).json({
err: err
});
});
});
Using for...of is a great idea, but you can't use it like you are to loop through an object's properties. Thankfully, Javascript has a few new functions that turn 'an object's properties' into an iterable.
Using Object.keys:
const input = {
firstName: 'Evert',
}
for (const key of Object.keys(input)) {
console.log(key, input[key]);
}
You can also use Object.entries to key both the keys and values:
const input = {
firstName: 'Evert',
}
for (const [key, value] of Object.entries(input)) {
console.log(key, value);
}
I know this answer might be too late to help you but it might help someone in 2020 and beyond.
First, comment out this block:
//const updateOps = {};
//for (const ops of req.body) {
//updateOps[ops.propName] = ops.value;
//}
and change this line:
Product.updateMany({_id: id}, {$set: updateOps})
to this:
Product.updateMany({_id: id}, {$set: req.body})
Everything else is fine. I was having similar issues, but this link helped me: [ What is the difference between ( for... in ) and ( for... of ) statements in JavaScript?
To handle multi-part form data, the bodyParser.urlencoded()
or app.use(bodyParser.json());
body parser will not work.
See the suggested modules here for parsing multipart bodies.
You would be required to use multer
in that case
var bodyParser = require('body-parser');
var multer = require('multer');
var upload = multer();
// for parsing application/json
app.use(bodyParser.json());
// for parsing application/xwww-
app.use(bodyParser.urlencoded({ extended: true }));
//form-urlencoded
// for parsing multipart/form-data
app.use(upload.array());
app.use(express.static('public'));
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