I have two objects like that:
var obj3 = {
customer_id: 1,
products: { id: 1, name: "Car" },
};
var obj4 = {
customer_id: 1,
products: { id: 2, name: "Dress" },
};
and the expected object is:
result = {
customer_id: 1,
products: [
{ id: 1, name: "Car" },
{ id: 2, name: "Dress" },
],
};
How can i write function customizer(){} in this situation?
Thanks so much for your help, and i'll be welcome for other solution with different way.
Merge the objects to a new object (the {}). Set the default values of the merged values to empty arrays. If the key is products concat them. If not return undefined, so the standard logic of _.merge() would be used:
const obj3 = { customer_id: 1, products: { id: 1, name: "Car" }, };
const obj4 = { customer_id: 1, products: { id: 2, name: "Dress" }, };
const result = _.mergeWith({}, obj3, obj4, (v1 = [], v2 = [], key) =>
key === 'products' ? v1.concat(v2) : undefined
)
console.log(result)<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js" integrity="sha512-WFN04846sdKMIP5LKNphMaWzU7YpMyCU245etK3g/2ARYbPK9Ub18eG+ljU96qKRCWh+quCY7yefSmlkQw1ANQ==" crossorigin="anonymous" referrerpolicy="no-referrer"></script>