How to declare array in post method with validation

Question

How to declare array in post method with validation

In my project, I want to validate the missing fields during post method. Fields in my table look like:

{
  name: string, required: true
  products: [
    {
      name: string, required: true
      quantity: number, required: true
      rate: number
    }
  ]

Now I declare validation for the name field as follows:

req.checkBody('name','Missing params').notEmpty();

It works properly, but the array is not working and the code is:

req.checkBody(products: 'name','Missing params').notEmpty();         
req.checkBody(products: 'quantity','Missing params').notEmpty();

node.js
express

Answer 1

When you want to validate an array in a nested object, you have to pass an array. Instead of doing this:

req.checkBody(products: 'name','Missing params').notEmpty();
req.checkBody(products: 'name','Missing params').notEmpty();

, you should do this:

req.checkBody(['products', 0, 'name'],'Missing params').notEmpty();
req.checkBody(['products', 0, 'quantity'],'Must be an integer').isInt();

, and so on.