Question

Not sure how to extract the array in JSON from controller. I have a JSON Object that contains an order with an array of products. The JSON is nested like this but for brevity I reduced the many fields I have.

{ "customerId": "23",   "customerName": "Johnson",
    "products":[
    {
        "productId": "1",
        "finalPrice": "1.00"
    },
    {
        "productId": "2",
        "finalPrice": "2.00"
    },
    {
        "productId": "3",
        "finalPrice": "3.00"
    }
]}

I then have a Controller code that needs to take this and parse it and save it into two tables… Orders and OrdersProducts. This is what I have so far but its not right some how have to take input and for loop each item and save.

class OrdersController {
    def save = {
        def input = request.JSON

        def order = new Orders(input)
        order.save(flush:true)

        // Somehow I have to loop this for each item in array???
        def products = new OrdersProducts(input)
        products.ordersId = order.id

        products.save(flush:true)
        // ???????
    }   

}

———- MY SOLUTION ———-

After taking answer from below and modifying it to suit my particular needs,(legacy database structure), this is what I did to manually insert each product:

OrdersController.groovy

import grails.converters.JSON
import grails.converters.XML

class OrdersController {
    def save = {
        def i
        def input = request.JSON

        def order = new Orders(input)
        if (order.save(failOnError:true)) {
            for (def products: input.ordersProducts) {
                def prod = new OrdersProducts(products)
                prod.ordersId = order.id

                if (prod.save(failOnError:true)) {
                //      
                } else {
                    prod.errors.allErrors.each { println it }
                }
            }
        } else {
            order.errors.each { println it }
        }
    }   
}

Answer 1

Are ‘Orders’ and ‘OrdersProducts’ related? I’m guessing they are related as,

static hasMany = [ordersProducts: OrderProducts]

In this case, you can parse the string to JSON and then initialize the objects,

...
def j = grails.converters.JSON.parse(input)

def order = new Orders(j)
...

order.ordersProducts = j.products