How to push array into json object in Firebase set() function?

Question

I want to push new item to my firebase database.

Json object should look like this:

var newItem = {
            'address': "Кабанбай батыр, 53",
            'cityId': 1,
            'courierName': "Максат",
            'dispatcherId': "somedispatcherId",
            'info': "привезти к 2ому подъезу в 11 ч вечера", 
            'isCompleted': 0,
            'isProceeded': 0, 
            'name': "Адиль Жалелов" ,
            'paymentMethod': "наличка" ,
            'phone': "87775634456" ,
            'price': 5000,
            'products': []
        }

And the problem is that i cant push array of objects($scope.orders) to newItem

i tried to push this $scope.orders:

   $scope.addOrder = function(){
        var orderRef = 
        firebase.database().ref().child('Orders').child('Astana');
        var newOrderKey = orderRef.push().key;
        var newJson = {
            'address': "Кабанбай батыр, 53",
            'cityId': 1,
            'courierName': "Максат",
            'dispatcherId': "somedispatcherId",
            'info': "привезти к 2ому подъезу в 11 ч вечера", 
            'isCompleted': 0,
            'isProceeded': 0, 
            'name': "Адиль Жалелов" ,
            'paymentMethod': "наличка" ,
            'phone': "87775634456" ,
            'price': 5000,
            'products': []
        };
         newJson['products'].push( $scope.orders);
        /*for (var i =0; i < $scope.orders.length ; i++){
            newJson['products'].push( $scope.orders[0]);
        } */

        console.log($scope.orders,newJson)
        orderRef.child(newOrderKey).set(newJson); 
    }

But i got error : Reference.set failed: First argument contains an invalid key ($$hashKey) in property....

if console.log($scope.orders) then get

Anyone who can help?

thanks in advance!

The error you have isn't about the push method. It is about the set. Can you add the code where you have the orderRef and newOrderKey please ? It looks like newOrderKey is invalid — Gabriel Diez
– Gabriel Diez, Commented Aug 16, 2017 at 18:55
@GabrielDiez check out) I think everything is ok with orderRef and OrderKey, because when i set json object witout products property it works fine — Aralbay Issatayev
– Aralbay Issatayev, Commented Aug 16, 2017 at 19:00

Gabriel Diez · Accepted Answer · 2017-08-16 21:05:47Z

3

In Firebase, Push method generates a new child location using a unique key and returns its Reference. So you already have the child and the reference of your child. You don't need to add a child to your orderRef like you tried.

You can simply do that

var newOrderKey = orderRef.push();  // Return the ref of the futur child
newOrderKey.set(newJson);

Also there is an issue with object from angular, the '$' in '$$hashKey' is the issue. Angular creates the $$hashKey properties.

This should fix the issue

newJson['products'].push( angular.fromJson(angular.toJson($scope.orders)));

edited Aug 16, 2017 at 21:05

answered Aug 16, 2017 at 19:15

Gabriel Diez

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3 Comments

Aralbay Issatayev Over a year ago

thanks for answering, but it also gives an error: Reference.set failed: First argument contains an invalid key ($$hashKey) in property....

Gabriel Diez Over a year ago

try this newJson['products'].push( angular.fromJson(angular.toJson($scope.orders))); When you are trying to push order from the scope

Aralbay Issatayev Over a year ago

Oh thanks man! angular.fromJson(angular.toJson($scope.orders)) did the trick

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