Angular 5 - Dynamically add items to an array - arrays

Question

I have these two functions:
cart() which is an array object (this information is static)
cartItems which is an array object (this information is dynamic)
Inside the cart there can be several cartItems. How do I push different items into this cart so my final result would look like this:
JSON:
"cart": [
{
"id": "1",
"cartItem": [
{
"id": "cart Item 1",
"action": "New",
"quantity": 1,
},
{
"id": "cart Item 2",
"action": "New",
"quantity": 1,
}
}
]
FUNCTIONS:
private cart(): CaCartItemsModel{
return new CaCartItemsModel(
"1",
"Cambio",
"TV"
);
private cartItems(): CaCartItemModel{
return new CaCartItemModel(
"cart Item 1/cart Item 2",
"New",
1
);
}

Answer 1

I managed to resolve what I needed in the following way:
private createCartItems(cancellationModel: CancellationModel) {
this.request.caAcProductOrderModel.caCartItems.getAllCartItems()
.push(this.setCartItems());
cancellationModel.channels.forEach(channel => {
this.request.caAcProductOrderModel.caCartItems.getAllCartItems()
.forEach(caCartItem => {
caCartItem.caCartItem.getAllCartItem()
.push(this.setCaCartItemModel(
channel.id,
channel.action,
channel.name,
"",
true
));
caCartItem.caCartItem.getAllCartItem()
.forEach(cartItem => {
cartItem.caProduct.caProductRelationship.getAllCaProductRelationship()
.push(this.setCaProductRelationshipModel(channel.type));
cartItem.caProductOffering.caCategory.getAllCategories()
.push(this.setCaCategoryModel("promo"));
cartItem.caProductOffering.caAttributes.getAllAttributes()
.push(this.setCaAttributesModel("Numero fijo Asociado", this.activeCustomerServiceProvider.getPhoneNumber()));
cartItem.cartItemRelationship.getAllCartItemRelationship()
.push(this.setCaCartItemRelationshipModel(channel.id, "reliesOn"));
});
});
});
}