CRUD operations using Ember-Model - ember.js

Question

Here,I am trying to implement CRUD operations using ember-model.
I am totally new to ember environment,actually i don't have much understanding of ember-model.
Here,i am trying to add new product and delete existing one.I am using inner node of fixture
i.e. cart_items.My this fixture contains two node i.e. logged_in and cart_items and this what my fixture structure :
Astcart.Application.adapter = Ember.FixtureAdapter.create();
Astcart.Application.FIXTURES = [
{
"logged_in": {
"logged": true,
"username": "sachin",
"account_id": "4214"
},
"cart_items": [
{
"id": "1",
"name": "Samsung Galaxy Tab 2",
"qty": "1",
"price": "100",
"subtotal": "100"
},
{
"id": "2",
"name": "Samsung Galaxy Tab 2",
"qty": "1",
"price": "100",
"subtotal": "100"
},
{
"id": "3",
"name": "Samsung Galaxy Tab 2",
"qty": "1",
"price": "100",
"subtotal": "100"
}
]
}
];
I want to this fixture struture only to get data in one service call from server.
Now,here is my code which i am using to add and delete product from cart_items
Astcart.IndexRoute = Ember.Route.extend({
model: function() {
return Astcart.Application.find();
}
});
Astcart.IndexController = Ember.ArrayController.extend({
save: function(){
this.get('model').map(function(application) {
var new_cart_item = application.get('cart_items').create({name: this.get('newProductDesc'),qty: this.get('newProductQty'),price: this.get('newProductPrice'),subtotal: this.get('newProductSubtotal')});
new_cart_item.save();
});
},
deleteproduct: function(product){
if (window.confirm("Are you sure you want to delete this record?")) {
this.get('model').map(function(application) {
application.get('cart_items').deleteRecord(product);
});
}
}
});
But when i am trying to save product i am getting an exception
Uncaught TypeError: Object [object global] has no method 'get'
And when i am trying to delete product i am getting an exception
Uncaught TypeError: Object [object Object] has no method 'deleteRecord'
Here,i also want to implement one functionality i.e. on every save i need to check if that product is already present or not.
If product is not present then only save new product other wise update existing product.
But i don't have any idea how to do this?
I have posted my complete code here.
Can anyone help me to make this jsfiddle work?
Update
I have updated my code here with debugs.
Here, i am not getting any exception but record is also not getting delete.
I am not getting what is happening here?
Can anyone help me to make this jsfiddle work?

Answer 1

'this' context changes within your save method. You need to use the 'this' of the controller and not the map functions. Try this:
save: function(){
var self = this;
self.get('model').map(function(application) {
var new_cart_item = application.get('cart_items').create({
name: self.get('newProductDesc'),
qty: self.get('newProductQty'),
price: self.get('newProductPrice'),
subtotal: self.get('newProductSubtotal')
});
new_cart_item.save();
});
}