Can't get 'hasMany' data from nest JSON - json

Question

I have a nested JSON and I cannot seem to extract the nested array. I am not sure if I set up my store and models correctly. It seems right. As you can see at the bottom of this post, when I try to get the nested part out, it doesn't work.
JSON data:
{
"data":{
"name":"John",
"age":"23",
"gender":"Male",
"purchase":[
{
"item":"shirt",
"qty":1,
"price":10
},
{
"item":"hat",
"qty":2,
"price":25
},
{
"item":"pants",
"qty":1,
"price":15
}
]
},
"success":true,
"errorMsg":""
}
Store:
Ext.define('Pvm.store.MyStore', {
extend: 'Pvm.store.PvmBaseStore',
requires: [
'Pvm.model.Customer'
],
model: 'Pvm.model.Customer',
autoLoad: false
});
Customer Model:
Ext.define('Pvm.model.Customer', {
extend: 'Ext.data.Model',
requires: [
'Ext.data.Field',
'Ext.data.proxy.Ajax',
'Ext.data.reader.Json'
],
fields: [{
name: 'name',
type: 'auto'
}, {
name: 'age',
type: 'auto'
}, {
name: 'gender',
type: 'auto'
}],
associations: {
type: 'hasMany',
model: 'Pvm.model.Purchase',
name: 'purchase',
associationKey: 'purchase'
},
proxy: {
type: 'ajax',
actionMethods: {
create: 'POST',
read: 'POST', // changed read's method to POST (from GET) so we get the parameters as form data (not in URL, for security reasons)
update: 'POST',
destroy: 'POST'
},
url: '/pvmsvr/uiapi?cmd=readXml',
reader: {
type: 'json',
rootProperty: 'data'
}
}
});
Purchase Model:
Ext.define('Pvm.model.Purchase', {
extend: 'Ext.data.Model',
requires: [
'Ext.data.Field',
'Ext.data.proxy.Ajax',
'Ext.data.reader.Json'
],
fields: [{
name: 'item',
type: 'auto'
}, {
name: 'qty',
type: 'auto'
}, {
name: 'price',
type: 'auto'
}],
associations: {
type: 'belongsTo',
model: 'Pvm.model.Customer'
}
});
Controller Code:
onStoreLoaded: function(store, records, successful, eOpts) {
console.log(store); // works
console.log(records); // works
console.log(records[0].get('name')); // works
console.log(records[0].purchase(); // doesn't work; returns 'undefined'
}

Answer 1

I am idiot. I needed the child model's class name in the parent's requires...