Is Sencha ExtJS association POST wrong? - extjs

Question

So, I have a problem using Sencha ExtJs 4.1 Associations.
I have something like:
Models
Ext.define('Tpl.model.User', {
extend: 'Ext.data.Model',
requires: ['Tpl.model.PostTemplate'],
fields: [
{ name: 'id', type: 'int' },
{ name: 'name', type: 'string' },
{ name: 'postTemplate', type: 'int' }
],
associations: [
{ type: 'belongsTo', name: 'postTemplate', model:'Tpl.model.PostTemplate', associationKey: 'postTemplate', primaryKey: 'id', foreignKey: 'postTemplate' }
]
});
and
Ext.define('Tpl.model.PostTemplate', {
extend: 'Ext.data.Model',
fields: [
{ name: 'id', type: 'int' },
{ name: 'blah', type: 'string' }
],
associations: [
{ type: 'hasMany', model: 'Tpl.model.User' }
]
});
Stores
Ext.define('Tpl.store.Users', {
extend: 'Ext.data.Store',
model: 'Tpl.model.User',
autoLoad: true,
proxy: {
type: 'rest',
url: '../users',
reader: {
type: 'json',
root: ''
},
writer: {
type: 'json'
}
}
});
Ext.define('Tpl.store.PostTemplate', {
extend: 'Ext.data.Store',
model: 'Tpl.model.PostTemplate',
autoLoad: true,
proxy: {
type: 'rest',
//appendId: true,
url: '../postTemplates/',
reader: {
type: 'json',
root: ''
},
writer: {
type: 'json'
}
}
});
The problem is that I'm getting a POST like this:
{
"postTemplate": 1,
"id": 0,
"name": "foo"
}
But I need a POST like this:
{
"postTemplate": {
"id": 1,
"blah": "foo"
},
"id": 0,
"name": "bar"
}
Also, the assessor function like "setPostTemplate" doesn't exist and I think it should be created automatically.
Already tried to something like " record.data.postTemplate = (...) " but I got an infinite loop throwing an execption...
Can someone please advise? Also, if you need something else that could be useful for the answer let me know.
Thanks!

Answer 1

Out of the box the Associated objects are not serialized back to the server as you expect them . This issue has been brought up many times. The best thing might be to follow this thread:
http://www.sencha.com/forum/showthread.php?141957-Saving-objects-that-are-linked-hasMany-relation-with-a-single-Store
This thread talks about overriding getRecordData in the JSON writer class.