Model save() method not dealing with mappings

[Tegola]

Hello,
I'm working with a model that use a mapping, and I'm seeing a different behavior with GET and POST, with POST not getting all data.

Here's the simplified version of my model:

Ext.define('MyMessage', {
    extend: 'Ext.data.Model',
    config: {
        fields: [
            { name: 'id', type: 'int' },
            { name: 'title', type: 'string' },
            { name: 'body', type: 'string' },
        ],
        associations: [
            { type: 'belongsTo', model: 'MyUser', foreignKey: 'author.id' },
        ]
    }
});

When calling MyMessage.load(<id>), the "author.id" field works fine.
But then if I call:

var newMsg = Ext.create('MyMessage', {
    title: 'MyTitle',
    body: 'MyBody'
});


newMsg.save();

The record is saved, the local client data is updated except for the "author.id" association, which is undefined. Even tough the data returned from the server has the "author" object inside.

Is that normal?

[coolfish]

I don't see in your code where you tell newMessage who the author of the message is?

[Tegola]

You're right, that's because I'm logged in and the server knows who is the author. Rest assured, the author object is there:

{
	"message": {
		"id": "125",
		"title": "MyTitle",
		"body": "MyBody",
		"author": {
			"id": "2",
			"name": "User name",
			"email": "user@email.com"
		}
	}
}

[Tegola]

Also, the latest reader data (newMsg.getProxy().getReader().metaData) contains the right data.

I'm stuck :|

[Tegola]

I've studied the entire Ext.data section and I couldn't find a solution.
Do somebody have any clue?