ExtJs ViewModel Bind Field doesn't work on array - arrays

Question

I'm trying to bind (two ways bind) some field of my form with data provided by my view model.
When I bind a simple string, it works perfectly. But when I try to bind a form field to an array field inside my viewmodel, modifications are not considered by the view model.
This is my model
Ext.define('Front.model.User', {
extend : 'Ext.data.Model',
fields : [{
name : 'id',
type : 'int'
}, {
name : 'name',
type : 'string'
}, {
name : 'email',
type : 'string'
}, {
name : 'last_connection',
type : 'date',
dateFormat : 'Y-m-d H:i:s'
}, {
name : 'birth',
type : 'date',
dateFormat : 'Y-m-d H:i:s'
}, {
name : 'schedule',
type : 'auto'
}]
});
This is my ViewModel
Ext.define('Front.view.user.SheetModel', {
extend : 'Ext.app.ViewModel',
alias : 'viewmodel.sheet',
requires : ['Front.model.User'],
data : {
currentUser:null
},
model : 'Front.model.User'
});
This is my Form
Ext.define('Front.view.user.Sheet', {
extend : 'Ext.form.Panel',
requires : ['Front.view.user.SheetController'],
controller : 'sheet',
viewModel : {
type : 'sheet'
},
config : {
currentUser : null
}, {
xtype : 'textfield',
fieldLabel : 'De',
name : 'morningstarttest',
width : 60,
bind : {
value : '{currentUser.schedule.lundi.am.start}'
}
}
});
The bind displays the correct value the first time but doesn't update if I change the value.
The 'schedule' field in a model is an array.
Any ideas how I could solve this problem?

Answer 1

How can your code know which item in the array to bind against? You'd need to do something like:
{currentUser.schedule[0].lundi.am.start}
In order to specify an array index. I can't remember offhand if you can do this, and that's because this just feels like a bad idea. I'd suggest rethinking what you're attempting to do. Rather than have schedule as a field on your model, look into associations.