How to use combobox Ext5 with data bindings

Question

I want to use a combobox that gets a preselected value from a data binding, as well as possible options for binding data to the same storage. The configuration of the panel items is as follows:

{
    xtype: 'combobox',
    name: 'language_default',
    fieldLabel: 'Default Language',
    multiSelect: false,
    displayField: 'title',
    valueField: 'language_id',
    queryMode: 'local',
    bind: {
        value: '{database.language_default}',
        store: '{database.languages}'
    }
}

If I use this configuration, the dropdown repository is invalid and invalid.

Is it possible to bind the selected option and also the available combobox options ?

Answer 1

ExtJs 5.0.1,

{
    xtype: 'combobox',
    name: 'language_default',
    fieldLabel: 'Default Language',
    multiSelect: false,
    displayField: 'title',
    valueField: 'language_id',
    queryMode: 'local',
    bind: {
        value: '{database.language_id}',
        selection: '{database.language_default}',
        store: '{database.languages}'
    }
}