uas-platform/frontend/uas-web/app/auth/LoginModel.js

Ext.define('uas.auth.LoginModel', {
    extend: 'Ext.app.ViewModel',
    alias: 'viewmodel.login',

    data: {
        locale: null,
        datacenter: null,
        username: null,
        password: null,
        persist: null
    }
});