saas-platform/frontend/saas-web/app/view/purchase/order/FormPanel.js

Ext.define('saas.view.purchase.order.FormPanel', {
    extend: 'saas.view.core.form.FormPanel',
    xtype: 'purchase-order-formpanel',

    controller: 'purchase-order-formcontroller',
    viewModel: 'purchase-order-formmodel',

    configUrl: 'resources/json/formItems.json',

});