The problem is very simple: i have to download a file when i submit a form, it\'s an ajax call when the form is submitted which lets me build a file with the data taken from
After extracting/reading many posts, I managed to get this simple method to work..
Ext.create('Ext.form.Panel', { renderTo: Ext.getBody(), standardSubmit: true, url: 'URL' }).submit({params: {'PARAM1': param1, 'PARAM2': param2}});