Extjs 4 downloading a file through ajax call

Question

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

Answer 1

After reading on various sources from Ext JS forum and here in stackoverflow, below is the approach I've chosen (using Ext JS version 4.2.1):

downloadFile: function(config){
    config = config || {};
    var url = config.url,
        method = config.method || 'POST',// Either GET or POST. Default is POST.
        params = config.params || {};

    // Create form panel. It contains a basic form that we need for the file download.
    var form = Ext.create('Ext.form.Panel', {
        standardSubmit: true,
        url: url,
        method: method
    });

    // Call the submit to begin the file download.
    form.submit({
        target: '_blank', // Avoids leaving the page. 
        params: params
    });

    // Clean-up the form after 100 milliseconds.
    // Once the submit is called, the browser does not care anymore with the form object.
    Ext.defer(function(){
        form.close();
    }, 100);

}