View Full Version : Logic to Cancel an already made login request on the a Login Screen

13 May 2013, 2:57 PM
Hi ,

I have a basic login screen with a Login and Cancel button.
Currently my Cancel button resets the Username and Password fields, but doesnt cancel the request itself (if it has been made already and not yet completed).

I am looking for some lines of code to cancel/abort/destroy the request.

here is my code.

Ext.define('MasterDataManager.store.Authentication', {
extend: 'Ext.data.Store',

requires: [

constructor: function(cfg) {
var me = this;
cfg = cfg || {};
autoLoad: false,
storeId: 'authentication',
model: 'MasterDataManager.model.Authentication',
proxy: {
type: 'rest',
headers: {
Accept: 'application/json',
'Content-Type': 'application/json'
reader: {
type: 'json',
successProperty: 'success2'
}, cfg)]);

Cancel button controller click event:

var store = Ext.getStore('Authentication');
// TODO : Cancel the request if it has been already made


13 May 2013, 5:08 PM
I haven't had to do this before, but i managed to hunt up a few scraps to point me in the right direction... if you add an 'beforeload' event to your store... maybe something like

function(store, operation) { store.lastOperation = operation;}

Then you can use that to get access to the request object... The request can be fed to Ext.Ajax to cancel that particular request...


If that helps, then remember...

Before jumping on the forums, always do a quick google search, 9 times out of 10 someone has had the same problem before you had it.

I *HAVEN'T* tested this code, nor did i write it... It's an educated guess based on:
http://www.sencha.com/forum/showthread.php?50183-abort-cancel-store.load (Possibly the same problem, but outdated)
http://stackoverflow.com/questions/13251440/selectively-aborting-an-ajax-request-sent-via-extjs-direct-proxy (similar problem, but more recent)

backed up by some double checking:
And don't forget to check docs.sencha too! (it wouldn't have helped this time, but normally browsing the function list for an object answers half my questions)

12 Nov 2013, 6:17 PM
following line was enough and does the job.