extjs grid store abort

extj

Ext.define('Ext.enhance.data.Store', {
    override: 'Ext.data.Store',
    constructor: function(config) {
        var me = this;
        me.callParent([config]);
        me.on({
            'beforeload': function(store, operation) {
                // keep the operation which has request object
                store.lastOperation = operation;
            }
        });
    },
    abort: function() {
        var me = this;
        if (me.loading && me.lastOperation) {
            var requests = Ext.Ajax.requests;
            for (id in requests) {
                if (requests.hasOwnProperty(id) && requests[id].options == me.lastOperation.request) {
                    Ext.Ajax.abort(requests[id]);
                    delete requests[id];
                    break;
                }
            }
        }
    }
 
});

grid.store.abort();