How to load store via POST request - extjs

Question

I need to load store via cross domain POST request
Ext.define('MyDesktop.desktop.store.DesktopShortcutStore', {
extend: 'Ext.data.Store',
requires: [
'MyDesktop.desktop.model.DesktopShortcutModel'
],
constructor: function(cfg) {
var me = this;
cfg = cfg || {};
me.callParent([Ext.apply({
storeId: 'DesktopShortcutStore',
model: 'MyDesktop.desktop.model.DesktopShortcutModel',
autoLoad: false,
proxy: {
type: 'ajax',
url: getApiUrl() + 'account/desktop-shortcuts-list',
cors: true,
reader: {
type: 'json',
rootProperty: 'items',
successProperty: 'success'
},
paramsAsJson: true,
actionMethods: {
read: 'POST'
},
extraParams: {
fff: 'zzz'
}
}
}, cfg)]);
}
});
But I have OPTIONS request with no "fff" param.
Cross domain via jQuery is working correctly.
Using
Ext.Ajax.useDefaultXhrHeader = false;
Ext.Ajax.cors = true;
Is not helps.
I cannot find any information in docs.

Answer 1

This should be the easiest solution. Loading a store directly via a proxy and POST might require a few overrides, not sure it's worth the effort (needs more investigation).
var store = ...;
Ext.Ajax.request({
method: 'POST',
url: '...',
withCredentials: true, // for identity cookies
success: function(response) {
// given json array is returned
var data = Ext.decode(response.responseText);
Ext.each(data, function(r) {
store.add(r);
});
}
});