How to make synchronous AJAX request using Ext library?

[mxu]

the codes I used for synchronous call is just set async: false, but it stopped working as it used to.
at async: false for Ext.Ajax.request ({...}), asynchronous call is undertaken. how should
I get synchronous call back ?

thanks

mxu

//////////////////////////////////////////////////////////
Ext.Ajax.request ({
//Ext.lib.Ajax.request({
url: url2use,
params: {},
method: 'GET',
async: false,
scope: this,
success: function (result, request) {
var jsonData = Ext.util.JSON.decode(result.responseText);
...
},
failure: function ( result, request) {
Ext.ux.GaPMegBox.show('Ajax Request Error', 'Failed to get information on SNP<br/>and use default setting instead' , 5);
},
callback: function( result, request ){

}
});
////////////////////////////////////////////////////////////////

[RakeshAdvani]

Hi

[hendricd]

the codes I used for synchronous call is just set async: false, but it stopped working as it used to.
at async: false for Ext.Ajax.request ({...}), asynchronous call is undertaken. how should
I get synchronous call back ?

thanks

mxu

//////////////////////////////////////////////////////////
Ext.Ajax.request ({
//Ext.lib.Ajax.request({
url: url2use,
params: {},
method: 'GET',
async: false,
scope: this,
success: function (result, request) {
var jsonData = Ext.util.JSON.decode(result.responseText);
...
},
failure: function ( result, request) {
Ext.ux.GaPMegBox.show('Ajax Request Error', 'Failed to get information on SNP<br/>and use default setting instead' , 5);
},
callback: function( result, request ){

}
});
////////////////////////////////////////////////////////////////

@mxu -- basex preserves the callback functionality, so include your handling in the success/failure callbacks as you normally would.

The request is still made synchronously.

[mcouillard]

Just as a thought, how have people got round using a synchronous request when using a window unload or beforeunload event? Useful for saving state for a page, for example. With an asynchronous call the callback function gets destroyed before it can be executed. In effect, you never know if the async. call has been successful.

Max

I had the same challenge. It's ideal for my app to only save state to the server on page unload. So I use the 'onbeforeunload' window event and a standard XMLHTTP wrapper to make a synchronous POST to the server with the state. It works fine, but only Firefox shows a nice Ext mask loading message before the POST. IE prevents such actions during this event, I guess.

[huskerguy]

most Ajax objects have an async flag true or false. Most people don't know this and at times can solve brower issures.

[srinivasan.mohan]

Test.