AJAX / EXT.CONNECTION

Koala Framework uses the ExtJS Connection class for all ajax request. Read that documentation for the basics.

Koala Framework adds a few request options on top of that:

• mask: shows mask while the request is running. true to mask the whole body; element to mask this element
• maskText: text shown in the mask, default is 'Loading...'
• progress: show a progress bar for this request
• progressTitle: title of the progress bar, default is 'Progress'
• ignoreErrors: don't do any error handling for this request, failure callback will still be called

Error Handling

When a request fails a error message will be displayed, in debug mode this will also contain debug information and give the user the possibility to resend the request.

Progress Bar

For more time consuming actions you can show a progress bar that will automatically update from the server side.

Ext.Ajax.request({
    timeout: 10*60*1000, //10min
    url: '/example/json-foo',
    progress: true
});

And in the Php Action:

public function jsonFooAction()
{
    $progressBar = new Zend_ProgressBar(
        new Kwf_Util_ProgressBar_Adapter_Cache($this->_getParam('progressNum')),
            0,  //min
            10  //max
    );
    for($i=0; $i<10; $i++) {
        $progressBar->next(1, trl('doing nothing...'));
        sleep(1);
    }
}