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Plugins/api/fnReloadAjax.js

65 lines
2.1 KiB
JavaScript

/**
* By default DataTables only uses the sAjaxSource variable at initialisation
* time, however it can be useful to re-read an Ajax source and have the table
* update. Typically you would need to use the fnClearTable() and fnAddData()
* functions, however this wraps it all up in a single function call.
* <i>Note</i>:To reload data when using server-side processing, just use the
* built-inAPI function fnDraw rather than this plug-in.
* @name fnReloadAjax
* @anchor fnReloadAjax
* @author <a href="http://sprymedia.co.uk">Allan Jardine</a>
*
* @example
* // Example call to load a new file
* oTable.fnReloadAjax( 'media/examples_support/json_source2.txt' );
*
* // Example call to reload from original file
* oTable.fnReloadAjax();
*/
$.fn.dataTableExt.oApi.fnReloadAjax = function ( oSettings, sNewSource, fnCallback, bStandingRedraw )
{
if ( typeof sNewSource != 'undefined' && sNewSource != null )
{
oSettings.sAjaxSource = sNewSource;
}
this.oApi._fnProcessingDisplay( oSettings, true );
var that = this;
var iStart = oSettings._iDisplayStart;
var aData = [];
this.oApi._fnServerParams( oSettings, aData );
oSettings.fnServerData.call( oSettings.oInstance, oSettings.sAjaxSource, aData, function(json) {
/* Clear the old information from the table */
that.oApi._fnClearTable( oSettings );
/* Got the data - add it to the table */
var aData = (oSettings.sAjaxDataProp !== "") ?
that.oApi._fnGetObjectDataFn( oSettings.sAjaxDataProp )( json ) : json;
for ( var i=0 ; i<aData.length ; i++ )
{
that.oApi._fnAddData( oSettings, aData[i] );
}
oSettings.aiDisplay = oSettings.aiDisplayMaster.slice();
if ( typeof bStandingRedraw != 'undefined' && bStandingRedraw === true )
{
oSettings._iDisplayStart = iStart;
that.fnDraw( false );
}
else
that.fnDraw();
that.oApi._fnProcessingDisplay( oSettings, false );
/* Callback user function - for event handlers etc */
if ( typeof fnCallback == 'function' && fnCallback != null )
{
fnCallback( oSettings );
}
}, oSettings );
};