我用 $acolumns 和 $bcolumns 修改了服务器端处理脚本。这是因为我对 SQL 查询使用了“LEFT OUTER JOIN”，并使用“To and from date filter”来过滤表的列之一。为此，我修改了 $sWhere 和 $sQuery。这一切都很好，但我无法用字段中的值填充表中的过滤器。
对此的任何帮助/指导将不胜感激。
Javascript：
var $oTable;
var asInitVals = new Array();
var aSelected = [];
$(document).ready(function() {
var $oTable= $("#example").dataTable( {
"oLanguage": {
"sSearch": "Search:"
},
"sDom":"lfrtip", // default is lfrtip, where the f is the filter
"bProcessing": true,
"bServerSide": true,
"bFilter": true,
"bSearchable": true,
"sAjaxSource": "scripts/server_processing.php",
"aoColumns": [
{ "sName": "catname", "sTitle": "Division"} ,
{ "sName": "cname", "sTitle": "Course"} ,
{ "sName": "status", "sTitle": "Code"} ,
{ "sName": "mname","sTitle": "Module"} ,
{ "sName": "searchdateadded", "sTitle": "Created"},
],
"fnRowCallback": function( nRow, aData, iDisplayIndex ) {
if ( jQuery.inArray(aData.DT_RowId, aSelected) !== -1 ) {
$(nRow).addClass('row_selected');
}
},
//"sDom": '<"clear"fl>t<"clear"><"bottom"ip><"clear">',
"iDisplayLength": 20,
"bJQueryUI": true,
"sPaginationType": "full_numbers",
"fnServerParams": function (aoData, fnCallback) {
aoData.push( { "name": "min", "value": $('#min').val() } );
aoData.push( { "name": "max", "value": $('#max').val() } );
}
}).columnFilter({aoColumns:[
{ type:"select"},
{ type:"select"},
{ type:"select"},
{ type:"select"},
{ type:"select"}
]}
);
// Implements the jQuery UI Datepicker widget on the date controls
$('#min, #max').daterangepicker({
dateFormat: 'yymmdd',
onClose: function(event) {
$oTable.fnDraw();
}
//showOn: 'button',
//buttonImage: '../images/calendar.jpg',
//buttonImageOnly: true
}).change(function() {
$oTable.fnDraw();
});
//Button to clear the filter
$('#clear').click(function(){
$('#min').val('') ;
$('#max').val('') ;
$oTable.fnDraw('');
});
/* Add event listeners to the two range filtering inputs */
$('#min').keyup( function() { $oTable.fnDraw(); });
$('#min').change( function() { $oTable.fnDraw(); });
/* Add event listeners to the two range filtering inputs */
$('#max').keyup( function() { $oTable.fnDraw(); });
$('#max').change( function() { $oTable.fnDraw(); });
$('input[type=text]').addClass("idleField");
$('input[type=text]').focus(function() {
$(this).removeClass("idleField").addClass("focusField");
if (this.value == this.defaultValue){
}
if(this.value != this.defaultValue){
this.select();
}
});
$('input[type=text]').focusout(function() {
$(this).removeClass("focusField").addClass("idleField");
});
/* Click event handler */
$('#example tbody tr').live('click', function () {
var id = this.id;
var index = jQuery.inArray(id, aSelected);
if ( index === -1 ) {
aSelected.push( id );
} else {
aSelected.splice( index, 1 );
}
$(this).toggleClass('row_selected');
} );
} );
我的Serverside处理如下：
<?php
/*
* Script: DataTables server-side script for PHP and MySQL
* Copyright: 2010 - Allan Jardine
* License: GPL v2 or BSD (3-point)
*/
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* Easy set variables
*/
/* Array of database columns which should be read and sent back to DataTables. Use a space where
* you want to insert a non-database field (for example a counter or static image)
*/
$aColumns = array('catname','cname', 'short', 'mname', 'searchdateadded');
$bColumns = array('cc.name','c.fullname', 'c.shortname', 'm.name', 'cm.added');
/* Indexed column (used for fast and accurate table cardinality) */
$sIndexColumn = "id";
/* DB table to use */
$sTable = "mdl_course_modules";
/* Database connection information */
$gaSql['user'] = "user";
$gaSql['password'] = "password";
$gaSql['db'] = "db";
$gaSql['server'] = "localhost";
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
* If you just want to use the basic configuration for DataTables with PHP server-side, there is
* no need to edit below this line
*/
/*
* MySQL connection
*/
$gaSql['link'] = mysql_pconnect( $gaSql['server'], $gaSql['user'], $gaSql['password'] ) or
die( 'Could not open connection to server' );
mysql_select_db( $gaSql['db'], $gaSql['link'] ) or
die( 'Could not select database '. $gaSql['db'] );
/*
* Paging
*/
$sLimit = "";
if ( isset( $_GET['iDisplayStart'] ) && $_GET['iDisplayLength'] != '-1' )
{
$sLimit = "LIMIT ".mysql_real_escape_string( $_GET['iDisplayStart'] ).", ".
mysql_real_escape_string( $_GET['iDisplayLength'] );
}
/*
* Ordering
*/
if ( isset( $_GET['iSortCol_0'] ) )
{
$sOrder = "ORDER BY ";
for ( $i=0 ; $i<intval( $_GET['iSortingCols'] ) ; $i++ )
{
if ( $_GET[ 'bSortable_'.intval($_GET['iSortCol_'.$i]) ] == "true" )
{
$sOrder .= $aColumns[ intval( $_GET['iSortCol_'.$i] ) ]."
".mysql_real_escape_string( $_GET['sSortDir_'.$i] ) .", ";
}
}
$sOrder = substr_replace( $sOrder, "", -2 );
if ( $sOrder == "ORDER BY" )
{
$sOrder = "";
}
}
/*
* Filtering
* NOTE this does not match the built-in DataTables filtering which does it
* word by word on any field. It's possible to do here, but concerned about efficiency
* on very large tables, and MySQL's regex functionality is very limited
*/
$sWhere = "";
if ( $_GET['sSearch'] != "" )
{
$sWhere = "AND (";
for ( $i=0 ; $i<count($bColumns) ; $i++ )
{
$sWhere .= $bColumns[$i]." LIKE '%".mysql_real_escape_string( $_GET['sSearch'] )."%' OR ";
}
$sWhere = substr_replace( $sWhere, "", -3 );
$sWhere .= ') ';
}
/* Individual column filtering */
for ( $i=0 ; $i<count($bColumns) ; $i++ )
{
if ( $_GET['bSearchable_'.$i] == "true" && $_GET['sSearch_'.$i] != '' )
{
if ( $sWhere == "" )
{
$sWhere = " AND ";
}
else
{
$sWhere .= " AND ";
}
$sWhere .= $bColumns[$i]." LIKE '%".mysql_real_escape_string($_GET['sSearch_'.$i])."%'";
}
}
if(isset($_GET['min']) && isset($_GET['max']) && $_GET['min'] != '' && $_GET['max'] != ''){
$sWhere = "AND FROM_UNIXTIME(cm.added, '%Y%m%d') BETWEEN '$_GET[min]' AND '$_GET[max]'";
}
/*
* SQL queries
* Get data to display
*/
$sQuery = "
SELECT SQL_CALC_FOUND_ROWS ".str_replace(" , ", " ", "c.fullname AS cname, c.shortname AS short, m.name AS mname, cc.name AS catname, FROM_UNIXTIME(cm.added, '%Y - %M %D') AS dateadded,
FROM_UNIXTIME(cm.added, '%d %M - %Y') AS searchdateadded")."
FROM mdl_course_modules cm
LEFT OUTER JOIN mdl_modules m on cm.module=m.id
LEFT OUTER JOIN mdl_course c on cm.course=c.id
LEFT OUTER JOIN mdl_course_categories cc on c.category=cc.id
WHERE c.category != 0 $sWhere
$sOrder
$sLimit
";
$rResult = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
/* Data set length after filtering */
$sQuery = "
SELECT FOUND_ROWS()
";
$rResultFilterTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
$aResultFilterTotal = mysql_fetch_array($rResultFilterTotal);
$iFilteredTotal = $aResultFilterTotal[0];
/* Total data set length */
$sQuery = "
SELECT COUNT(".$sIndexColumn.")
FROM $sTable
";
$rResultTotal = mysql_query( $sQuery, $gaSql['link'] ) or die(mysql_error());
$aResultTotal = mysql_fetch_array($rResultTotal);
$iTotal = $aResultTotal[0];
/*
* Output
*/
$output = array(
"sEcho" => intval($_GET['sEcho']),
"iTotalRecords" => $iTotal,
"iTotalDisplayRecords" => $iFilteredTotal,
"aaData" => array()
);
while ( $aRow = mysql_fetch_array( $rResult ) )
{
$row = array();
for ( $i=0 ; $i<count($aColumns) ; $i++ )
{
if ( $aColumns[$i] == "version" )
{
/* Special output formatting for 'version' column */
$row[] = ($aRow[ $aColumns[$i] ]=="0") ? '-' : $aRow[ $aColumns[$i] ];
}
else if ( $aColumns[$i] != ' ' )
{
/* General output */
$row[] = $aRow[ $aColumns[$i] ];
}
}
$output['aaData'][] = $row;
}
echo json_encode( $output );
?>