AJAX paging updates. This patch fixes issues with update events being re-triggered continuously and AJAX error handling being bound too many times. It also adds support for passing filtering parameters with the AJAX request.

addons/pager/jquery.tablesorter.pager.js

@@ -11,10 +11,12 @@
 			// target the pager markup
 			container: null,
 
-			// use this format: "http://mydatabase.com?page={page}&size={size}&{sortList:col}"
-			// where {page} is replaced by the page number and {size} is replaced by the number of records to show
-			// {sortList:col} adds the sortList to the url into a "col" array.
+			// use this format: "http://mydatabase.com?page={page}&size={size}&{sortList:col}&{filterList:fcol}"
+			// where {page} is replaced by the page number, {size} is replaced by the number of records to show,
+			// {sortList:col} adds the sortList to the url into a "col" array, and {filterList:fcol} adds
+			// the filterList to the url into an "fcol" array.
 			// So a sortList = [[2,0],[3,0]] becomes "&col[2]=0&col[3]=0" in the url
+			// and a filterList = [[2,Blue],[3,13]] becomes "&fcol[2]=Blue&fcol[3]=13" in the url
 			ajaxUrl: null,
 
 			// process ajax so that the following information is returned:
@@ -69,7 +71,8 @@
 			totalRows: 0,
 			totalPages: 0,
 			filteredRows: 0,
-			filteredPages: 0
+			filteredPages: 0,
+			cssErrorRow: 'tablesorter-errorRow'
 
 		};
 
@@ -81,7 +84,6 @@
 			r = 'removeClass',
 			d = c.cssDisabled,
 			dis = !!disable,
-			// tr = Math.min( c.totalRows, c.filteredRows ),
 			tp = Math.min( c.totalPages, c.filteredPages );
 			if ( c.updateArrows ) {
 				$(c.cssFirst + ',' + c.cssPrev, c.container)[ ( dis || c.page === 0 ) ? a : r ](d);
@@ -90,7 +92,7 @@
 		},
 
 		updatePageDisplay = function(table, c) {
-			var i, p, s, t, out, f = $(table).hasClass('hasFilters');
+			var i, p, s, t, out, f = $(table).hasClass('hasFilters') && !c.ajaxUrl;
 			c.filteredRows = (f) ? $(table).find('tbody tr:not(.filtered)').length : c.totalRows;
 			c.filteredPages = (f) ? Math.ceil( c.filteredRows / c.size ) : c.totalPages;
 			if ( Math.min( c.totalPages, c.filteredPages ) > 0 ) {
@@ -187,7 +189,7 @@
 				tc = table.config,
 				$b = $(table.tBodies).filter(':not(.' + tc.cssInfoBlock + ')'),
 				hl = $t.find('thead th').length, tds = '',
-				err = '<tr class="' + tc.selectorRemove + '"><td style="text-align: center;" colspan="' + hl + '">' +
+				err = '<tr class="' + c.cssErrorRow + '"><td style="text-align: center;" colspan="' + hl + '">' +
 					(exception ? exception.message + ' (' + exception.name + ')' : 'No rows found') + '</td></tr>',
 				result = c.ajaxProcessing(data) || [ 0, [] ],
 				d = result[1] || [],
@@ -225,13 +227,17 @@
 						$f.eq(j).html( th[j] );
 					});
 				}
+				
+				$t.find('thead tr.' + c.cssErrorRow).remove(); //Clean up any previous error.
 				if ( exception ) {
 					// add error row to thead instead of tbody, or clicking on the header will result in a parser error
 					$t.find('thead').append(err);
 				} else {
 					$b.html( tds ); // add tbody
 				}
-				$.tablesorter.isProcessing(table); // remove loading icon
+				if (tc.showProcessing) {
+					$.tablesorter.isProcessing(table); // remove loading icon
+				}
 				$t.trigger('update');
 				c.totalRows = result[0] || 0;
 				c.totalPages = Math.ceil( c.totalRows / c.size );
@@ -246,29 +252,53 @@
 		},
 
 		getAjax = function(table, c){
-			var url = (c.ajaxUrl) ? c.ajaxUrl.replace(/\{page\}/g, c.page).replace(/\{size\}/g, c.size) : '',
-			arry = [],
-			sl = table.config.sortList,
-			col = url.match(/\{sortList[\s+]?:[\s+]?(.*)\}/);
-			if (col) {
-				col = col[1];
-				$.each(sl, function(i,v){
-					arry.push(col + '[' + v[0] + ']=' + v[1]);
-				});
-				// if the arry is empty, just add the col parameter... "&{sortList:col}" becomes "&col"
-				url = url.replace(/\{sortList[\s+]?:[\s+]?(.*)\}/g, arry.length ? arry.join('&') : col );
-			}
+			var url = getAjaxUrl(table, c),
+			tc = table.config;
 			if ( url !== '' ) {
-				// loading icon
-				$.tablesorter.isProcessing(table, true);
-				$(document).ajaxError(function(e, xhr, settings, exception) {
-					renderAjax(null, table, c, exception);
+				if (tc.showProcessing) {
+					$.tablesorter.isProcessing(table, true); // show loading icon
+				}
+				$(document).bind('ajaxError.pager', function(e, xhr, settings, exception) {
+					if (settings.url == url) {
+						renderAjax(null, table, c, exception);
+						$(document).unbind('ajaxError.pager');
+					}
 				});
 				$.getJSON(url, function(data) {
 					renderAjax(data, table, c);
+					$(document).unbind('ajaxError.pager');
 				});
 			}
 		},
+		
+		getAjaxUrl = function(table, c) {
+			var url = (c.ajaxUrl) ? c.ajaxUrl.replace(/\{page\}/g, c.page).replace(/\{size\}/g, c.size) : '',
+			sl = table.config.sortList,
+			fl = c.currentFilters || [],
+			sortCol = url.match(/\{sortList[\s+]?:[\s+]?([^}]*)\}/),
+			filterCol = url.match(/\{filterList[\s+]?:[\s+]?([^}]*)\}/),
+			arry = [];
+			if (sortCol) {
+				sortCol = sortCol[1];
+				$.each(sl, function(i,v){
+					arry.push(sortCol + '[' + v[0] + ']=' + v[1]);
+				});
+				// if the arry is empty, just add the col parameter... "&{sortList:col}" becomes "&col"
+				url = url.replace(/\{sortList[\s+]?:[\s+]?([^}]*)\}/g, arry.length ? arry.join('&') : sortCol );
+			}
+			if (filterCol) {
+				filterCol = filterCol[1];
+				$.each(fl, function(i,v){
+					if (v) {
+						arry.push(filterCol + '[' + i + ']=' + encodeURIComponent(v));
+					}
+				});
+				// if the arry is empty, just add the fcol parameter... "&{filterList:fcol}" becomes "&fcol"
+				url = url.replace(/\{filterList[\s+]?:[\s+]?([^}]*)\}/g, arry.length ? arry.join('&') : filterCol );
+			}
+			
+			return url;
+		},
 
 		renderTable = function(table, rows, c) {
 			var i, j, o,
@@ -329,13 +359,13 @@
 			if ( c.page < 0 || c.page > ( p - 1 ) ) {
 				c.page = 0;
 			}
-			// change if page changed - fixes #182
-			if (c.ajax && $.data(table, 'pagerLastPage') !== c.page) {
+			if (c.ajax) {
 				getAjax(table, c);
 			} else if (!c.ajax) {
 				renderTable(table, table.config.rowsCopy, c);
 			}
 			$.data(table, 'pagerLastPage', c.page);
+			$.data(table, 'pagerUpdateTriggered', true);
 			if (c.initialized) { $(table).trigger('pageMoved', c); }
 		},
 
@@ -414,6 +444,7 @@
 				var config = this.config,
 				c = config.pager = $.extend( {}, $.tablesorterPager.defaults, settings ),
 				table = this,
+				tc = table.config,
 				$t = $(table),
 				pager = $(c.container).addClass('tablesorter-pager').show(); // added in case the pager is reinitialized after being destroyed.
 				config.appender = $this.appender;
@@ -423,6 +454,9 @@
 				if ( typeof(c.ajaxUrl) === 'string' ) {
 					// ajax pager; interact with database
 					c.ajax = true;
+					//When filtering with ajax, allow only custom filtering function, disable default filtering since it will be done server side.
+					tc.widgetOptions.filter_serversideFiltering = true;
+					tc.serverSideSorting = true;
 					getAjax(table, c);
 				} else {
 					c.ajax = false;
@@ -430,17 +464,27 @@
 					$(this).trigger("appendCache", true);
 					hideRowsSetup(table, c);
 				}
-
+				
+				$(table)
+					.unbind('filterStart.pager')
+					.bind('filterStart.pager', function(e, filters) {
+						c.currentFilters = filters;
+					});
+					
 				// update pager after filter widget completes
 				$(table)
-					.unbind('filterEnd.pager updateComplete.pager ')
-					.bind('filterEnd.pager updateComplete.pager', function() {
-						if ($(this).hasClass('hasFilters')) {
-							c.page = 0;
-							updatePageDisplay(table, c);
-							moveToPage(table, c);
-							changeHeight(table, c);
+					.unbind('filterEnd.pager sortEnd.pager')
+					.bind('filterEnd.pager sortEnd.pager', function() {
+						//Prevent infinite event loops from occuring by setting this in all moveToPage calls and catching it here.
+						if ($.data(table, 'pagerUpdateTriggered')) {
+							$.data(table, 'pagerUpdateTriggered', false);
+							return;
 						}
+						
+						c.page = 0;
+						updatePageDisplay(table, c);
+						moveToPage(table, c);
+						changeHeight(table, c);
 					});
 
 				if ( $(c.cssGoto, pager).length ) {

js/jquery.tablesorter.js

@@ -40,6 +40,7 @@
 				sortMultiSortKey : 'shiftKey', // key used to select additional columns
 				usNumberFormat   : true,       // false for German "1.234.567,89" or French "1 234 567,89"
 				delayInit        : false,      // if false, the parsed table contents will not update until the first sort
+				serverSideSorting : false,     // if true, server-side sorting should be performed because client-side sorting will be disabled, but the ui and events will still be used.
 
 				// sort options
 				headers          : {},         // set sorter, string, empty, locked order, sortInitialOrder, filter, etc.
@@ -459,6 +460,9 @@
 				var dynamicExp, sortWrapper, col, mx = 0, dir = 0, tc = table.config,
 				sortList = tc.sortList, l = sortList.length, bl = table.tBodies.length,
 				sortTime, i, j, k, c, colMax, cache, lc, s, e, order, orgOrderCol;
+				if (tc.serverSideSorting) {
+					return;
+				}
 				if (tc.debug) { sortTime = new Date(); }
 				for (k = 0; k < bl; k++) {
 					colMax = tc.cache[k].colMax;

js/jquery.tablesorter.widgets.js

@@ -282,6 +282,7 @@ $.tablesorter.addWidget({
   filter_searchDelay   : 300    // typing delay in milliseconds before starting a search
   filter_startsWith    : false  // if true, filter start from the beginning of the cell contents
   filter_useParsedData : false  // filter all data using parsed content
+  filter_serversideFiltering : false // if true, server-side filtering should be performed because client-side filtering will be disabled, but the ui and events will still be used.
  **************************/
 $.tablesorter.addWidget({
 	id: "filter",
@@ -353,7 +354,7 @@ $.tablesorter.addWidget({
 					$tb = $.tablesorter.processTbody(table, $(b[k]), true);
 					$tr = $tb.children('tr');
 					l = $tr.length;
-					if (cv === ''){
+					if (cv === '' || wo.filter_serversideFiltering){
 						$tr.show().removeClass('filtered');
 					} else {
 						// loop through the rows