Added error handling,

Fix bug with multiple requests being issued

Author: mcintyre321

Mvc.JQuery.Datatables.Example/Controllers/HomeController.cs

@@ -3,9 +3,11 @@
 using System.ComponentModel;
 using System.Globalization;
 using System.Linq;
+using System.Reflection;
 using System.Web;
 using System.Web.Mvc;
 using Mvc.JQuery.Datatables.Models;
+using Newtonsoft.Json.Linq;
 using Resources;
 
 namespace Mvc.JQuery.Datatables.Example.Controllers
@@ -24,6 +26,7 @@ public ActionResult JSUnitTests()
 
         public DataTablesResult<UserView> GetUsers(DataTablesParam dataTableParam)
         {
+            throw new Exception();
             return DataTablesResult.Create(FakeDatabase.Users.Select(user => new UserView()
             {
                 Id = user.Id,
@@ -80,10 +83,20 @@ public class UserView
         public string Position { get; set; }
 
         [DataTablesFilter(DataTablesFilterType.DateTimeRange)]
+        [DefaultToStartOfYear]
         public DateTime?  Hired { get; set; }
 
         public Numbers Number { get; set; }
 
 
     }
+
+    public class DefaultToStartOfYearAttribute : DataTablesAttributeBase
+    {
+        public override void ApplyTo(ColDef colDef, PropertyInfo pi)
+        {
+            colDef.SearchCols = colDef.SearchCols ?? new JObject();
+            colDef.SearchCols["sSearch"] = new DateTime(DateTime.Now.Year, 1, 1).ToString("g") + "~" + DateTimeOffset.Now.Date.AddDays(1).ToString("g");
+        }
+    }
 }

Mvc.JQuery.Datatables.Templates/Content/jquery-datatables-column-filter

@@ -63,7 +63,12 @@
             {
                 options["oTableTools"] = new JRaw("{ 'sSwfPath': '//cdn.datatables.net/tabletools/2.2.1/swf/copy_csv_xls_pdf.swf' }");
             }
-            options["fnServerData"] = new JRaw(" function(sSource, aoData, fnCallback) { $.ajax({ 'dataType': 'json', 'type': 'POST', 'url': sSource, 'data': aoData, 'success': fnCallback })}");
+            options["fnServerData"] = new JRaw(
+                "function(sSource, aoData, fnCallback) { " + 
+                "    var ajaxOptions = { 'dataType': 'json', 'type': 'POST', 'url': sSource, 'data': aoData, 'success': fnCallback }; " +
+                (Model.AjaxErrorHandler == null ? "" : ("ajaxOptions['error'] = " + Model.AjaxErrorHandler) + "; ") +
+                "    $.ajax(ajaxOptions);" +
+                "}");
             options["aoColumnDefs"] = new JRaw(Model.ColumnDefsString);
             options["aoSearchCols"] = Model.SearchCols;
             if (Model.JsOptions.Any())

Mvc.JQuery.Datatables.Templates/Views/Shared/DataTable.cshtml

@@ -32,6 +32,12 @@ public DataTableConfigVm(string id, string ajaxUrl, IEnumerable<ColDef> columns)
             this.ShowPageSizes = true;
             this.TableTools = true;
             ColumnFilterVm = new ColumnFilterSettingsVm(this);
+            AjaxErrorHandler = 
+                "function(jqXHR, textStatus, errorThrown)" + 
+                "{ " + 
+                    "window.alert('error loading data: ' + textStatus + ' - ' + errorThrown); " + 
+                    "console.log(arguments);" + 
+                "}";
         }
 
         public bool ShowSearch { get; set; }
@@ -110,6 +116,7 @@ public string ColumnSortingString
         private bool _columnFilter;
 
         public bool FixedLayout { get; set; }
+        public string AjaxErrorHandler { get; set; }
 
         public class _FilterOn<TTarget>
         {