jsOptions parameter is added to FilterOn. Example updated

Author: abelozerov

Mvc.JQuery.Datatables.Example/Views/Home/Index.cshtml

@@ -48,6 +48,10 @@ can also use
 
 <h1>Voila</h1>
 
+<div style="padding: 5px; border: 1px solid grey">
+    Custom placement for Position filter:
+    <div id="custom-filter-placeholder-position"></div>
+</div>
 
 @using Mvc.JQuery.Datatables
 @using Mvc.JQuery.Datatables.Example.Controllers
@@ -56,7 +60,7 @@ can also use
     //vm.JsOptions.Add("iDisplayLength", 25);
     //vm.JsOptions.Add("aLengthMenu", new object[] { new[] {5, 10, 25, 250, -1} , new object[] { 5, 10, 25, 250, "All"} });
     vm.ColumnFilter = true;
-    vm.FilterOn("Position").Select("Engineer", "Tester", "Manager")
+    vm.FilterOn("Position", new { sSelector = "#custom-filter-placeholder-position" }).Select("Engineer", "Tester", "Manager")
         .FilterOn("Id").NumberRange();
       //.FilterOn("Number").CheckBoxes(Enum.GetNames(typeof(Numbers)));
 }
@@ -69,3 +73,5 @@ can also use
 
 
 
+
+

Mvc.JQuery.Datatables/DataTableVm.cs

@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Web.Routing;
 using System.Web.Script.Serialization;
 
 namespace Mvc.JQuery.Datatables
@@ -54,7 +55,7 @@ public string JsOptionsString
         {
             get
             {
-                return (new JavaScriptSerializer()).Serialize((object)JsOptions).TrimStart('{').TrimEnd('}');
+                return convertDictionaryToJsonBody(JsOptions);
             }
         }
 
@@ -111,12 +112,14 @@ public class _FilterOn<TTarget>
             private readonly TTarget _target;
             private readonly FilterRuleList _list;
             private readonly Func<string, Type, bool> _predicate;
+            private readonly IDictionary<string, object> _jsOptions;
 
-            public _FilterOn(TTarget target, FilterRuleList list, Func<string, Type, bool> predicate)
+            public _FilterOn(TTarget target, FilterRuleList list, Func<string, Type, bool> predicate, IDictionary<string, object> jsOptions)
             {
                 _target = target;
                 _list = list;
                 _predicate = predicate;
+                _jsOptions = jsOptions;
             }
 
             public TTarget Select(params string[] options)
@@ -150,6 +153,12 @@ public TTarget CheckBoxes(params string[] options)
                 return _target;
             }
 
+            public TTarget Text()
+            {
+                AddRule("{type: 'text'}");
+                return _target;
+            }
+
             public TTarget None()
             {
                 AddRule("null");
@@ -158,18 +167,53 @@ public TTarget None()
 
             private void AddRule(string result)
             {
+                if (result != "null" && this._jsOptions != null && this._jsOptions.Count > 0)
+                {
+                    var _jsOptionsAsJson = DataTableVm.convertDictionaryToJsonBody(this._jsOptions);
+                    result = result.TrimEnd('}') + ", " + _jsOptionsAsJson + "}";
+                }
                 _list.Insert(0, (c, t) => _predicate(c, t) ? result : null);
             }
         }
         public _FilterOn<DataTableVm> FilterOn<T>()
         {
-            return new _FilterOn<DataTableVm>(this, this.FilterTypeRules, (c, t) => t == typeof(T));
+            return FilterOn<T>(null); 
+        }
+        public _FilterOn<DataTableVm> FilterOn<T>(object jsOptions)
+        {
+            IDictionary<string, object> optionsDict = DataTableVm.convertObjectToDictionary(jsOptions);
+            return FilterOn<T>(optionsDict); 
+        }
+        public _FilterOn<DataTableVm> FilterOn<T>(IDictionary<string, object> jsOptions)
+        {
+            return new _FilterOn<DataTableVm>(this, this.FilterTypeRules, (c, t) => t == typeof(T), jsOptions);
         }
         public _FilterOn<DataTableVm> FilterOn(string columnName)
         {
-            return new _FilterOn<DataTableVm>(this, this.FilterTypeRules, (c, t) => c == columnName);
+            return FilterOn(columnName, null);
+        }
+        public _FilterOn<DataTableVm> FilterOn(string columnName, object jsOptions)
+        {
+            IDictionary<string, object> optionsDict = DataTableVm.convertObjectToDictionary(jsOptions);
+            return FilterOn(columnName, optionsDict); 
+        }
+        public _FilterOn<DataTableVm> FilterOn(string columnName, IDictionary<string, object> jsOptions)
+        {
+            return new _FilterOn<DataTableVm>(this, this.FilterTypeRules, (c, t) => c == columnName, jsOptions);
+        }
+
+        private static string convertDictionaryToJsonBody(IDictionary<string, object> dict)
+        {
+            // Converting to System.Collections.Generic.Dictionary<> to ensure Dictionary will be converted to Json in correct format
+            var dictSystem = new Dictionary<string, object>(dict);
+            return (new JavaScriptSerializer()).Serialize((object)dictSystem).TrimStart('{').TrimEnd('}');
         }
 
+        private static IDictionary<string, object> convertObjectToDictionary(object obj)
+        {
+            // Doing this way because RouteValueDictionary converts to Json in wrong format
+            return new Dictionary<string, object>(new RouteValueDictionary(obj));
+        }
     }
 
     public class FilterRuleList : List<Func<string, Type, string>>