HttpPost support.

Added RemoveItems overload that accepts routeValues.
Fix for VarybyCustom key issue.

Author: DevTrends

DevTrends.MvcDonutCaching/IKeyBuilder.cs

@@ -1,4 +1,5 @@
-using System.Web.Routing;
+using System.Collections.Generic;
+using System.Web.Routing;
 
 namespace DevTrends.MvcDonutCaching
 {
@@ -7,5 +8,6 @@ public interface IKeyBuilder
         string BuildKey(string controllerName);
         string BuildKey(string controllerName, string actionName);
         string BuildKey(string controllerName, string actionName, RouteValueDictionary routeValues);
+        string BuildKeyFragment(KeyValuePair<string, object> routeValue);
     }
 }

DevTrends.MvcDonutCaching/IOutputCacheManager.cs

@@ -9,6 +9,7 @@ public interface IOutputCacheManager
         void RemoveItem(string controllerName, string actionName, RouteValueDictionary routeValues);
         void RemoveItems();
         void RemoveItems(string controllerName);
-        void RemoveItems(string controllerName, string actionName);        
+        void RemoveItems(string controllerName, string actionName);
+        void RemoveItems(string controllerName, string actionName, RouteValueDictionary routeValues);
     }
 }

DevTrends.MvcDonutCaching/KeyBuilder.cs

@@ -1,4 +1,5 @@
-using System.Text;
+using System.Collections.Generic;
+using System.Text;
 using System.Web.Routing;
 
 namespace DevTrends.MvcDonutCaching
@@ -35,11 +36,16 @@ public string BuildKey(string controllerName, string actionName, RouteValueDicti
             {
                 foreach (var routeValue in routeValues)
                 {
-                    builder.AppendFormat("{0}={1}#", routeValue.Key.ToLowerInvariant(), routeValue.Value.ToString().ToLowerInvariant());
+                    builder.Append(BuildKeyFragment(routeValue));
                 }
             }
 
             return builder.ToString();
         }
+
+        public string BuildKeyFragment(KeyValuePair<string, object> routeValue)
+        {
+            return string.Format("{0}={1}#", routeValue.Key.ToLowerInvariant(), routeValue.Value.ToString().ToLowerInvariant());
+        }
     }
 }

DevTrends.MvcDonutCaching/KeyGenerator.cs

@@ -38,6 +38,11 @@ public string GenerateKey(ControllerContext context, CacheSettings cacheSettings
                 {
                     routeValues.Add(queryStringKey.ToLowerInvariant(), context.HttpContext.Request.QueryString[queryStringKey].ToLowerInvariant());
                 }
+
+                foreach (var formKey in context.HttpContext.Request.Form.AllKeys)
+                {
+                    routeValues.Add(formKey.ToLowerInvariant(), context.HttpContext.Request.Form[formKey].ToLowerInvariant());
+                }
             }
 
             if (!string.IsNullOrEmpty(cacheSettings.VaryByParam))
@@ -55,7 +60,7 @@ public string GenerateKey(ControllerContext context, CacheSettings cacheSettings
 
             if (!string.IsNullOrEmpty(cacheSettings.VaryByCustom))
             {
-                routeValues.Add("custom", context.HttpContext.ApplicationInstance.GetVaryByCustomString(HttpContext.Current, cacheSettings.VaryByCustom));
+                routeValues.Add(cacheSettings.VaryByCustom.ToLowerInvariant(), context.HttpContext.ApplicationInstance.GetVaryByCustomString(HttpContext.Current, cacheSettings.VaryByCustom));
             }
 
             var key = _keyBuilder.BuildKey(controllerName, actionName, routeValues);

DevTrends.MvcDonutCaching/OutputCacheManager.cs

@@ -72,7 +72,7 @@ public void RemoveItem(string controllerName, string actionName, RouteValueDicti
         /// </summary>
         public void RemoveItems()
         {
-            RemoveItems(null, null);
+            RemoveItems(null, null, null);
         }
 
         /// <summary>
@@ -81,7 +81,7 @@ public void RemoveItems()
         /// <param name="controllerName">The name of the controller.</param>
         public void RemoveItems(string controllerName)
         {
-            RemoveItems(controllerName, null);
+            RemoveItems(controllerName, null, null);
         }
 
         /// <summary>
@@ -90,6 +90,17 @@ public void RemoveItems(string controllerName)
         /// <param name="controllerName">The name of the controller that contains the action method.</param>
         /// <param name="actionName">The name of the controller action method.</param>
         public void RemoveItems(string controllerName, string actionName)
+        {
+            RemoveItems(controllerName, actionName, null);
+        }
+
+        /// <summary>
+        /// Removes all output cache entries for the specified controller, action and parameters.
+        /// </summary>
+        /// <param name="controllerName">The name of the controller that contains the action method.</param>
+        /// <param name="actionName">The name of the controller action method.</param>
+        /// <param name="routeValues">A dictionary that contains the parameters for a route.</param>
+        public void RemoveItems(string controllerName, string actionName, RouteValueDictionary routeValues)
         {
             var enumerableCache = _outputCacheProvider as IEnumerable<KeyValuePair<string, object>>;
 
@@ -102,6 +113,15 @@ public void RemoveItems(string controllerName, string actionName)
 
             var keysToDelete = enumerableCache.Where(x => x.Key.StartsWith(key)).Select(x => x.Key);
 
+            if (routeValues != null)
+            {
+                foreach (var routeValue in routeValues)
+                {
+                    var value = routeValue;
+                    keysToDelete = keysToDelete.Where(x => x.Contains(_keyBuilder.BuildKeyFragment(value)));
+                }
+            }
+
             foreach (var keyToDelete in keysToDelete)
             {
                 _outputCacheProvider.Remove(keyToDelete);