Fixes #5475 : Add missing properties to HttpRequestPlaceholder

src/Orchard/Mvc/MvcModule.cs

@@ -188,6 +188,18 @@ namespace Orchard.Mvc {
                 }
             }
 
+            public override string HttpMethod {
+                get {
+                    return "";
+                }
+            }
+
+            public override NameValueCollection Params {
+                get {
+                    return new NameValueCollection();
+                }
+            }
+
             public override string AppRelativeCurrentExecutionFilePath {
                 get {
                     return "~/";
@@ -236,6 +248,12 @@ namespace Orchard.Mvc {
                 }
             }
 
+            public override string[] UserLanguages {
+                get {
+                    return new string[0];
+                }
+            }
+
             public override HttpBrowserCapabilitiesBase Browser {
                 get {
                     return new HttpBrowserCapabilitiesPlaceholder();