From 966dd2e30e9110e89f9872cc980e2d73f5fecf40 Mon Sep 17 00:00:00 2001
From: antao <antao@guoxin.cn>
Date: Wed, 29 Aug 2018 18:26:36 +0800
Subject: [PATCH] Update FunctionTraits of HttpApiBinder

---
 examples/simple_example/api_v1_ApiTest.cc | 2 +-
 examples/simple_example/api_v1_ApiTest.h  | 2 +-
 lib/inc/drogon/HttpApiBinder.h            | 6 +++++-
 3 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/examples/simple_example/api_v1_ApiTest.cc b/examples/simple_example/api_v1_ApiTest.cc
index 1b8dfe09..5a7c3bfe 100755
--- a/examples/simple_example/api_v1_ApiTest.cc
+++ b/examples/simple_example/api_v1_ApiTest.cc
@@ -1,7 +1,7 @@
 #include "api_v1_ApiTest.h"
 using namespace api::v1;
 //add definition of your processing function here
-void ApiTest::get(const HttpRequestPtr& req,const std::function<void (const HttpResponsePtr &)>&callback,int p1,std::string p2)
+void ApiTest::get(const HttpRequestPtr& req,const std::function<void (const HttpResponsePtr &)>&callback,int p1,std::string &&p2)
 {
     HttpViewData data;
     data.insert("title",std::string("ApiTest::get"));
diff --git a/examples/simple_example/api_v1_ApiTest.h b/examples/simple_example/api_v1_ApiTest.h
index cea661dd..63036d99 100755
--- a/examples/simple_example/api_v1_ApiTest.h
+++ b/examples/simple_example/api_v1_ApiTest.h
@@ -15,7 +15,7 @@ namespace api
 
             METHOD_LIST_END
             //your declaration of processing function maybe like this:
-            void get(const HttpRequestPtr& req,const std::function<void (const HttpResponsePtr &)>&callback,int p1,std::string p2);
+            void get(const HttpRequestPtr& req,const std::function<void (const HttpResponsePtr &)>&callback,int p1,std::string &&p2);
             void your_method_name(const HttpRequestPtr& req,const std::function<void (const HttpResponsePtr &)>&callback,double p1,int p2) const;
         };
     }
diff --git a/lib/inc/drogon/HttpApiBinder.h b/lib/inc/drogon/HttpApiBinder.h
index 4d834f72..59c7153d 100755
--- a/lib/inc/drogon/HttpApiBinder.h
+++ b/lib/inc/drogon/HttpApiBinder.h
@@ -38,6 +38,10 @@ namespace drogon{
     };
     template <typename T>
     struct BinderArgTypeTraits<T &&>{
+        static const bool isValid=true;
+    };
+    template <typename T>
+    struct BinderArgTypeTraits<const T &&>{
         static const bool isValid=false;
     };
     template <typename T>
@@ -108,7 +112,7 @@ namespace drogon{
         {
             //call this function recursively until parameter's count equals to the count of target function parameters
             static_assert(BinderArgTypeTraits<nth_argument_type<sizeof...(Values)>>::isValid,
-                          "your handler argument type must be value type or const left reference type"
+                          "your handler argument type must be value type or const left reference type or right reference type"
                           );
             typedef typename std::remove_cv<typename std::remove_reference<nth_argument_type<sizeof...(Values)>>::type>::type ValueType;
             ValueType value=ValueType();