add HttpView class

examples/static_link_example/JsonTestController.cc

@@ -14,6 +14,6 @@ void JsonTestController::asyncHandleHttpRequest(const HttpRequest& req,std::func
         array.append(user);
     }
     json["rows"]=array;
-    auto resp=std::unique_ptr<HttpResponse>(HttpResponse::newHttpResponse(json));
+    auto resp=std::unique_ptr<HttpResponse>(HttpResponse::newHttpJsonResponse(json));
     callback(*resp);
 }

lib/inc/drogon/HttpResponse.h

@@ -20,6 +20,7 @@
 
 #pragma once
 
+#include <drogon/HttpViewData.h>
 #include <string>
 #include <json/json.h>
 
@@ -100,8 +101,10 @@ namespace drogon
         virtual std::string getBody() const=0;
 
         static HttpResponse* newHttpResponse();
-        static HttpResponse* newHttpResponse(const Json::Value &data);
-
+        static HttpResponse* notFoundResponse();
+        static HttpResponse* newHttpJsonResponse(const Json::Value &data);
+        static HttpResponse* newHttpViewResponse(const std::string &viewName,const HttpViewData& data);
+        static HttpResponse* locationRedirectResponse(std::string path);
     };
 
 }

lib/inc/drogon/HttpView.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#include <drogon/DrObject.h>
+namespace drogon {
+    class HttpViewBase;
+    template <typename T>
+    class HttpView:public DrObject<T>,public HttpViewBase
+    {
+    protected:
+        HttpView(){}
+    };
+}

lib/inc/drogon/HttpViewData.h

@@ -0,0 +1,56 @@
+//
+// Copyright 2018, An Tao.  All rights reserved.
+//
+// Use of this source code is governed by a MIT license
+// that can be found in the License file.
+
+#pragma once
+#ifdef USE_STD_ANY
+
+#include <any>
+typedef std::any Any;
+#define Any_cast std::any_cast
+
+#elif USE_BOOST
+
+#include <boost/any.hpp>
+typedef boost::any Any;
+#define Any_cast boost::any_cast
+
+#else
+#error,must use c++17 or boost
+#endif
+
+
+#include <map>
+#include <string>
+
+typedef std::map<std::string,Any> ViewData;
+namespace drogon
+{
+class HttpViewData
+{
+public:
+    template <typename T>
+    const T get(const std::string &key) const
+    {
+        auto it=viewData_.find(key);
+        if(it!=viewData_.end())
+        {
+            return Any_cast<T>(it->second);
+        }
+        T tmp;
+        return tmp;
+    }
+    void insert(const std::string& key,Any &&obj)
+    {
+        viewData_[key]=std::move(obj);
+    }
+    void insert(const std::string& key,const Any &obj)
+    {
+        viewData_[key]=obj;
+    }
+protected:
+    ViewData viewData_;
+};
+}

lib/src/HttpResponseImpl.cc

@@ -15,6 +15,9 @@
 // that can be found in the License file.
 
 #include "HttpResponseImpl.h"
+#include "HttpViewBase.h"
+
+#include <drogon/HttpViewData.h>
 
 #include <trantor/utils/Logger.h>
 #include <stdio.h>
@@ -30,7 +33,7 @@ HttpResponse* HttpResponse::newHttpResponse()
     return res;
 }
 
-HttpResponse* HttpResponse::newHttpResponse(const Json::Value &data)
+HttpResponse* HttpResponse::newHttpJsonResponse(const Json::Value &data)
 {
     auto res=new HttpResponseImpl;
     res->setStatusCode(HttpResponse::k200Ok);
@@ -40,6 +43,26 @@ HttpResponse* HttpResponse::newHttpResponse(const Json::Value &data)
     builder["indentation"] = "";
     res->setBody(writeString(builder, data));
     return res;
+}
+HttpResponse* HttpResponse::notFoundResponse()
+{
+    auto res=new HttpResponseImpl;
+    res->setStatusCode(HttpResponse::k404NotFound);
+    res->setCloseConnection(true);
+
+    return res;
+}
+HttpResponse* HttpResponse::locationRedirectResponse(std::string path)
+{
+    auto res=new HttpResponseImpl;
+    res->setStatusCode(HttpResponse::k302Found);
+    res->redirect(path.c_str());
+    return res;
+}
+
+newHttpViewResponse(const std::string &viewName,const HttpViewData& data)
+{
+
 }
 const std::string HttpResponseImpl::web_content_type_to_string(uint8_t contenttype)
 {

lib/src/HttpViewBase.cc

@@ -0,0 +1,19 @@
+#include "HttpViewBase.h"
+#include <drogon/DrClassMap.h>
+#include <trantor/utils/Logger.h>
+#include <memory>
+using namespace drogon;
+HttpResponse* HttpViewBase::genHttpResponse(std::string viewName,const HttpViewData &data)
+{
+    LOG_TRACE<<"http view name="<<viewName;
+    auto obj=std::shared_ptr<DrObjectBase>(drogon::DrClassMap::newObject(viewName));
+    if(obj)
+    {
+        auto view= std::dynamic_pointer_cast<HttpViewBase>(obj);
+        if(view)
+        {
+            return view->genHttpResponse(data);
+        }
+    }
+    return drogon::HttpResponse::notFoundResponse();
+}

lib/src/HttpViewBase.h

@@ -0,0 +1,31 @@
+//
+// Copyright 2018, An Tao.  All rights reserved.
+//
+// Use of this source code is governed by a MIT license
+// that can be found in the License file.
+
+#pragma once
+
+#include <drogon/DrObject.h>
+#include <drogon/HttpViewData.h>
+#include <drogon/HttpResponse.h>
+#include <map>
+#include <string>
+
+namespace drogon
+{
+    class HttpViewBase:virtual public DrObjectBase
+    {
+    public:
+
+        static HttpResponse* genHttpResponse(std::string viewName,const HttpViewData &data);
+
+        virtual ~HttpViewBase(){};
+        HttpViewBase(){};
+    protected:
+
+        virtual HttpResponse* genHttpResponse(const HttpViewData&)=0;
+    };
+}
+
+