Merge pull request #362 from CrowCpp/global_template_base

added `set_global_base` method

include/crow/app.h

@@ -179,6 +179,7 @@ namespace crow
         }
 
         /// Set a response body size (in bytes) beyond which Crow automatically streams responses (Default is 1MiB)
+
         ///
         /// Any streamed response is unaffected by Crow's timer, and therefore won't timeout before a response is fully sent.
         self_t& stream_threshold(size_t threshold)

include/crow/mustache.h

@@ -631,6 +631,13 @@ namespace crow
                 static std::string template_base_directory = "templates";
                 return template_base_directory;
             }
+
+            /// A base directory not related to any blueprint
+            inline std::string& get_global_template_base_directory_ref()
+            {
+                static std::string template_base_directory = "templates";
+                return template_base_directory;
+            }
         } // namespace detail
 
         inline std::string default_loader(const std::string& filename)
@@ -668,6 +675,17 @@ namespace crow
             }
         }
 
+        inline void set_global_base(const std::string& path)
+        {
+            auto& base = detail::get_global_template_base_directory_ref();
+            base = path;
+            if (base.back() != '\\' &&
+                base.back() != '/')
+            {
+                base += '/';
+            }
+        }
+
         inline void set_loader(std::function<std::string(std::string)> loader)
         {
             detail::get_loader_ref() = std::move(loader);

include/crow/routing.h

@@ -595,8 +595,8 @@ namespace crow
         {
             if (!custom_templates_base.empty())
                 mustache::set_base(custom_templates_base);
-            else if (mustache::detail::get_template_base_directory_ref() != "templates")
-                mustache::set_base("templates");
+            else if (mustache::detail::get_template_base_directory_ref() != mustache::detail::get_global_template_base_directory_ref())
+                mustache::set_base(mustache::detail::get_global_template_base_directory_ref());
 
             detail::routing_handler_call_helper::call<
               detail::routing_handler_call_helper::call_params<decltype(handler_)>,