Initial commit

24 - HTTP Servers/httpserver/dynamic.go

@@ -0,0 +1,45 @@
+package main
+
+import (
+    "html/template"
+    "net/http"
+    "strconv"
+)
+
+type Context struct {
+    Request *http.Request
+    Data []Product
+}
+
+var htmlTemplates *template.Template
+
+func HandleTemplateRequest(writer http.ResponseWriter, request *http.Request) {
+    path := request.URL.Path
+    if (path == "") {
+        path = "products.html"
+    }
+    t := htmlTemplates.Lookup(path)
+    if (t == nil) {
+        http.NotFound(writer, request)
+    } else {
+        err := t.Execute(writer, Context{  request, Products})
+        if (err != nil) {
+            http.Error(writer, err.Error(), http.StatusInternalServerError)
+        }
+    }
+}
+
+func init() {
+    var err error
+    htmlTemplates = template.New("all")
+    htmlTemplates.Funcs(map[string]interface{} {
+        "intVal": strconv.Atoi,
+    })    
+    htmlTemplates, err = htmlTemplates.ParseGlob("templates/*.html")
+    if (err == nil) {
+        http.Handle("/templates/", http.StripPrefix("/templates/", 
+            http.HandlerFunc(HandleTemplateRequest)))        
+    } else {
+        panic(err)
+    }
+}