Add Pluggable View Renderer Example

Gin meets pongo2! (https://github.com/flosch/pongo2)
2014-07-17 00:37:56 +09:00 · 2014-07-17 00:37:56 +09:00 · 2c3cdbb69f
commit 2c3cdbb69f
parent 3cf2d1338f
2 changed files with 70 additions and 0 deletions
--- a/examples/pluggable_renderer/example_pongo2.go
+++ b/examples/pluggable_renderer/example_pongo2.go
@ -0,0 +1,58 @@
+package main
+
+import (
+	"github.com/flosch/pongo2"
+	"github.com/gin-gonic/gin"
+	"net/http"
+)
+
+type pongoRender struct {
+	cache map[string]*pongo2.Template
+}
+
+func newPongoRender() *pongoRender {
+	return &pongoRender{map[string]*pongo2.Template{}}
+}
+
+func writeHeader(w http.ResponseWriter, code int, contentType string) {
+	if code >= 0 {
+		w.Header().Set("Content-Type", contentType)
+		w.WriteHeader(code)
+	}
+}
+
+func (p *pongoRender) Render(w http.ResponseWriter, code int, data ...interface{}) error {
+	file := data[0].(string)
+	ctx := data[1].(pongo2.Context)
+	var t *pongo2.Template
+
+	if tmpl, ok := p.cache[file]; ok {
+		t = tmpl
+	} else {
+		tmpl, err := pongo2.FromFile(file)
+		if err != nil {
+			return err
+		}
+		p.cache[file] = tmpl
+		t = tmpl
+	}
+	writeHeader(w, code, "text/html")
+	return t.ExecuteRW(w, ctx)
+}
+
+func main() {
+	r := gin.Default()
+	r.HTMLRender = newPongoRender()
+
+	r.GET("/index", func(c *gin.Context) {
+		name := c.Request.FormValue("name")
+		ctx := pongo2.Context{
+			"title": "Gin meets pongo2 !",
+			"name":  name,
+		}
+		c.HTML(200, "index.html", ctx)
+	})
+
+	// Listen and server on 0.0.0.0:8080
+	r.Run(":8080")
+}
--- a/examples/pluggable_renderer/index.html
+++ b/examples/pluggable_renderer/index.html
@ -0,0 +1,12 @@
+<!DOCTYPE html>
+<html lang="ja">
+  <head>
+    <meta charset="utf-8">
+    <title>{{ title }}</title>
+    <meta name="keywords" content="">
+    <meta name="description" content="">
+  </head>
+  <body>
+    Hello {{ name }} ! 
+  </body>
+</html>