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.ExecuteWriter(ctx, w) } 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") }