I need to render templates into different kinds of layout. Here's my directory structure.
myapp
|
│ main.go
│
├───static
│ script.js
│ style.css
│
└───templates
│ page1.tmpl
│ page2.tmpl
│ page3.tmpl
│ page4.tmpl
│ page5.tmpl
│
└───layouts
base1.tmpl
base2.tmpl
base3.tmpl
I have done rendering templates to a single layout template but, I can't make it work on multiple layouts. Here's what I got so far:
package main
import (
"html/template"
"net/http"
"fmt"
"github.com/urfave/negroni"
"github.com/oxtoacart/bpool"
"path/filepath"
"log"
)
var (
templates map[string]*template.Template
bufpool *bpool.BufferPool
)
func main() {
loadTemplates()
mux := http.NewServeMux()
mux.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
renderTemplate(w, "page1.tmpl",nil)
})
n := negroni.New()
n.Use(negroni.NewLogger())
n.UseHandler(mux)
http.ListenAndServe(":8080", n)
}
func renderTemplate(w http.ResponseWriter, name string, data map[string]interface{}) error {
tmpl, ok := templates[name]
if !ok {
return fmt.Errorf("The template %s does not exist.", name)
}
buf := bufpool.Get()
defer bufpool.Put(buf)
err := tmpl.ExecuteTemplate(buf, "base1.tmpl", data)
if err != nil {
return err
}
w.Header().Set("Content-Type", "text/html; charset=utf-8")
buf.WriteTo(w)
return nil
}
func loadTemplates() {
if templates == nil {
templates = make(map[string]*template.Template)
}
tmplDir := "templates/"
layouts, err := filepath.Glob(tmplDir + "layouts/*.tmpl")
if err != nil {
log.Fatal(err)
}
includes, err := filepath.Glob(tmplDir + "*.tmpl")
if err != nil {
log.Fatal(err)
}
for _, include := range includes {
files := append(layouts, include)
templates[filepath.Base(include)] = template.Must(template.ParseFiles(files...))
}
fmt.Print(includes)
bufpool = bpool.NewBufferPool(64)
}
Here's how base1.tmpl looks like:
{{define "base1"}}
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>{{block "title" .}}{{end}}</title>
</head>
<body>
{{template "content" .}}
</body>
</html>
{{end}}
And here's how page1.tmpl looks like:
{{define "title"}}Page 1{{end}}
{{define "content"}}
<p>Page 1 contents</p>
{{end}}
