goingtpl is template parser that supports file include and extends.
There is also a function to cache templates.
go get github.com/playree/goingtplWrite {{include "xxx.html"}} in the template file.
[parent.html]
<!DOCTYPE html>
<html><body>
<h1>Test code</h1>
{{template "footer"}}{{include "footer.html"}}
</body></html>[footer.html]
{{define "footer"}}
<p>Footer</p>
{{end}}All you have to do is parse the parent file with the prepared method.
tpl := template.Must(goingtpl.ParseFile("parent.html"))After parsing.
<!DOCTYPE html>
<html><body>
<h1>Test code</h1>
<p>Footer</p>
</body></html>Write {{extends "xxx.html"}} in the template file.
[base.html]
<!DOCTYPE html>
<html><body>
<h1>{{template "title" .}}</h1>
<div style="background-color: #ddf;">
{{template "content" .}}
</div>
<p>Footer</p>
</body></html>[page1.html]
{{extends "base.html"}}
{{define "title"}}Page1{{end}}
{{define "content"}}
<p>This is Page1.</p>
{{end}}Be sure to write {{extends "xxx.html"}} at the beginning.
All you have to do is parse the file with the prepared method.
tpl := template.Must(goingtpl.ParseFile("page1.html"))After parsing.
<!DOCTYPE html>
<html><body>
<h1>Page1</h1>
<div style="background-color: #ddf;">
<p>This is Page1.</p>
</div>
<p>Footer</p>
</body></html>We call the following method beforehand.
goingtpl.EnableCache(true)- ParseFile(filename string) (*template.Template, error)
- ParseFileFuncs(filename string, funcs template.FuncMap) (*template.Template, error)
- SetBaseDir(dir string)
- EnableCache(flg bool)
- ClearCache()
- AddFixedFunc(name string, fnc interface{})
https://github.com/playree/goingtpl/tree/master/example
example.go
package main
import (
"fmt"
"html/template"
"log"
"net/http"
"strings"
"time"
"github.com/playree/goingtpl"
)
func main() {
// goingtpl setting
goingtpl.SetBaseDir("./templates")
goingtpl.EnableCache(true)
goingtpl.AddFixedFunc(
"now",
func() string {
return time.Now().Format("2006-01-02 15:04:05")
},
)
http.HandleFunc("/example1", handleExample1)
http.HandleFunc("/example2", handleExample2)
http.HandleFunc("/clear", handleClear)
log.Fatal(http.ListenAndServe(":8088", nil))
}
func handleExample1(w http.ResponseWriter, r *http.Request) {
start := time.Now().UnixNano()
funcMap := template.FuncMap{
"repeat": func(s string, i int) string {
return strings.Repeat(s, i)
}}
tpl := template.Must(goingtpl.ParseFileFuncs("parent.html", funcMap))
// If you do not add a function
// e.g. goingtpl.ParseFile("xxx.html")
m := map[string]string{
"Date": time.Now().Format("2006-01-02"),
"Time": time.Now().Format("15:04:05"),
}
err := tpl.Execute(w, m)
if err != nil {
panic(err)
}
fmt.Printf("ExecTime=%d MicroSec\n",
(time.Now().UnixNano()-start)/int64(time.Microsecond))
}
func handleExample2(w http.ResponseWriter, r *http.Request) {
start := time.Now().UnixNano()
tpl := template.Must(goingtpl.ParseFileFuncs("page1.html", nil))
// If you do not add a function
// e.g. goingtpl.ParseFile("xxx.html")
m := map[string]string{
"Date": time.Now().Format("2006-01-02"),
"Time": time.Now().Format("15:04:05"),
}
err := tpl.Execute(w, m)
if err != nil {
panic(err)
}
fmt.Printf("ExecTime=%d MicroSec\n",
(time.Now().UnixNano()-start)/int64(time.Microsecond))
}
func handleClear(w http.ResponseWriter, r *http.Request) {
goingtpl.ClearCache()
fmt.Println("ClearCache")
}templates/parent.html
<!DOCTYPE html>
<html><body>
<div>parent.html</div>
<div style="padding-left: 2rem;">
{{template "child01" .}}{{include "parts/child01.html"}}
{{template "child02-1" .}}{{include "parts/child02.html"}}
{{template "child02-2" .}}
</div>
</body></html>templates/parts/child01.html
{{define "child01"}}
<div>
child01.html {{.Date}} {{.Time}}
<div style="padding-left: 2rem;">
{{template "child03-1"}}{{include "parts/child03.html"}}
</div>
</div>
{{end}}templates/parts/child02.html
{{define "child02-1"}}
<div>child02.html - 1</div>
{{end}}
{{define "child02-2"}}
<div>
child02.html - 2
<div style="padding-left: 2rem;">
{{template "child03-2" .}}{{include "parts/child03.html"}}
</div>
</div>
{{end}}templates/parts/child03.html
{{define "child03-1"}}
<i>child03.html - 1</i>
{{end}}
{{define "child03-2"}}
<i>child03.html - 2 </i><br>
Arguments = {{.Date}} {{.Time}}<br>
Func now = {{now}}<br>
Func repeat = {{repeat "A" 5}}
{{end}}templates/parts/base.html
<!DOCTYPE html>
<html><body>
<h1>{{template "title" .}}</h1>
<p>This is a sample of extends.</p>
<div style="background-color: #ddf;">
{{template "content" .}}
</div>
</body></html>templates/page1.html
{{extends "parts/base.html"}}
{{define "title"}}Page1{{end}}
{{define "content"}}
This is Page1.
<p>
Loaded {{.Date}} {{.Time}}
</p>
{{end}}Result of operation
