template2.go

package main

import (
    "html/template"
    "os"
)

type Friend struct {
    Fname string
}

type Person struct {
    UserName string
    Emails   []string
    Friends  []*Friend
}

func main() {
    f1 := Friend{Fname: "minux.ma"}
    f2 := Friend{Fname: "xushiwei"}
    t := template.New("fieldname example")
    
    // pipelines 把输出全部转化html的实体
    t, _ = t.Parse(`hello {{.UserName |html}}!
            {{range .Emails}}
                an email {{.}}
            {{end}}
            {{with .Friends}}
            {{range .}}
                my friend name is {{.Fname}}
            {{end}}
            {{end}}
            `)
    p := Person{UserName: "Astaxie",
        Emails:  []string{"astaxie@beego.me", "astaxie@gmail.com"},
        Friends: []*Friend{&f1, &f2}}
    t.Execute(os.Stdout, p)
    
    
    tWithValue := template.New("template test")
    tWithValue = template.Must(tWithValue.Parse("不为空的 pipeline if demo: {{if `anything`}} 我有内容，我会输出. {{end}}\n"))
    tWithValue.Execute(os.Stdout, nil)
}