golang text/template的用法: if, else, with

golang的text/template 包在使用的时候还是有些不便,特别是涉及到逻辑判断的时候。经过测试,发现下面这种写法是正确的。 1.2.1的环境下没有问题!

相关资料:https://gowalker.org/text/template 。

eq是一个函数。

package main
import "text/template"
import "os"
func main() {
	type Inventory struct {
		Material string
		Count int
	}
	sweaters := Inventory{"axe", 0}
	html := `
	"test").Parse("{{.Count}} items are made of {{.Material}}"
	{{$a := .Count}}
	{{$b := 17}}
	{{$c := 18}}	
 
	{{if eq .Count $b}}
	oo
	{{else}}
	xx
	{{end}}
	`
	tmpl, err := template.New("test").Parse(html)
	if err != nil {
		panic(err)
	}
	err = tmpl.Execute(os.Stdout, sweaters)
	if err != nil {
		panic(err)
	}
}

{{len .Statistics | print}}
{{$le:= len .Statistics}}
{{if eq $le 0}} 
 is 0 
{{else}} 
 not 0 
{{end}}

if/else 与or, eq函数的用法

{{else if or (eq $e.Status -2) (eq $e.Status -3)}}

{{with and ($et := .Extension) ($ch := .Changelog) }}
{{range $e := $ch}}
...
{{$et.Name}} {{$e.Version}}

{{end}}
{{end}}

补充:

There is a variable, ,ドル that you can use to solve your problem. From the text/template docs: "When execution begins, $ is set to the data argument passed to Execute, that is, to the starting value of dot." In your case:

{{with ($ch := .Changelog) }}

{{range $e := $ch}}

<!--begin ch-->

<span>
{{$e.CreateTime}} html1
</span>


{{with ($u:= $.User)}}
<a href="/xxx?cid={{$e.Cid}}">html2
</a>
{{end}}

<!--end ch-->
{{end}}
{{end}}

支持的语法虽然少,但是完全够用!

本文来自:CSDN博客

感谢作者:u013834131

查看原文:golang text/template的用法: if, else, with

• 编辑
• 预览