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From http://gorevel.cn/topic/14 | |
1、使用刀符$访问全局变量,后面一种可以简化代码,省去了临时变量的定义 | |
{{$user := .user}} | |
{{range .bookings}} | |
{{$user.Name}} | |
{{end}} | |
或(推荐) | |
{{range .bookings}} | |
{{$.user.Name}} | |
{{end}} | |
2、在循环中使用计数 | |
{{range $index, $book := .books}} | |
{{$index}} {{$book}} | |
{{end}} | |
3、and or not,if else | |
{{if and false false}}<h1>It works!</h1>{{end}} | |
{{if or false false}}<h1>It works!</h1>{{end}} | |
{{if not false}}<h1>It works!</h1>{{end}} | |
{{if false}}<h1>It works!</h1>{{else if true}}oh yeah{{end}} | |
4、len 返回对象长度 | |
{{len .bookings}} | |
5、urlquery转义 | |
{{urlquery "http://golang.org"}} | |
6、巧用$.errors,服务端校验出错后,带回字段信息 | |
{{with $field := field "category.Name" .}} | |
<input type="text" value="{{if $.errors}}{{$field.Flash}}{{else}}{{$field.Value}}{{end}}"> | |
{{end}} | |
7、index,取回对象中的某个元素,支持array、map 、slice、string。 | |
{{$book := index .bookings 0}} | |
{{$value := index .map “key”}} | |
8、比较 | |
== {{eq 0 1}} | |
!= {{ne 0 1}} | |
< {{lt 0 1}} | |
<= {{le 0 1}} | |
> {{gt 0 1}} | |
>= {{ge 0 1}} | |
9、HTML 转义 ,比如将“<”改成“<”。 | |
{{. | html}} | |
10、pad,生成指定长度空格 | |
{{pad "" 4}} | |
11、printf,格式化小数 | |
{{printf "%.2f" 100.1234}} | |
12、输出原生HTML | |
{{raw .html}} | |
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