混凝土范围实例

Question

文本/模板包上的Go文档是如此抽象，以至于我很难弄清楚如何在对象的切片上进行实际的范围。到目前为止，我的尝试是这样的(这对我来说没有结果)：

package main
import (
    "os"
    templ "text/template"
)
type Context struct {
    people []Person
}
type Person struct {
    Name   string //exported field since it begins with a capital letter
    Senior bool
}
func main() {
    // Range example 
    tRange := templ.New("Range Example")
    ctx2 := Context{people: []Person{Person{Name: "Mary", Senior: false}, Person{Name: "Joseph", Senior: true}}}
    tRange = templ.Must(
    tRange.Parse(`
{{range $i, $x := $.people}} Name={{$x.Name}} Senior={{$x.Senior}}  {{end}}
`))
    tRange.Execute(os.Stdout, ctx2)
}

Answer 1

范围是正确的。问题是Context people字段不是出口。模板包忽略未导出的字段。将类型定义更改为：

type Context struct {
   People []Person // <-- note that People starts with capital P.
}

以及模板：

 {{range $i, $x := $.People}} Name={{$x.Name}} Senior={{$x.Senior}}  {{end}}

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