Golang模板忽略是否匹配

Question

I am trying to convert a golang template, and allow ignoring if the match is not found. Is that possible?

Playground

package main

import (
"bytes"
"fmt"
"text/template"
)
type Person struct {
Name string
Age  int
}
type Info struct {
Name string
Id   int
}

func main() {
msg := "Hello {{ .Id }} With name {{ .Name }}"
p := Person{Name: "John", Age: 24}
i := Info{Name: "none", Id: 5}

t := template.New("My template")
t, _ = t.Parse(msg)

buf := new(bytes.Buffer)
t.Execute(buf, p)
fmt.Println(buf.String())

buf = new(bytes.Buffer)
t.Execute(buf, i)
fmt.Println(buf.String())
}

I would like this to print

Hello {{ .Id }} with name John Hello 5 With name none

Answer 1

If you want it to print name only when it's not an empty string:

"Hello {{ .Id }} With name {{ if .Name }}{{ .Name }}{{ end }}"

Else, if you want to it print something else:

"Hello {{ .Id }} With name {{ if .Name }}{{ .Name }}{{ else }}none!{{ end }}"

Playground - also see the comparison operators for html/template and text/template.