How do you pass structs to subtemplates in go?

I am trying to understand how to use the same template in Go several time passing different structs.

This is what I have tried:

import (
	"fmt"
	"html/template"
	"os"
)

type person struct {
	id    int
	name  string
	phone string
}

type page struct {
	p1 person
	p2 person
}

func main() {
	p1 := person{1, "Peter", "1001"}
	p2 := person{2, "Mary", "1002"}
	p := page{p1, p2}

	fmt.Println(p)

	t := template.Must(template.New("foo").Parse(`
	{{define "s1"}}
	<span id="{{.id}}">{{.name}} {{.phone}}</span>
	{{end}}
	{{template "s1" {{.p1}}}}{{template "s1" {{.p2}}}}
	`))

	t.Execute(os.Stdout, p)
}

But it does not work as expected:

panic: template: foo:5: unexpected "{" in template clause

The expected output is:

<span id="1">Peter 1001</span><span id="2">Mary 1002</span>

When you call the template function, you give 2 arguments (separated by a space):

• A defined template name ("s1")
• You object: .p1 in your case

So here is a working template in your case:

	t := template.Must(template.New("foo").Parse(`
    {{ define "s1" }}
        <span id="{{ .id }}">{{.name}} {{ .phone }}</span>
    {{ end }}

    {{ template "s1" .p1 }}
    {{ template "s1" .p2 }}
    `))
}