Golang - Template execution to string

go_template_string.go

package core

import (
	"fmt"
	"strings"
	"text/template"
)

type TplParser interface {
	GetTemplate() string
}

type TplResult struct {
	Out []string
}

func (r *TplResult) Write(p []byte) (n int, err error) {
	r.Out = append(r.Out, string(p))
	return len(p), nil
}

func (r *TplResult) GetTemplate() string {
	return strings.Join(r.Out, "")
}

func Test() {
	z, _ := template.New("foo").Parse(GenerateApplicationError())
	f := &TplResult{}
	z.Execute(f, z)
	fmt.Println(f.GetTemplate())
}

func GenerateApplicationError() string {
	return `
	package utils

	type ApplicationError struct {
		Message    string ` + "`json:\"message\"" + `
		StatusCode int    ` + "`json:\"status\"" + `
		Code       string ` + "`json:\"code\"" + `
	}
	`
}