Templating in Go with Example
In this tutorial, we are going to learn templating in Go. Using html/template package we’ll do templating. It provides a rich templating language for HTML templates. By default, Go protect the XSS attacks.
Table of Contents
Parsing Templates
At first, let’s see the way to parse template:
// way 1
tmpl := template.Must(template.ParseFiles("hello.html"))
// way 2
tmpl, err := template.ParseFiles("hello.html")Execute a Template
We have to execute a template in the request handler like:
func(w http.ResponseWriter, r *http.Request) {
tmpl.Execute(w, "the data")
}Create Struct & Template
We’re going to pass simple data to HTML template. Let’s create a Person struct:
type Person struct {
Name string
Email string
}Create a file called hello.html in the root directory of the project. Then paste this code:
<!DOCTYPE html>
<html>
<head>
<title>Go Template</title>
</head>
<body>
Hello {{.Name}}, Your email address: {{.Email}}
</body>
</html>In Go, we can get passed variable data like {{variable}}.
Parse Template and Run
Let’s see the complete example of parsing data to HTML template:
package main
import (
"log"
"html/template"
"net/http"
)
type Person struct {
Name string
Email string
}
func main() {
tmpl, err := template.ParseFiles("hello.html")
if err != nil {
log.Fatal("Parse: ", err)
return
}
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
data := Person{
Name: "Md Obydullah",
Email: "[email protected]",
}
tmpl.Execute(w, data)
})
http.ListenAndServe(":80", nil)
}To run this project, just type this command:
go run main.go
Md Obydullah
Software Engineer | Ethical Hacker & Cybersecurity...
Md Obydullah is a software engineer and full stack developer specialist at Laravel, Django, Vue.js, Node.js, Android, Linux Server, and Ethichal Hacking.