nathanwoodburn/go-webserver-template
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feat: Add env to go template
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This commit is contained in:
Nathan Woodburn 2024-06-19 22:41:15 +10:00
parent 1fa557838b
commit 75c2becc40
Signed by: nathanwoodburn
GPG Key ID: 203B000478AD0EF1
6 changed files with 32 additions and 1 deletions
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1
.env.example Normal file
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@ -0,0 +1 @@
MESSAGE=Test MESSAGE

1
.gitignore vendored
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@ -1,2 +1,3 @@
main
.env

5
go.mod Normal file
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@ -0,0 +1,5 @@
module git.woodburn.au/nathanwoodburn/go-webserver-template
go 1.21.3
require github.com/joho/godotenv v1.5.1

2
go.sum Normal file
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@ -0,0 +1,2 @@
github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=

21
main.go
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@ -5,10 +5,23 @@ import (
"html/template"
"log"
"net/http"
"os"
"path/filepath"
"github.com/joho/godotenv"
)
func main() {
// Load the .env file
err := godotenv.Load()
if err != nil {
// Try to load the .env.example file
fmt.Println("Error loading .env file, trying .env.example")
err = godotenv.Load(".env.example")
if err != nil {
log.Fatal("Error loading .env.example file")
}
}
http.HandleFunc("/", mainHandler)
http.HandleFunc("/assets/", assetHandler)
@ -39,6 +52,9 @@ func mainHandler(w http.ResponseWriter, r *http.Request) {
func getHandler(relPath string, w http.ResponseWriter, r *http.Request) {
tmplPath := filepath.Join("templates", filepath.Clean(relPath)+".html")
// Get message from Env
message := os.Getenv("MESSAGE")
// Parse the template
tmpl, err := template.ParseFiles(tmplPath)
if err != nil {
@ -46,8 +62,11 @@ func getHandler(relPath string, w http.ResponseWriter, r *http.Request) {
return
}
// Create a map to hold the data
requestData := map[string]interface{}{"envMessage": message}
// Execute the template
err = tmpl.Execute(w, nil)
err = tmpl.Execute(w, requestData)
if err != nil {
http.Error(w, "Error rendering template", http.StatusInternalServerError)
}

3
templates/index.html
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@ -9,6 +9,9 @@
</head>
<body>
<h1>Hello, World!</h1>
{{if .envMessage }}
<p>{{.envMessage}}</p>
{{end}}
{{if .message}}
<p>{{.message}}</p>