chore: update gofiber example with new rendering (#878)

Co-authored-by: Adrian Hesketh <adrianhesketh@hushmail.com>

Author: bastianwegge

examples/integration-gofiber/README.md

@@ -0,0 +1,24 @@
+## Example
+
+This example demonstrates the usage of templ with gofiber.
+
+As soon as you start the server you can access http://localhost:3000/ and see the rendered page.
+
+If you change the URL to http://localhost:3000/john you will see your parameter printed on the page.
+
+This happens both through parameter passing into the templ component and through context using fiber locals.
+
+## Tasks
+
+### build-templ
+
+```
+templ generate
+```
+
+### run
+
+```
+go run .
+```
+

examples/integration-gofiber/go.mod

@@ -3,7 +3,7 @@ module github.com/a-h/templ/examples/integration-gofiber
 go 1.21
 
 require (
-	github.com/a-h/templ v0.2.501
+	github.com/a-h/templ v0.2.747
 	github.com/gofiber/fiber/v2 v2.52.5
 )
 

examples/integration-gofiber/home.templ

@@ -1,7 +1,19 @@
 package main
 
+import (
+  "context"
+)
+
+func NameFromContext(ctx context.Context) string {
+	if name, ok := ctx.Value("name").(string); ok && name != "" {
+		return name
+	}
+	return "World"
+}
+
 templ Home(name string) {
 	<div>Hello { name }</div>
+	<div>Hello { NameFromContext(ctx) } (from context)</div>
 }
 
 templ NotFound() {

examples/integration-gofiber/home_templ.go

@@ -4,15 +4,14 @@ import (
 	"github.com/a-h/templ"
 	"github.com/gofiber/fiber/v2"
 	"github.com/gofiber/fiber/v2/log"
-	"github.com/gofiber/fiber/v2/middleware/adaptor"
-	"net/http"
 )
 
 func main() {
 	app := fiber.New()
 
 	app.Get("/:name?", func(c *fiber.Ctx) error {
 		name := c.Params("name")
+		c.Locals("name", name)
 		if name == "" {
 			name = "World"
 		}
@@ -24,13 +23,11 @@ func main() {
 }
 
 func NotFoundMiddleware(c *fiber.Ctx) error {
-	return Render(c, NotFound(), templ.WithStatus(http.StatusNotFound))
+	c.Status(fiber.StatusNotFound)
+	return Render(c, NotFound())
 }
 
-func Render(c *fiber.Ctx, component templ.Component, options ...func(*templ.ComponentHandler)) error {
-	componentHandler := templ.Handler(component)
-	for _, o := range options {
-		o(componentHandler)
-	}
-	return adaptor.HTTPHandler(componentHandler)(c)
+func Render(c *fiber.Ctx, component templ.Component) error {
+	c.Set("Content-Type", "text/html")
+	return component.Render(c.Context(), c.Response().BodyWriter())
 }