Cleaned up conditional rendering.

pkg/ui/components/head.go

@@ -27,17 +27,13 @@ func JS(r *ui.Request) Node {
 		})
 	`
 
-	var csrf Node
-
-	if len(r.CSRF) > 0 {
-		csrf = Script(Raw(fmt.Sprintf(htmxCSRF, r.CSRF)))
-	}
-
 	return Group{
 		Script(Src("https://unpkg.com/htmx.org@2.0.0/dist/htmx.min.js")),
 		Script(Src("https://unpkg.com/alpinejs@3.x.x/dist/cdn.min.js"), Defer()),
 		Script(Raw(htmxErr)),
-		csrf,
+		Iff(len(r.CSRF) > 0, func() Node {
+			return Script(Raw(fmt.Sprintf(htmxCSRF, r.CSRF)))
+		}),
 	}
 }
 

pkg/ui/pages/about.go

@@ -49,6 +49,10 @@ func About(ctx echo.Context) error {
 						Title: "Ent",
 						Body:  "Simple, yet powerful ORM for modeling and querying data. Visit <a href=\"https://entgo.io/\">entgo.io</a> to learn more.",
 					},
+					{
+						Title: "Gomponents",
+						Body:  "HTML components written in pure Go. They render to HTML 5, and make it easy for you to build reusable components. Visit <a href=\"https://gomponents.com/\">gomponents.com</a> to learn more.",
+					},
 				},
 			),
 		}

pkg/ui/pages/contact.go

@@ -15,26 +15,27 @@ func ContactUs(ctx echo.Context, form *forms.Contact) error {
 	r.Title = "Contact us"
 	r.Metatags.Description = "Get in touch with us."
 
-	g := make(Group, 0)
+	g := Group{
-
+		Iff(r.Htmx.Target != "contact", func() Node {
-	if r.Htmx.Target != "contact" {
+			return components.Message(
-		g = append(g, components.Message(
 				"is-link",
 				"",
 				Group{
 					P(Text("This is an example of a form with inline, server-side validation and HTMX-powered AJAX submissions without writing a single line of JavaScript.")),
 					P(Text("Only the form below will update async upon submission.")),
-			}))
+				},
-	}
+			)
-
+		}),
-	if form.IsDone() {
+		Iff(form.IsDone(), func() Node {
-		g = append(g, components.Message(
+			return components.Message(
 				"is-large is-success",
 				"Thank you!",
 				Text("No email was actually sent but this entire operation was handled server-side and degrades without JavaScript enabled."),
-		))
+			)
-	} else {
+		}),
-		g = append(g, form.Render(r))
+		Iff(!form.IsDone(), func() Node {
+			return form.Render(r)
+		}),
 	}
 
 	return r.Render(layouts.Primary, g)

pkg/ui/pages/home.go

@@ -18,17 +18,25 @@ func Home(ctx echo.Context, posts *models.Posts) error {
 	r.Metatags.Description = "This is the home page."
 	r.Metatags.Keywords = []string{"Software", "Coding", "Go"}
 
-	g := make(Group, 0)
+	// This pages helps to illustrate the different options you can take when using HTMX to introduce interactivity
+	// to your web application. The following three options are available, but here, we're opting for the first one.
+	// 1) Highly-optimized and progressive enhancement:
+	//    This is highly-optimized because the server is doing the least amount of work possible, only rendering
+	//    the least amount possible based on the incoming request. It's possible that even your route handler would
+	//    want to check the HTMX request in order to limit what it does. With HTMX, it's possible to still return a
+	//    normal, full page, but use hx-select to pluck out only the part you want to re-render. It requires some extra
+	//    condition checks and code but performance is improved. Progressive enhancement refers to having a fully
+	//    functional web app, even if JS was disabled, but providing the enhancement if JS is enabled. All of these
+	//    examples should continue to work fine without JS.
+	// 2) Not optimized and progressive enhancement:
+	//    As mentioned previously, you can remove all of these conditions, re-render the entire page for every request,
+	//    and rely on HTMX's hx-select to only replace what you want to (ie, the posts).
+	// 3) Optimized and partial renderings:
+	//    You could have a separate route that is only for fetching posts while paging, and that would render only
+	//    that partial HTML, which HTMX would then use to inject in to this page.
 
-	if r.Htmx.Target != "posts" {
+	headerMsg := func() Node {
-		var hello string
+		return Group{
-		if r.IsAuth {
-			hello = fmt.Sprintf("Hello, %s", r.AuthUser.Name)
-		} else {
-			hello = "Hello"
-		}
-
-		g = append(g,
 			Section(
 				Class("hero is-info welcome is-small mb-5"),
 				Div(
@@ -37,7 +45,10 @@ func Home(ctx echo.Context, posts *models.Posts) error {
 						Class("container"),
 						H1(
 							Class("title"),
-							Text(hello),
+							Iff(r.IsAuth, func() Node {
+								return Text(fmt.Sprintf("Hello, %s", r.AuthUser.Name))
+							}),
+							If(!r.IsAuth, Text("Hello")),
 						),
 						H2(
 							Class("subtitle"),
@@ -49,20 +60,24 @@ func Home(ctx echo.Context, posts *models.Posts) error {
 			),
 			H2(Class("title"), Text("Recent posts")),
 			H3(Class("subtitle"), Text("Below is an example of both paging and AJAX fetching using HTMX")),
-		)
+		}
 	}
 
-	g = append(g, posts.Render(r.Path(routenames.Home)))
+	filesMsg := func() Node {
-
+		return Message(
-	if r.Htmx.Target != "posts" {
-		g = append(g, Message(
 			"is-small is-warning mt-5",
 			"Serving files",
 			Group{
 				Text("In the example posts above, check how the file URL contains a cache-buster query parameter which changes only when the app is restarted. "),
 				Text("Static files also contain cache-control headers which are configured via middleware."),
 			},
-		))
+		)
+	}
+
+	g := Group{
+		Iff(r.Htmx.Target != "posts", headerMsg),
+		posts.Render(r.Path(routenames.Home)),
+		Iff(r.Htmx.Target != "posts", filesMsg),
 	}
 
 	return r.Render(layouts.Primary, g)

pkg/ui/pages/task.go

@@ -15,19 +15,18 @@ func AddTask(ctx echo.Context, form *forms.Task) error {
 	r.Title = "Create a task"
 	r.Metatags.Description = "Test creating a task to see how it works."
 
-	g := make(Group, 0)
+	g := Group{
-
+		Iff(r.Htmx.Target != "task", func() Node {
-	if r.Htmx.Target != "task" {
+			return components.Message(
-		g = append(g, components.Message(
 				"is-link",
 				"",
 				Group{
 					P(Raw("Submitting this form will create an <i>ExampleTask</i> in the task queue. After the specified delay, the message will be logged by the queue processor.")),
 					P(Text("See pkg/tasks and the README for more information.")),
-			}))
+				})
+		}),
+		form.Render(r),
 	}
 
-	g = append(g, form.Render(r))
-
 	return r.Render(layouts.Primary, g)
 }