Added HTMX partial support template rendering.

controller/controller.go

@@ -36,10 +36,13 @@ func NewController(c *services.Container) Controller {
 
 // RenderPage renders a Page as an HTTP response
 func (c *Controller) RenderPage(ctx echo.Context, page Page) error {
+	var buf *bytes.Buffer
+	var err error
+
 	// Page name is required
 	if page.Name == "" {
 		ctx.Logger().Error("page render failed due to missing name")
-		return echo.NewHTTPError(http.StatusInternalServerError, "Internal server error")
+		return echo.NewHTTPError(http.StatusInternalServerError)
 	}
 
 	// Use the app name in configuration if a value was not set
@@ -47,38 +50,65 @@ func (c *Controller) RenderPage(ctx echo.Context, page Page) error {
 		page.AppName = c.Container.Config.App.Name
 	}
 
-	// Parse and execute the templates for the Page
-	// As mentioned in the documentation for the Page struct, the templates used for the page will be:
-	// 1. The layout/base template specified in Page.Layout
-	// 2. The content template specified in Page.Name
-	// 3. All templates within the components directory
-	// Also included is the function map provided by the funcmap package
-	buf, err := c.Container.TemplateRenderer.ParseAndExecute(
-		"controller",
-		page.Name,
-		page.Layout,
-		[]string{
-			fmt.Sprintf("layouts/%s", page.Layout),
-			fmt.Sprintf("pages/%s", page.Name),
-		},
-		[]string{"components"},
-		page,
-	)
+	// Check if this is an HTMX request
+	if page.HTMX.Request.Enabled && !page.HTMX.Request.Boosted {
+		// Disable caching
+		page.Cache.Enabled = false
+
+		// Parse and execute
+		buf, err = c.Container.TemplateRenderer.ParseAndExecute(
+			"page:htmx",
+			page.Name,
+			"htmx",
+			[]string{
+				"htmx",
+				fmt.Sprintf("pages/%s", page.Name),
+			},
+			[]string{"components"},
+			page,
+		)
+	} else {
+		// Parse and execute the templates for the Page
+		// As mentioned in the documentation for the Page struct, the templates used for the page will be:
+		// 1. The layout/base template specified in Page.Layout
+		// 2. The content template specified in Page.Name
+		// 3. All templates within the components directory
+		// Also included is the function map provided by the funcmap package
+		buf, err = c.Container.TemplateRenderer.ParseAndExecute(
+			"page",
+			page.Name,
+			page.Layout,
+			[]string{
+				fmt.Sprintf("layouts/%s", page.Layout),
+				fmt.Sprintf("pages/%s", page.Name),
+			},
+			[]string{"components"},
+			page,
+		)
+	}
 
 	if err != nil {
 		ctx.Logger().Errorf("failed to parse and execute templates: %v", err)
-		return echo.NewHTTPError(http.StatusInternalServerError, "Internal server error")
+		return echo.NewHTTPError(http.StatusInternalServerError)
 	}
 
-	// Cache this page, if caching was enabled
-	c.cachePage(ctx, page, buf)
+	// Set the status code
+	ctx.Response().Status = page.StatusCode
 
 	// Set any headers
 	for k, v := range page.Headers {
 		ctx.Response().Header().Set(k, v)
 	}
 
-	return ctx.HTMLBlob(page.StatusCode, buf.Bytes())
+	// Apply the HTMX response, if one
+	if page.HTMX.Response != nil {
+		page.HTMX.Response.Apply(ctx)
+	}
+
+	// Cache this page, if caching was enabled
+	c.cachePage(ctx, page, buf)
+
+	return ctx.HTMLBlob(ctx.Response().Status, buf.Bytes())
 }
 
 // cachePage caches the HTML for a given Page if the Page has caching enabled
@@ -92,6 +122,12 @@ func (c *Controller) cachePage(ctx echo.Context, page Page, html *bytes.Buffer)
 		page.Cache.Expiration = c.Container.Config.Cache.Expiration.Page
 	}
 
+	// Extract the headers
+	headers := make(map[string]string)
+	for k, v := range ctx.Response().Header() {
+		headers[k] = v[0]
+	}
+
 	// The request URL is used as the cache key so the middleware can serve the
 	// cached page on matching requests
 	key := ctx.Request().URL.String()
@@ -102,8 +138,8 @@ func (c *Controller) cachePage(ctx echo.Context, page Page, html *bytes.Buffer)
 	cp := middleware.CachedPage{
 		URL:        key,
 		HTML:       html.Bytes(),
-		Headers:    page.Headers,
-		StatusCode: page.StatusCode,
+		Headers:    headers,
+		StatusCode: ctx.Response().Status,
 	}
 
 	err := marshaler.New(c.Container.Cache).Set(ctx.Request().Context(), key, cp, opts)