builtin html template functions changes

view/README.md

@@ -44,7 +44,10 @@ func main() {
         // Bind: {{.message}} with "Hello world!"
         ctx.ViewData("message", "Hello world!")
         // Render template file: ./views/hello.html
-        ctx.View("hello.html")
+        if err := ctx.View("hello.html"); err != nil {
+		    ctx.HTML("<h3>%s</h3>", err.Error())
+		    return
+	    }
     })
 
     // Method:    GET
@@ -85,10 +88,10 @@ func main() {
     // builtin template funcs are:
     //
     // - {{ urlpath "mynamedroute" "pathParameter_ifneeded" }}
-    // - {{ render "header.html" }}
-    // - {{ render_r "header.html" }} // partial relative path to current page
-    // - {{ yield }}
-    // - {{ current }}
+    // - {{ render "header.html" . }}
+    // - {{ render_r "header.html" . }} // partial relative path to current page
+    // - {{ yield . }}
+    // - {{ current . }}
 
     // register a custom template func.
     tmpl.AddFunc("greet", func(s string) string {
@@ -106,7 +109,10 @@ func main() {
 
 func hi(ctx iris.Context) {
     // render the template file "./templates/hi.html"
-    ctx.View("hi.html")
+    if err := ctx.View("hi.html"); err != nil {
+		ctx.HTML("<h3>%s</h3>", err.Error())
+		return
+	}
 }
 ```
 
@@ -150,7 +156,10 @@ type page struct {
 func hi(ctx iris.Context) {
     //                      {{.Page.Title}} and {{Page.Name}}
     ctx.ViewData("Page", page{Title: "Hi Page", Name: "iris"})
-    ctx.View("hi.html")
+    if err := ctx.View("hi.html"); err != nil {
+		ctx.HTML("<h3>%s</h3>", err.Error())
+		return
+	}
 }
 ```