with initial view.go and test

Author: stanistan

render_container_as_view_test.go

@@ -0,0 +1,26 @@
+package veun_test
+
+import (
+	"html/template"
+	"testing"
+
+	"github.com/alecthomas/assert/v2"
+
+	. "github.com/stanistan/veun"
+)
+
+func TestRenderContainerAsView(t *testing.T) {
+	html, err := Render(View{
+		Tpl: containerViewTpl,
+		Slots: map[string]Renderable{
+			"heading": ChildView1{},
+			"body":    ChildView2{},
+		},
+	})
+	assert.NoError(t, err)
+	assert.Equal(t, template.HTML(`<div>
+	<div class="heading">HEADING</div>
+	<div class="body">BODY</div>
+</div>`), html)
+
+}

render_container_test.go

@@ -9,24 +9,12 @@ import (
 	. "github.com/stanistan/veun"
 )
 
-func slotFuncStub(name string) (template.HTML, error) {
-	return template.HTML(""), nil
-}
-
 type ContainerView struct {
 	Heading Renderable
 	Body    Renderable
 }
 
-func mustParseTemplate(name, contents string) *template.Template {
-	return template.Must(
-		template.New(name).
-			Funcs(template.FuncMap{"slot": slotFuncStub}).
-			Parse(contents),
-	)
-}
-
-var containerViewTpl = mustParseTemplate("containerView", `<div>
+var containerViewTpl = MustParseTemplate("containerView", `<div>
 	<div class="heading">{{ slot "heading" }}</div>
 	<div class="body">{{ slot "body" }}</div>
 </div>`)

view.go

@@ -0,0 +1,41 @@
+package veun
+
+import "html/template"
+
+type View struct {
+	Tpl   *template.Template
+	Slots map[string]Renderable
+	Data  any
+}
+
+func (v View) Template() (*template.Template, error) {
+	return tplWithRealSlotFunc(v.Tpl, v.Slots), nil
+}
+
+func (v View) TemplateData() (any, error) {
+	return v.Data, nil
+}
+
+func tplWithRealSlotFunc(tpl *template.Template, slots map[string]Renderable) *template.Template {
+	return tpl.Funcs(template.FuncMap{
+		"slot": func(name string) (template.HTML, error) {
+			slot, ok := slots[name]
+			if ok {
+				return Render(slot)
+			}
+			return template.HTML(""), nil
+		},
+	})
+}
+
+func slotFuncStub(name string) (template.HTML, error) {
+	return template.HTML(""), nil
+}
+
+func MustParseTemplate(name, contents string) *template.Template {
+	return template.Must(
+		template.New(name).
+			Funcs(template.FuncMap{"slot": slotFuncStub}).
+			Parse(contents),
+	)
+}