Create pages from _content.gotmpl

Closes #12427
Closes #12485
Closes #6310
Closes #5074

resources/resource_spec.go

@@ -14,6 +14,7 @@
 package resources
 
 import (
+	"fmt"
 	"path"
 	"sync"
 
@@ -22,6 +23,7 @@ import (
 	"github.com/gohugoio/hugo/output"
 	"github.com/gohugoio/hugo/resources/internal"
 	"github.com/gohugoio/hugo/resources/jsconfig"
+	"github.com/gohugoio/hugo/resources/page/pagemeta"
 
 	"github.com/gohugoio/hugo/common/herrors"
 	"github.com/gohugoio/hugo/common/hexec"
@@ -143,6 +145,16 @@ type PostBuildAssets struct {
 	JSConfigBuilder      *jsconfig.Builder
 }
 
+func (r *Spec) NewResourceWrapperFromResourceConfig(rc *pagemeta.ResourceConfig) (resource.Resource, error) {
+	content := rc.Content
+	switch r := content.Value.(type) {
+	case resource.Resource:
+		return cloneWithMetadataFromResourceConfigIfNeeded(rc, r), nil
+	default:
+		return nil, fmt.Errorf("failed to create resource for path %q, expected a resource.Resource, got %T", rc.PathInfo.Path(), content.Value)
+	}
+}
+
 // NewResource creates a new Resource from the given ResourceSourceDescriptor.
 func (r *Spec) NewResource(rd ResourceSourceDescriptor) (resource.Resource, error) {
 	if err := rd.init(r); err != nil {
@@ -169,9 +181,9 @@ func (r *Spec) NewResource(rd ResourceSourceDescriptor) (resource.Resource, erro
 		paths:       rp,
 		spec:        r,
 		sd:          rd,
-		params:      make(map[string]any),
+		params:      rd.Params,
 		name:        rd.NameOriginal,
-		title:       rd.NameOriginal,
+		title:       rd.Title,
 	}
 
 	if rd.MediaType.MainType == "image" {