Fix cache keys for bundled resoures in transform.Unmarshal

Fixes #6327

3 files changed, 32 insertions, 2 deletions

diff --git a/hugolib/hugo_smoke_test.go b/hugolib/hugo_smoke_test.go
index 539e79729..0cb130960 100644
--- a/hugolib/hugo_smoke_test.go
+++ b/hugolib/hugo_smoke_test.go
@@ -301,3 +301,33 @@ The content.
 
 	b.CreateSites().Build(BuildCfg{})
 }
+
+func TestBundleMany(t *testing.T) {
+
+	b := newTestSitesBuilder(t).WithSimpleConfigFile()
+	for i := 1; i <= 50; i++ {
+		b.WithContent(fmt.Sprintf("bundle%d/index.md", i), fmt.Sprintf(`
+---
+title: "Page %d"
+---
+		
+`, i))
+		b.WithSourceFile(fmt.Sprintf("content/bundle%d/data.yaml", i), fmt.Sprintf(`
+data: v%d		
+`, i))
+	}
+
+	b.WithTemplatesAdded("_default/single.html", `
+{{ $yaml := .Resources.GetMatch "*.yaml" }}
+{{ $data := $yaml | transform.Unmarshal }}
+data content: {{ $yaml.Content | safeHTML }}
+data unmarshaled: {{ $data.data }}
+`)
+
+	b.CreateSites().Build(BuildCfg{})
+
+	for i := 1; i <= 50; i++ {
+		b.AssertFileContent(fmt.Sprintf("public/bundle%d/data.yaml", i), fmt.Sprintf("data: v%d", i))
+		b.AssertFileContent(fmt.Sprintf("public/bundle%d/index.html", i), fmt.Sprintf("data unmarshaled: v%d", i))
+	}
+}
diff --git a/resources/resource.go b/resources/resource.go
index 7e755bdbc..7f52a7135 100644
--- a/resources/resource.go
+++ b/resources/resource.go
@@ -213,7 +213,7 @@ func (l *genericResource) Data() interface{} {
 }
 
 func (l *genericResource) Key() string {
-	return l.relTargetDirFile.path()
+	return l.RelPermalink()
 }
 
 func (l *genericResource) MediaType() media.Type {
diff --git a/resources/resource_test.go b/resources/resource_test.go
index 46391527d..7a0b8069d 100644
--- a/resources/resource_test.go
+++ b/resources/resource_test.go
@@ -52,7 +52,7 @@ func TestGenericResourceWithLinkFacory(t *testing.T) {
 
 	c.Assert(r.Permalink(), qt.Equals, "https://example.com/foo/foo.css")
 	c.Assert(r.RelPermalink(), qt.Equals, "/foo/foo.css")
-	c.Assert(r.Key(), qt.Equals, "foo.css")
+	c.Assert(r.Key(), qt.Equals, "/foo/foo.css")
 	c.Assert(r.ResourceType(), qt.Equals, "css")
 }