Merge pull request #16 from bossm8/fb/toYaml

Add custom function `toYaml`

README.md

@@ -27,6 +27,14 @@ The templater includes [sprig](https://github.com/Masterminds/sprig) (which is a
 included in [helm](https://helm.sh/docs/chart_template_guide/functions_and_pipelines/))
 to extend the limited set of [go template functions](https://pkg.go.dev/text/template#hdr-Functions).
 
+It also contains a limited set of custom functions:
+
+- `toYaml`
+    Paste yaml structures into templates:
+    ```yaml
+    values: {{ toYaml .data | nindent 2 }}
+    ```
+
 ### Variants YML
 
 Flag: `--variants.def`
@@ -244,8 +252,8 @@ build-images:
                     --destination ${NAME}:${TAG}
             done
     needs:
-        job: generate-dockerfiles
-        artifacts: true
+        - job: generate-dockerfiles
+          artifacts: true
 ```
 
 ### Binary

utils/helpers.go

@@ -12,11 +12,23 @@ import (
 	"gopkg.in/yaml.v3"
 )
 
+// https://github.com/technosophos/k8s-helm/commit/431cc46cad3ae5248e32df1f6c44f2f4ce5547ba
+func toYaml(v interface{}) string {
+	data, err := yaml.Marshal(v)
+	if err != nil {
+		return ""
+	}
+	return string(data)
+}
+
 // Parses a template defined in a file.
 func ParseTemplate(
 	file string,
 ) *template.Template {
-	tpl := template.New(filepath.Base(file)).Funcs(sprig.FuncMap())
+	tpl := template.New(filepath.Base(file)).Funcs(
+		template.FuncMap{
+			"toYaml": toYaml,
+		}).Funcs(sprig.FuncMap())
 
 	var err error