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kubernetes-helmgo-templates

Read variable inside double bracket in Helm template

I need read a field file from values.yml for a configMap setup, it's my template:

{{- if .Values.configMap.enabled }}
{{- range .Values.configMapMount }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .name }}
data:
  {{ .file }}: {{ $.Files.Get "files/{{ .file }}" | printf "%s" | indent 4 }}
{{- end }}
{{- end }}

Obviously this template doesn't work...there is a way to read {{ .file }} inside "files/{{ .file }}" ?

Thanks

Solution

  • You can't nest template actions. Use a variable instead.

    Something like this:

    {{- if .Values.configMap.enabled }}
{{- range .Values.configMapMount }}
apiVersion: v1
kind: ConfigMap
metadata:
  name: {{ .name }}
data:
  {{- $f := printf "files/%s" .file }}
  {{ .file }}: {{ $.Files.Get $f | printf "%s" | indent 4 }}
{{- end }}
{{- end }}

    https://go.dev/play/p/pRd5WNc10Zt