Helm include formatted map from values.yml - kubernetes-helm

Question

I have a simple values.yml file for my Helm chart:
DbMigration:
Resources:
requests:
memory: 256Mi
limits:
memory: 512Mi
In a definition for my database migration job, I have this:
spec:
activeDeadlineSeconds: 120
template:
spec:
restartPolicy: Never
containers:
- name: myMigrate
image: myRepo/myService:0.0.1
imagePullPolicy: Always
resources:
requests:
{{- range $key, $value := $.Values.DbMigration.Resources.requests }}
{{ $key }}: {{ $value }}
{{- end }}
limits:
{{- range $key, $value := $.Values.DbMigration.Resources.limits }}
{{ $key }}: {{ $value }}
{{- end }}
Is is there any way to simplify the resources area so that I can just include all the data from $.Values.DbMigration.Resources? What I have works, but there must be a more concise way. I tried using the toYaml function in a fashion similar to this:
{{- toYaml $.Values.DbMigration.Resources }}
However, that results in:
Error: UPGRADE FAILED: YAML parse error on myTemplate.yaml: error converting YAML to JSON: yaml: line 30: mapping values are not allowed in this context

Answer 1

If you want to render the block from values.yaml "as is" then toYaml is pretty much all you are going to need.
spec:
activeDeadlineSeconds: 120
template:
spec:
restartPolicy: Never
containers:
- name: myMigrate
image: myRepo/myService:0.0.1
imagePullPolicy: Always
resources:
{{- toYaml $.Values.DbMigration.Resources | nindent 12 }}
If you are still having convert to JSON error try to play with indentation a bit, it's all there is.

Answer 2

There are multiple ways to achieve this. One of them is, instead of using range you can simply change the values.yaml into
DbMigration: |
resources:
requests:
memory: 256Mi
limits:
memory: 512Mi
and then make a change in migration template as
resources:
{{- .Values.DbMigration | indent 12 }}
Please change the indentation accordingly.
Another method is to use range and toYaml
DbMigration:
Resources:
requests:
memory: 256Mi
limits:
memory: 512M
migration template
resources:
{{- range $key, $value := $.Values.DbMigration.Resources }}
{{ $key }}:
{{ toYaml $value }}
{{- end }}