2 min read | by Jordi Prats
While writing Helm charts we might need to transform some values that are going to be defined as an array as a value into a comma separated string
Let's assume we have the following values defined:
application:
defaultRegions:
- name: eu-west-1
- name: us-west-1
If we need to tranform this array into a string we can use the join function:
This is an example on how to use it:
(...)
apiVersion: v1
kind: Pod
metadata:
(...)
initContainers:
- command:
- applicacion
- config
- '--regions'
- '{{ join "," .Values.application.defaultRegions }}'
env:
(...)
It's output would looks like this (we can use helm template or the --dry-run option to render the objects)
(...)
apiVersion: v1
kind: Pod
metadata:
(...)
initContainers:
- command:
- applicacion
- config
- '--regions'
- 'eu-west-1,us-west-1'
env:
(...)
Posted on 12/11/2021