How to include default value with tpl function call

10/10/2019

I have top level chart and one of the subcharts. In subchart I want to use variables that defined in level chart, and if it is not found - use default value.

I have code like this in one of deployment definitions in my subchart

name: {{tpl .Values.global.my.GlobalValue .}}

where Values.global.my.GlobalValue - is parameter from top level chart.

Problem is when I try to install only subchart - I am failing, I need some defaults.

I tried to puth like below and it is not working

name: {{default defaultName tpl .Values.global.my.GlobalValue .}}
name: {{tpl .Values.global.my.GlobalValue . | defaultName}}

Could you please advise the correct way to do that.

-- liotur
deployment
kubernetes
kubernetes-helm

1 Answer

10/10/2019

As per Using the default function:

One function frequently used in templates is the default function: default DEFAULT_VALUE GIVEN_VALUE. This function allows you to specify a default value inside of the template, in case the value is omitted.

You should use:

name: {{ .Values.global.my.GlobalValue | default "defaultName" | quote }}

-- Eduardo Baitello
Source: StackOverflow