Go templates: How do I access array item (arr[2]) in templates?

Question

How do I access an array item (e.g. a[2]) in templates?

Whenever I do this I get "bad character U+005B '['"

{{ .a[2] }}

score 163 · Answer 1 · answered Jul 05 '15 at 21:37

163

You need to use the index template function.

{{index .a 2}}

answered Jul 05 '15 at 21:37

Ken Bloom

83

To access a field on an array item use `{{ (index .a 2).field }}`. – webwurst Dec 02 '16 at 11:43
3

@webwurst what if field is an variable? `.$field` doesn't work – TomSawyer Feb 02 '18 at 08:32
8

@TomSawyer Wrap it in another index `{{ index (index .a 2) $field }}` – Erik Forsberg Oct 28 '19 at 13:39

score 21 · Accepted Answer · edited May 07 '21 at 09:05

21

to access a field on an array item as go templating in *.yaml format :

{{ (index .Values.fields 0).fieldItem }}

Index of zero(0) as in fields array of field as fieldItem .

edited May 07 '21 at 09:05

User12547645

answered Jan 14 '21 at 14:34

Sandeep Jain

2 Answers2