如何通过 Helm Chart 将字符串列表（切片）呈现为 yaml 文件中的列表

Question

我有一个字符串数据列表或（切片），例如[string1, string2, string3]。我想在 yaml 文件中以列表方式呈现它

- string1
- string2
- string3

我怎样才能做到这一点？

我努力了

{{- range $val := $list }}
  - {{ $val }}
{{- end }}

但它将以下内容呈现为多行字符串

- |-
   - string1
   - string2
   - string2

任何想法？先感谢您

Answer 1

您可以使用格式化字符串输出来解决该问题。

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例如。

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值.yaml

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arr:\n  - string1\n  - string2\n  - string3\n

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_helpers.tpl

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{{/*\nPrint string from list split by ,\n*/}}\n{{- define "print.list" -}}\n{{- range $idx, $val := $.Values.arr -}}\n{{- if $idx }}\n{{- print ", "  -}} \n{{- end -}}\n{{- $val -}}\n{{- end -}}\n{{- end -}}\n

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例如，您要渲染的模板comfigmap.yaml

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apiVersion: v1\nkind: ConfigMap\nmetadata:\n  name: {{ include "test.fullname" . }}\ndata:\n  test: [{{- include "print.list" .}}]\n

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输出

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piVersion: v1\nkind: ConfigMap\nmetadata:\n  name: test\ndata:\n  test: [string1, string2, string3]\n

\n\n

---\xe2\x86\x93 2022-01-05 更新 \xe2\x86\x93---

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值.yaml

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arr:\n  - string1\n  - string2\n  - string3\n

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例如，您要渲染的模板comfigmap.yaml

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apiVersion: v1\nkind: ConfigMap\nmetadata:\n  name: {{ include "test.fullname" . }}\ndata:\n  test: |\n    {{- toYaml $.Values.arr | nindent 4 }}\n

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输出

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piVersion: v1\nkind: ConfigMap\nmetadata:\n  name: test\ndata:\n  test: |\n    - string1\n    - string2\n    - string3\n

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没有管道

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helm --dry-run --debug template test .

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例如，您要渲染的模板comfigmap.yaml

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apiVersion: v1\nkind: ConfigMap\nmetadata:\n  name: {{ include "test.fullname" . }}\ndata:\n  test: \n    {{- toYaml $.Values.arr | nindent 4 }}\n

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输出

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piVersion: v1\nkind: ConfigMap\nmetadata:\n  name: test\ndata:\n  test: \n    - string1\n    - string2\n    - string3\n

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range

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{{- range $i, $v := $.Values.arr }}\n- {{ $v }}\n{{- end }}\n

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输出

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- string1\n- string2\n- string3\n

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