Group services by tags

[tsiamer]

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Consul Template version

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consul-template v0.29.0 (34ada7a)

Configuration:

I would like to group consul service by tags, using the below:

{{range services}}
  {{range $tag, $services := service .Name | byTag }}
    {{if or (eq $tag "Volkswagen") }}
      {{ range $services }}
      {{ $tag}}
      {{ .Name }}
{{ end }}{{ end }}{{end}}{{end}}

Output:

      Volkswagen
       Golf

      Volkswagen
       BUW

I d like it to be:

Volkswagen is the tag:

      Volkswagen

      Golf
      BUW

Thanks

[eikenb]

Hey @Siamert, thanks for the question.

Have you tried moving the {{ $tag }} out of the range block? Seems like this would fix that for you. Eg. something like...

{{range services}}
  {{range $tag, $services := service .Name | byTag }}
    {{if or (eq $tag "Volkswagen") }}
      {{ $tag}}
      {{ range $services }}
      {{ .Name }}
{{ end }}{{ end }}{{end}}{{end}}

Hope this helps!

[tsiamer]

Hi Eikenb,

Thank for the reply, same output i am getting:

     Volkswagen
      Golf

      Volkswagen
      BUW

[eikenb]

Sorry, I thought that inner range was the one with multiple entries instead of the middle one. That will take a different approach.

How something like this one? ...

{{- range $tag,$srv := services | byTag }}
{{ if (ne \$tag "Volkswagen") }}{{continue}}{{end}}
    {{ \$tag }}:
    {{- range $srv }}
        {{ .Name -}}
{{ end }}{{ end }}

[tsiamer]

Thank you it is not working getting below error, but it gives an idea to start with. parse: template: :2: function "continue" not defined

[eikenb]

Hmm... I see I accidentally left in some escapes, eg. the \ in \$tag. Remove those and it should work (or see below). Sorry about that.

{{- range $tag,$srv := services | byTag }}
{{ if (ne $tag "Volkswagen") }}{{continue}}{{end}}
    {{ $tag }}:
    {{- range $srv }}
        {{ .Name -}}
{{ end }}{{ end }}

[tsiamer]

Hmm... I see I accidentally left in some escapes, eg. the \ in \$tag. Remove those and it should work (or see below). Sorry about that.

{{- range $tag,$srv := services | byTag }}
{{ if (ne $tag "Volkswagen") }}{{continue}}{{end}}
    {{ $tag }}:
    {{- range $srv }}
        {{ .Name -}}
{{ end }}{{ end }}

Working thank you John.

[eikenb]

Glad I could help.

If in the future you have a question and I'm not able to answer it for some reason (work priorities or whatever) remember to try using our discuss forum as it has more eyes on it than these github issues and you may get more help, faster.

Good luck!