completion not working when using a variable as a replace argument

[toby-griffiths]

This relates to #1415, but I didn't want to add a load of noise to that ticket.

I'm attempting to prepate a JSON string, to include variable names. I was unable to work out how to use them directly in the YAML object notation…

tasks:
  workspace:create:
    desc: 'Creates a workspace'
    vars:
      JSON:
        map:
          data:
            type: 'workspaces'
            attributes:
              name: '{{.NAME}}'
            relationships:
              project:
                data:
                  id: '{{.PROJECT_ID}}'

… so I'm using replace…

tasks:
  workspace:create:
    desc: 'Creates a workspace'
    required:
      vars:
        - 'PROJECT_ID'
        - 'NAME'
      JSON:
        map:
          data:
            type: 'workspaces'
            attributes:
              name: '__NAME__'
            relationships:
              project:
                data:
                  id: '__PROJECT_ID__'
    cmds:
      - 'echo {{.PROJECT_ID}}'
      - task: 'api:post'
        vars:
          ENDPOINT: 'organizations/{{.TERRAFORM_CLOUD_ORG_NAME}}/workspaces'
          JSON: '{{replace "__PROJECT_ID__" .PROJECT_ID (replace "__NAME__" .NAME (toJson .JSON))}}'

  api:post:
    internal: true
    cmds:
      - 'echo ''{{.JSON}}'''
      - exit 1

This seems to work fine, however when I attempt to autocomplete on the command line I get the error…

template: :1:21: executing "" at <.NAME>: invalid value; expected string

I tried using…

          JSON: '{{replace "__PROJECT_ID__" "{{.PROJECT_ID}}" (replace "__NAME__" "{{.NAME}}" (toJson .JSON))}}'

… however this resulted in a JSON string, when echoed in the api:post task contains empty values…

{"data":{"attributes":{"name":""},"relationships":{"project":{"data":{"id":""}}},"type":"workspaces"}}

If I echo the {{replace "__PROJECT_ID__" "{{.PROJECT_ID}}" (replace "__NAME__" "{{.NAME}}" (toJson .JSON))}} in the calling task then it contains the literal placehodlers…

tasks:
  workspace:create:
    desc: 'Creates a workspace'
    required:
      vars:
        - 'PROJECT_ID'
        - 'NAME'
      JSON:
        map:
          data:
            type: 'workspaces'
            attributes:
              name: '__NAME__'
            relationships:
              project:
                data:
                  id: '__PROJECT_ID__'
    cmds:
      # …
      - 'echo ''{{replace "__PROJECT_ID__" "{{.PROJECT_ID}}" (replace "__NAME__" "{{.NAME}}" (toJson .JSON))}}'''

… results in…

{"data":{"attributes":{"name":"{{.NAME}}"},"relationships":{"project":{"data":{"id":"{{.PROJECT_ID}}"}}},"type":"workspaces"}}

So then I tried passing the NAME & PROJECT_ID though to api:post as well in the hope it would interpolate the values where, but alas, they are still empty with this example…

tasks:
  workspace:create:
    desc: 'Creates a workspace'
    required:
      vars:
        - 'PROJECT_ID
        - 'NAME'
    vars:
      JSON:
        map:
          data:
            type: 'workspaces'
            attributes:
              name: '__NAME__'
            relationships:
              project:
                data:
                  id: '__PROJECT_ID__'
    cmds:
      - task: 'api:post'
        vars:
          ENDPOINT: 'organizations/{{.TERRAFORM_CLOUD_ORG_NAME}}/workspaces'
          JSON: '{{replace "__PROJECT_ID__" "{{.PROJECT_ID}}" (replace "__NAME__" "{{.NAME}}" (toJson .JSON))}}'
          NAME: '{{.NAME}}'
          PROJECT_ID: '{{.PROJECT_ID}}'

… or even without the placement…

tasks:
  workspace:create:
    desc: 'Creates a workspace'
    required:
      vars:
        - 'PROJECT_ID
        - 'NAME'
    vars:
      JSON:
        map:
          data:
            type: 'workspaces'
            attributes:
              name: '{{.NAME}}'
            relationships:
              project:
                data:
                  id: '{{.PROJECT_ID}}'
    cmds:
      - task: 'api:post'
        vars:
          ENDPOINT: 'organizations/{{.TERRAFORM_CLOUD_ORG_NAME}}/workspaces'
          JSON: '{{toJson .JSON)}}'
          NAME: '{{.NAME}}'
          PROJECT_ID: '{{.PROJECT_ID}}'

… but still the values of name and projectId are empty.

Any ideas if this is expected behaviour, I'm doing something wrong, or in the wrong way, or is this just not possible right now?

• Task version: v3.33.2-0.20240117105351-f1e2fee0887b (h1:YOkJH07u9obw1zZ68tIAuMUTlCZXHZN1emoQ/Vk3SJI=)
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