How to make mentions optional ?

[hopewise]

we have this workflow:

workflow:
  id: 0a7c8c2c-7bf5-xx-xx-xx
  name: teams
  description: teams
  disabled: false
  triggers:
    - type: alert
      cel: (source.contains("teams-api-test"))
  inputs: []
  consts: {}
  owners: []
  services: []
  steps: []
  actions:
    - name: teams-action
      provider:
        type: teams
        config: "{{ providers.teams-channel }}"
        with:
          message: ""
          sections:
            - type: TextBlock
              text: "{{alert.name}}"
            - type: TextBlock
              text: "{{alert.message}}"
          typeCard: message
          mentions: '{{alert.mentions}}'

works well, but sometimes, we clients do not send mentions, causing the alert to fail. Can we make it fallback to empty array when mentions is not sent ?

[dosubot[bot]]

You can make the mentions field optional by using Mustache-like conditional templating. Replace your mentions line with:

mentions: '{{#alert.mentions}}{{.}}{{/alert.mentions}}{{^alert.mentions}}[]{{/alert.mentions}}'

This tells the workflow engine: if alert.mentions exists, use it; if not, use an empty array. This approach leverages the IOHandler's support for conditional logic and default values in templates, so missing mentions won't cause failures anymore see code reference.

No built-in YAML syntax exists for this, but this template pattern is supported by the engine's rendering logic see IOHandler implementation.

To reply, just mention @dosu.

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