{{ $title := .Params.title }}

{{ if eq (printf "%T" .Params.participants) "string" }}
  {{ $.Scratch.Add "participants" (slice .Params.participants) }}
{{ else }}
  {{ range .Params.participants}}
    {{ $.Scratch.Add "participants" (slice .) }}
  {{ end }}
{{ end }}

{{ range .Site.Pages}}
  {{ if in .Params.sessions $title}}
    {{ $.Scratch.Add "participants" (slice .Params.title) }}
  {{ end }}
{{ end }}

{{ $value := uniq ($.Scratch.Get "participants") }}

{{ partial "utils/array-size-badge.html" (dict "this" . "value" $value) }}