{{- $pages := where site.Pages "Kind" "in" (slice "home" "section" "page") -}}
{{- $items := slice -}}
{{- range $pages -}}
  {{- $summary := .Params.summary | default .Summary | plainify | htmlUnescape -}}
  {{- $content := .Plain | htmlUnescape -}}
  {{- $items = $items | append (dict "id" .RelPermalink "title" .Title "url" .RelPermalink "summary" $summary "content" $content) -}}
{{- end -}}
{{- $items | jsonify -}}