{{ define "main" }}
  <h1>{{ .Title }}</h1>
  {{ if .Content }}
    <p>{{- .Content -}}</p>
  {{ end }}
  <section>
    {{ if .IsSection }}
      {{ range sort .Pages "Date" "desc" }}
        {{ if ne .Layout "list" }}
          <div>{{ .Render "summary" }}</div>
        {{ end }}
      {{ end }}
    {{ else }}
      {{ $metric := .Params.sortby }}
      {{ $direction := "asc" }}
      {{ if eq .Params.sortby "rating" }}
        {{ $direction = "desc" }}
      {{ end }}
      {{ $pages := (where .Site.RegularPages "Type" "book") }}
      {{ $pages = (where $pages "Layout" "!=" "list")}}
      {{ if eq $direction "desc" }}
        {{ $pages = (sort ($pages.ByParam $metric).Reverse) }}
      {{ else }}
        {{ $pages = (sort ($pages.ByParam $metric)) }}
      {{ end }}
      {{ range $pages }}
        <div>{{ .Render "summary" }}</div>
      {{ end }}
    {{ end }}
  </section>
{{ end }}