uci-hugo-landingpage/layouts/shortcodes/youtube.html

{{ if .IsNamedParams }}
{{ $.Scratch.Set "maxwidth" ( $.Page.Site.Params.youtube.maxwidth | .Get "maxwidth" )  }}
{{ $.Scratch.Set "wpad" ( $.Page.Site.Params.youtube.wpad | .Get "wpad" )  }}
{{ $.Scratch.Set "nothumb" ( $.Page.Site.Params.youtube.disable_thumb | .Get "nothumb" )  }}
<div class="box box--embed box--column box--youtube">
    {{ with .Get "title" }}
    <div class="box__title">{{ . }}</div>
    {{ end }}
    <div
       youtube_id="{{ .Get "id" }}"
       {{ with .Get "start"}} start="{{ . }}"{{ end }}
       {{ with .Get "plist"}} list="{{ . }}"{{ end }}
       {{ with $.Scratch.Get "maxwidth"}} maxWidth="{{ . }}"{{ end }}
       {{ with $.Scratch.Get "wpad"}} wPad="{{ . }}"{{ end }}
       {{ with $.Scratch.Get "nothumb"}} nothumb="yes" {{ end }}
       >
  <!-- thumb and video get put here -->
    </div>
    {{ with .Get "caption"}}
    <div class="box__caption">{{ . }}</div>
    {{ end }}
</div>
{{ else }}
{{ $numOfParams := ( len .Params ) }}
<div class="box box--embed box--youtube"
       youtube_id="{{ .Get 0 }}"
       {{ if eq $numOfParams 2 }} start="{{ .Get 1 }}"{{ end }}
       {{ with $.Page.Site.Params.youtube.disable_thumb }} nothumb="yes" {{ end }}
       >
      <!-- image or iframe injected here -->
</div>
{{ end }}