Omphaloskepsis-2/layouts/cv/locations.html

{{ define "title" }}
  CV by Location | {{ .Site.Title }}
{{ end }}

{{ define "main-class" }}--section location-map{{ end }}

{{ define "header-scripts" }}
    <link rel="stylesheet" href="/css/leaflet.css"/>
{{ end }}

{{ define "footer-scripts" }}
    <script src="/js/leaflet.js"></script>
    <script src="/js/leaflet-heat.js"></script>
    <script>
        var map = L.map('map').setView([55, -3], 3);

        L.tileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {
            maxZoom: 19,
            attribution: '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a>'
        }).addTo(map);

        {{- range $.Site.Data.locations -}}
            /* L.marker([{{ .lat }}, {{ .lon }}]).addTo(map); */
        {{- end -}}

        L.heatLayer(
            [
            {{- range .Site.AllPages -}}
                {{- with .Params.locations -}}
                    {{- range . -}}
                        {{- with ( index $.Site.Data.locations . ) -}}
                            [ {{ .lat }}, {{ .lon }} ],
                        {{- end -}}
                    {{- end -}}
                {{- end -}}
            {{- end -}}
            ],
            {
                minOpacity: 0.5,
                gradient: {0.2: 'blue', 0.5: 'lime', 1: 'red'}

            }
        ).addTo(map);
    </script>
{{ end }}

{{ define "main-header" }}
    <header class="site-content__header">
        <h1 class="page-title">{{ .Title | safeHTML }}.</h1>
        {{ .Content }}
    </header>
{{ end }}

{{ define "main-body" }}
<article class="site-content__body site-content__body--chart">
    <div id="map" style="width: 100%; height: 500px; margin: 0; display: block;"></div>

    <ul style="grid-area: section-content">
    {{- range $key, $value := $.Site.Data.locations -}}
        <li itemscope itemtype="https://schema.org/Place">{{ $key }}</li>
    {{- end -}}
    </ul>
</article>
{{ end }}