WhereToGo/wheretogo/templates/maps/map.html

{% extends "common/base.html" %}

{% block head_title %}WhereToGo{% endblock %}

{% block content %}

<div id="map"></div>
<script>
    const copy = "© <a href='https://www.openstreetmap.org/copyright'>OpenStreetMap</a> contributors";
    const url = "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png";
    const osm = L.tileLayer(url, { attribution: copy });
    const map = L.map("map", { layers: [osm], minZoom: 5 });
    map.
        locate()
        .on("locationfound", (e) => map.setView(e.latlng, 8))
        .on("locationerror", () => map.setView([0, 0], 5));
    
    async function load_facilities() {
        const facilities_url = `/api/facilities/?in_bbox=${map.getBounds().toBBoxString()}`
        const response = await fetch(facilities_url)
        const geojson = await response.json()
        return geojson
    }
    
    async function render_facilities() {
        const facilities = await load_facilities();
        L.geoJSON(facilities)
        .bindPopup((layer) => layer.feature.properties.name)
        .addTo(map);
    }
    
    map.on("moveend", render_facilities);
    
</script>

{% endblock %}