osem-fcy/app/views/conference/_venue_map.html.haml

#map{style: "height: 500px;" }
- popup = "<h3>#{@conference.venue.name}</h3><br>#{@conference.venue.street}<br>#{@conference.venue.city}<br>#{@conference.venue.country_name}"
- content_for(:script_body) do
  :javascript
    // create a map in the "map" div, set the view to a given place and zoom
    var map = L.map('map', { scrollWheelZoom: false }).setView([#{@conference.venue.latitude}, #{@conference.venue.longitude}], 11);
    // add an OpenStreetMap tile layer
    L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
      attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="http://mapbox.com">Mapbox</a>',
      maxZoom: 18
    }).addTo(map);
    // add a marker in the given location, attach some popup content to it and open the popup
    L.marker([#{@conference.venue.latitude}, #{@conference.venue.longitude}]).addTo(map)
      .bindPopup("#{popup}")
      .openPopup();
    // Turn scrollwheel on when user clicks
    map.on('focus', function(e) {
      map.scrollWheelZoom.enable();
    });
    // Turn scrollwheel off once the map isn't in the viewport anymore
    $('#map').waypoint({
      handler: function(direction) {
        map.scrollWheelZoom.disable();
        //alert('map');
      },
      offset: '90%'
    });
    $('#map').waypoint({
      handler: function(direction) {
        map.scrollWheelZoom.disable();
        //alert('map');
      },
      offset: '10%'
    });