postgresql - OpenLayer - 使用 Flask 在 Popup 上显示数据
问题描述
我制作了一个 OpenLayer 地图，它使用 Flask 从 SQL 数据库中获取数据。它根据存储在数据库中的数据显示一个标记和一个弹出窗口。我想以某种方式在通过 Flask 检索的弹出窗口中显示数据，目前我只能显示一个字符串“名称”。有没有一种方法可以从mydata.gps_longitude弹出窗口中显示数据？
<html>
<body>
<div id="mapdiv"></div>
<script src="http://www.openlayers.org/api/OpenLayers.js"></script>
<script>
map = new OpenLayers.Map("mapdiv");
map.addLayer(new OpenLayers.Layer.OSM());
var aarhusLat = new OpenLayers.LonLat( 10.102390 ,56.128181 )
.transform(
new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
map.getProjectionObject() // to Spherical Mercator Projection
);
var zoom=11;
var markers = new OpenLayers.Layer.Markers( "Markers" );
map.addLayer(markers);
map.setCenter (aarhusLat, zoom);
var locationData = {
gps_latitude : [{% for mydata in myIotdata %}
{{ mydata.gps_latitude }},
{% endfor %}],
gps_longitude : [{% for mydata in myIotdata %}
{{ mydata.gps_longitude }},
{% endfor %}]
}
/* console.log(locationData.gps_latitude[0]); */
var i;
for (i = 0; i < locationData.gps_latitude.length; i++) {
var aarhusLat2 = new OpenLayers.LonLat( locationData.gps_longitude[i], locationData.gps_latitude[i] )
.transform(
new OpenLayers.Projection("EPSG:4326"), // transform from WGS 1984
map.getProjectionObject() // to Spherical Mercator Projection
);
markers.addMarker(new OpenLayers.Marker(aarhusLat2));
var student = new OpenLayers.Layer.Text('GPS')
// A popup with some information about our location
var popup = new OpenLayers.Popup.FramedCloud(
"Popup",
aarhusLat2,
// I added a size to make it fit in the small fiddle window
new OpenLayers.Size(100,100),
"Name", // Here i would like to display the data from locationdata.
null,
true // set to true to enable a (x) button. false othervise
);
map.addPopup(popup); //Draw popup window on map.
map.addLayer(student);
}
</script>
</body>
</html>
