I would like to know how to customize the following popup that rises in <layer:entity-field> I found the function fnPrepareInfo within layer but I do not know if That would be the function that I need and I do not know how to use it, if you could help me. I would like to show only some fields of my entity such as: Codigo - Nombre - Latitud -Longitud
You're on the right track ;-).
To customize the layer information you need to define a function in the .jspx file of the map:
<script>
function myLayerInfo(oMap,
sLayerId, sEntityPath, sGeoFieldName, sFeaturePKValue,
oFeature, oFeatureLayer, bSelected) {
return "<div> EL HTML que quieras mostrar</div>";
}
</script>
and in the tag of the layer add the property:
<layer:entity-field ... fnPrepareInfo="myLayerInfo"/>
As an example you can see the function that is used by default to generate the popup in leaflet.ext.gvnix.map.js createLayerInfoString function
Good luck!