[OpenLayers-Users] Mouseover should show attributes from a database

[Jerome Freyre]

Of course it is easier,

But it depends on the numbers of informations you have to load and the
number of features your are loading.

In my case, there is a lot of informations to load for a lot of points...

So I prefer to load only the id and then load only the information that are
really useful for the users of my application.

Sincerly,
Jérome 


Eric Lemoine-3 wrote:
> 
> Jerome, you could also have the GeoJSON include all the information
> you need, thereby avoiding an extra client/server roundtrip, couldn't
> you? Eric
> 
> 2008/11/3, Jerome Freyre <jerome.freyre at hispeed.ch>:
>>
>> Hi,
>>
>> I don't know how you add the features on the map but in my case, i add my
>> features with a geojson.
>> This geojson contains properties  with properties that contains my DB
>> object
>> id:
>>
>> {"type": "FeatureCollection", "features": [{"type": "Feature","id":
>> "60347",
>> "properties": {  "myObjectID" : "123"},"geometry": {"type":
>> "Point","coordinates": [-4.0281, 5.3411]} }]}
>>
>> When my mouse is over the feature, I get the id like that :
>> var id = feature.attributes['myObjectID']
>>
>> then i made an ajax request (in my case with jquery) that give me db
>> informations of the object.
>>
>> 	var html = $.ajax({
>> 		async:false,
>> 		//sur la page
>> 	   	url: "../include/getObjectInfos.php?id="+id,
>> 	}).responseText;
>>
>> Finally, I add a popup that contains the ajax response.
>>
>>     // create popup located in the bottom right of the map
>>     var bounds = this.layer.map.getExtent();
>>
>> 	
>> 	// creation of the popup
>> 	var popup = new OpenLayers.Popup.FramedCloud("chicken",ll, size,  html,
>> null, true,  onPopupClose);
>>     map.addPopup(popup);
>>
>>
>> Hope it will be helpfull...
>>
>> Sincerly,
>> Jérome
>>
>>
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>>
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