[Users] dynamic layer choosing

[Sarah Schuessler]

Hi Eric,


thanks for your input.
Read below..




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On Thursday, April 15, 2010, Sarah Schuessler <sarah_flip at yahoo.de> wrote:
>> Hi,
>>
>> thanks for your example.
>>
>>If I want to use a FeatureStore with a grid then I have to define my fields, columns at the beginning as far as I know. But I don`t know these because I choose my layer at my application. So I have to use WMSGetFeatureInfo with a popup?

> each layer node could include the information required to create the
> grid. So when queries are activated in the layer tree for a layer you
> have all the information you need to create the grid.

How can I include information for my layer node? Which param or option 
will I use? Does it matter which type of layer (WMS, WFS,..) I´m 
selecting with a radiobutton? 

>> I`ve found this statement from Eric Lemoine at mapfish mailinglist:
>> using an
>>  OpenLayers.Control.WMSGetFeatureInfo with a
>>>
>> GeoExt.data.FeatureStore. Features received in the GetFeatureInfo
>>>
>>  response are added to the store with store.loadData(features).
>> which indicates that I can use a FeatureStore.

> yes, a feature store is a store containing features, the features you
> add to the store can come from any source, including responses to WMS
> GFI requests.

I have to define store´s fields and columns at code I thought. And columns differ from chosen layer. But your first suggestion tells me that I could define information so that my grid could be created. 

>> But this is only possible if I know my queryable layer?

> Sorry I don't understand this question.

>> I want to ask all features within current extent- so I need to use GetFeature with a filter?

> At least using WFS GetFeature + a spatial filter is one option yes.

Do you know another, better option?

Thanks.
best regards
Sarah

Cheers,

-- 
Eric Lemoine

Camptocamp France SAS
Savoie Technolac, BP 352
73377 Le Bourget du Lac, Cedex

Tel : 00 33 4 79 44 44 96
Mail : eric.lemoine at camptocamp.com
http://www.camptocamp.com
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