[OpenLayers-Users] Re load map from external function and make a layer visible

[Christopher Schmidt]

On Fri, Oct 24, 2008 at 04:26:47AM -0700, S.Reena wrote:
> 
> Hi ,
> 
> I have made this layer in init() which I am calling when body loads in
> map.html
> 
>  wms[8] = new OpenLayers.Layer.WMS.Untiled(
>                  
> "query1","http://gis.rtbi-iitm.in/cgi-bin/mapserv?map=/var/www/html/v2/mapfile/query1.map",
>                   
> {'layers':"query1",'transparent':"true"},{'displayInLayerSwitcher':true},{'isBaseLayer':false});
> 
> wms[8].setVisibility(false);
> 
> This mapfile uses query table in database.
>  
> I have used map div for map and call a php page on a div 'popup' so that it
> makes 'map' div hidden and after the table creation it makes 'popup' div 
> hidden and makes 'map' div visible so that they both can come one onto the
> other.
>  
> Now in some other function showmap() I am changing that query table using
> php and making 
> 
> wms[8]. setVisibility(true) , but the thing is that it doesn't reflects the
> new changes in table to map as layer is created previously  and the changes
> are made on map only if I move up the panzoombar and then come down. I tried
> making this layer in showmap() instead of init() but didn't work. Also
> wms[8].reload() doesn't work ....Is there any way out I can reload init()
> and then display the layer in showmap() so that on calling showmap() ..map
> is reloaded and wms[8] is made visible.

This is a very confusing paragraph to me. I believe what you're asking
is "When I call setVisibility(true), my tiles don't update to represent
what is on the server."

If this is the case, then you need wms_layer.reload(true) (and OL 2.6+),
which forces itself around the broser cache, I expect.

Regards,
-- 
Christopher Schmidt
MetaCarta