Mapscript getProjection error caused by select.php when GROUP is used rather than LAYER

[tchaddad]

Querying a LAYER works fine as an individual layer, but querying the same LAYER as soon as it was combined in a GROUP with other related layers, causes a 500 server error:

Call to a member function getProjection() on a non-object in \htdocs\php\select.php on line 215

This is happening with the buffered_select tool in GM 2.6.1.

reported first here:
http://lists.osgeo.org/pipermail/mapserver-users/2012-September/073223.html

and discussed here:
http://osgeo-org.1560.x6.nabble.com/Geomoose-users-getProjection-error-select-php-td5058806.html

[tchaddad]

Suggested approach for a fix from @klassenjs (not tested):

"Ideally, the PHP would check for groups and explode them into layers then act on the layers.

That would probably be implemented by checking both the name and group of each layer and including the layer if either match as it iterates through. Something like this :

diff --git a/htdocs/php/select.php b/htdocs/php/select.php

--- a/htdocs/php/select.php
+++ b/htdocs/php/select.php
@@ -193,7 +193,14 @@ if($layer == 'all') {
               array_push($layersToQuery, $map->getLayer($i));
      }
} else {
-       array_push($layersToQuery, $map->getLayerByName($layer));
+       $group_layers = $map->getLayersIndexByGroup($layer);
+       if(count($group_layers) > 0) {
+               foreach($group_layers as $layerid) {
+                       array_push($layersToQuery, $map->getLayer($layerid);
+               }
+       } else {
+               array_push($layersToQuery, $map->getLayerByName($layer));
+       }
 }
$foundShapes = array();

Also, might have to be more careful about not including the same layer twice."

[theduckylittle]

I moved how layersToQuery array is built. Funny enough we have a loop that disabled all of the layers, so I moved the logic there since we were looping there anyway.

[theduckylittle]

Test is current passing: select_php_test.php:SelectTest.test_ticket31