Fix for 1.8 Compatibility

[jonpday]

Hi,

The following patch will make the module compatible with 1.8, are you interested in receiving a pull request and publishing the updated version on Magento Connect? I haven't tested the update on older versions but will do if you are planning to publish the update...

Thanks,
JD

commit 24bc23405f70456c5ccbee92f381f5d0500724bf
Author: Jonathan Day <jonathan@aligent.com.au>
Date:   Mon Oct 7 11:55:37 2013 +1030

resolve 1.8 compatibility issue for TBT_EnhancedGrid


diff --git a/app/code/community/TBT/Enhancedgrid/Block/Catalog/Product/Grid.php b/app/code/community/TBT/Enhancedgrid/Block/Catalog/Produ
index ad81983..2ba0953 100644
--- a/app/code/community/TBT/Enhancedgrid/Block/Catalog/Product/Grid.php
+++ b/app/code/community/TBT/Enhancedgrid/Block/Catalog/Product/Grid.php
@@ -647,16 +647,16 @@ class TBT_Enhancedgrid_Block_Catalog_Product_Grid extends Mage_Adminhtml_Block_W
        $collection 
            ->joinField('categories',
                $ccev_t,
-                   'GROUP_CONCAT(_table_categories.value)',
+                   'GROUP_CONCAT(DISTINCT at_categories.value)',
                'entity_id=category_id',
-                   "_table_categories.attribute_id={$category_name_attribute_id}",
+                   "at_categories.attribute_id={$category_name_attribute_id}",
                'left');
        $collection 
            ->joinField('category',
                $ccev_t,
                'value',
                'entity_id=category_id',
-                   "_table_category.attribute_id={$category_name_attribute_id}",
+                   "at_category.attribute_id={$category_name_attribute_id}",
                'left');
        $collection->groupByAttribute('entity_id');

[jayelkaake]

Hey @jonpday, almost 3 years later I'm only now responding! Sorry!!
If you still want, you can submit a PR and I'll merge. Just make sure it also works with older versions of Enhancegrid please :)