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Fixed notice error
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@ -63,7 +63,7 @@ class GridFieldSortableObject extends DataExtension {
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* @param {string} $className Name of the DataObject to check
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*/
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public static function is_sortable_class($className) {
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if(in_array($classname, self::$sortable_classes)) {
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if(in_array($className, self::$sortable_classes)) {
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return true;
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}
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