check_counter action
# After Rails 5.0 upgrade, some params don't get properly serialized.
# One case are filters: [['attr', 'op', 'val']] become [['attr'], ['op'], ['val']]
# if not passed upstream as a JSON string.
check_counter action
# After Rails 5.0 upgrade, some params don't get properly serialized.
# One case are filters: [['attr', 'op', 'val']] become [['attr'], ['op'], ['val']]
# if not passed upstream as a JSON string.