nextras/datagrid — pull request #25 by voda (2014-02-05 16:07:31+00:00)
Title: Allow returning objects and boolean value false for filters

Only empty arrays, null and empty strings are excluded from filters. `strlen(false)` returns 0

see http://forum.nette.org/cs/7418-addon-dateinput-dateinput-html-5-kompatibilni-formularove-prvky-pro-vyber-data?p=2#p119135