The filter for dates ignores custom formats for a single date filter using this configuration
Datagrid.configure do |config|
config.date_formats = ["%d/%m/%Y"]
It always displays the date with the format %Y-%m-%d like 2014-02-25
I believe this was implemented only for range filters
Yes, I can confirm that.
Will make a fix tomorrow
Fix usage of date format for date filter without range. #90