Rails date select options?

I have a date_select field in my rails application as follows: ``` <%= f.date_select :dateinstructed %> ``` I would like to re-order the drop down lists show they output as: ``` DD/MM/YYYY ``` According to what I have read you can use the :order option, but I am unsure how to actually use this option: ``` <%= f.date_select :dateinstructed, :order = {:day, :month, :year} %> ``` Obviously this isn't right, but what am I supposed to put in place of the: ``` :day, :month, :year ``` Any help would be appreciated! Thanks, Danny