如何在Rails中的date_select中使用空白和默认日期？

Question

The following code works as expected, using the @the_date as the default selected date.

<%= date_select("the_date", "", :default => @the_date ) %>

However, in the case there is no date, it needs to show blanks. The following code displays blanks, but also forces the default selection to be blank even when the date is defined.

<%= date_select("patient_details[birth_date]", "", { :default => @the_date, :include_blank => true } ) %>

How do you set the default selection to a date, and to blank if the date is nil?

Working in Rails 3.07.

Thanks.

Answer 1

Rails ignores your :default if you also use either :include_blank or :prompt .

IMO this is a bug but there we go.

Answer 2

Just, :include_blank => @the_date.nil? , it should do the trick. See example below

date_select(:patient_details, :birth_date, { :default => @the_date, :include_blank=> @the_date.nil? })