Nil value on datetime_select?

Question

When using <%= f.datetime_select :start %> for a "new" object form, how can you set the options to not select a date by default but rather a nil/null value? The field in the related model can optionally be null but by default the datetime_select control doesn't have a null option.

Answer 1

I think you want:

f.datetime_select :start, :include_blank => true

When start is nil, the fields will select the blank option. This also allows users to not enter a date.

See the documentation for date_select for details.