The logic makes sense in Rails. Something isn't quite clicking with DAL.
class Event < ActiveRecord::Base
# Sets the end_date to be +duration+ months after the start_date
def duration=(duration)
self.end_date = self.start_date + duration.to_i.months
end
end
<%= form_for(@event) do |f| %>
<%= f.date_select :start_date %>
<%= f.select :duration, [["6 months", 6], ["1 year", 12], ["2 years",
24]] %>
<%= f.submit %>
<% end %>
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