app/models/chouette/time_table_date.rb
class Chouette::TimeTableDate < Chouette::ActiveRecord
self.primary_key = "id"
belongs_to :time_table, inverse_of: :dates
acts_as_list :scope => 'time_table_id = #{time_table_id}',:top_of_list => 0
validates_presence_of :date
validates_uniqueness_of :date, :scope => :time_table_id
def self.model_name
ActiveModel::Name.new Chouette::TimeTableDate, Chouette, "TimeTableDate"
end
end