#Model class to store data of factory id and name.
#As per Ruby On Rails conventions, we have the corresponding table 
#french_factory_masters in the database.
class Fusioncharts::FrenchFactoryMaster < ActiveRecord::Base
    has_many :factory_output_quantities,
                :order => 'date_pro asc', 
                :foreign_key=>"factory_master_id"
                
    #Calculates the total output quantity by summing the quantity from factory_output_quantities             
    def total_quantity
       self.factory_output_quantities.sum(:quantity)
    end
end