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13 lines
247 B
13 lines
247 B
6 years ago
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class EcDiscipline < ActiveRecord::Base
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validates_presence_of :code, :name
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has_many :ec_discipline_firsts
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# 专业数目
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def major_count
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count = 0
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self.ec_discipline_firsts.map{|f| count += f.ec_majors.count}
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count
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end
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end
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