16 lines
375 B
Ruby
16 lines
375 B
Ruby
class ArticleCategory < ActiveRecord::Base
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has_many :articles
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validates :name, :presence => true, :uniqueness => true, :length => { :in => 2..20 }
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before_destroy :check_for_associated_articles
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protected
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def check_for_associated_articles
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raise I18n.t('activerecord.errors.has_many_left', collection: Article.model_name.human) if articles.exists?
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end
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end
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