28 lines
751 B
Ruby
28 lines
751 B
Ruby
# Article category
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class ArticleCategory < ActiveRecord::Base
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# @!attribute name
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# @return [String] Title of the category.
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# @!attrubute description
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# @return [String] Description (currently unused)
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# @!attribute articles
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# @return [Array<Article>] Articles with this category.
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has_many :articles
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normalize_attributes :name, :description
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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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# Deny deleting the category when there are associated articles.
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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.undeleted.exists?
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end
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end
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