foodsoft/app/models/article_category.rb

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# Article category
class ArticleCategory < ApplicationRecord
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# @!attribute name
# @return [String] Title of the category.
# @!attrubute description
# @return [String] Description (currently unused)
# @!attribute articles
# @return [Array<Article>] Articles with this category.
has_many :articles
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# @!attribute order_articles
# @return [Array<OrderArticle>] Order articles with this category.
has_many :order_articles, through: :articles
# @!attribute orders
# @return [Array<Order>] Orders with articles in this category.
has_many :orders, through: :order_articles
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normalize_attributes :name, :description
validates :name, :presence => true, :uniqueness => true, :length => { :minimum => 2 }
before_destroy :check_for_associated_articles
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def self.ransackable_attributes(auth_object = nil)
%w(id name)
end
def self.ransackable_associations(auth_object = nil)
%w(articles order_articles orders)
end
# Find a category that matches a category name; may return nil.
# TODO more intelligence like remembering earlier associations (global and/or per-supplier)
def self.find_match(category)
return if category.blank? || category.length < 3
c = nil
## exact match - not needed, will be returned by next query as well
# c ||= ArticleCategory.where(name: category).first
# case-insensitive substring match (take the closest match = shortest)
c = ArticleCategory.where('name LIKE ?', "%#{category}%") unless c && c.any?
# case-insensitive phrase present in category description
c = ArticleCategory.where('description LIKE ?', "%#{category}%").select { |s| s.description.match /(^|,)\s*#{category}\s*(,|$)/i } unless c && c.any?
# return closest match if there are multiple
c = c.sort_by { |s| s.name.length }.first if c.respond_to? :sort_by
c
end
protected
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# Deny deleting the category when there are associated articles.
def check_for_associated_articles
raise I18n.t('activerecord.errors.has_many_left', collection: Article.model_name.human) if articles.undeleted.exists?
end
end