app/models/section.rb


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class Section < ApplicationRecord
  belongs_to :category
  has_one :taxonomy, through: :category
  has_many :classifications
  has_many :resources, through: :classifications

  acts_as_list column: :rank, scope: :category

  validates :name,
            uniqueness: { scope: :category_id },
            length: { in: 3..64 }
end