class Label < ActiveRecord::Base has_many :labelings, dependent: :destroy has_many :issues, through: :labelings belongs_to :project validates :name, uniqueness: { scope: :project_id } validates :name, length: { in: 1..20 } validates :color, presence: true validates :color, format: { with: /\A([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})\z/, message: I18n.t('layout.issues.invalid_labels') } # attr_accessible :name, :color end