label_priority.rb 291 Bytes
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class LabelPriority < ActiveRecord::Base
  belongs_to :project
  belongs_to :label

  validates :project, :label, :priority, presence: true
  validates :label_id, uniqueness: { scope: :project_id }
  validates :priority, numericality: { only_integer: true, greater_than_or_equal_to: 0 }
end