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class List < ActiveRecord::Base
belongs_to :board
belongs_to :label
enum list_type: { backlog: 0, label: 1, done: 2 }
validates :board, :list_type, presence: true
validates :label, :position, presence: true, if: :label?
validates :label_id, uniqueness: { scope: :board_id }, if: :label?
validates :position, numericality: { only_integer: true, greater_than_or_equal_to: 0 }, if: :label?
before_destroy :can_be_destroyed
scope :destroyable, -> { where(list_type: list_types[:label]) }
scope :movable, -> { where(list_type: list_types[:label]) }
def destroyable?
label?
end
def movable?
label?
end
def title
label? ? label.name : list_type.humanize
end
private
def can_be_destroyed
destroyable?
end
end
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