33 lines
765 B
Ruby
33 lines
765 B
Ruby
# frozen_string_literal: true
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class Tip < ApplicationRecord
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include Creation
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has_many :exercise_tips
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has_many :exercises, through: :exercise_tips
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belongs_to :file_type, optional: true
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validates :file_type, presence: {if: :example?}
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validate :content?
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def content?
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unless [
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description?, example?
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].include?(true)
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errors.add :description, :at_least, attribute: Tip.human_attribute_name('example')
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end
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end
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def to_s
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if title?
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"#{Tip.model_name.human}: #{title} (#{id})"
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else
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"#{Tip.model_name.human} #{id}"
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end
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end
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def can_be_destroyed?
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# This tip can only be destroyed if it is no parent to any other exercise tip
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ExerciseTip.where(parent_exercise_tip: exercise_tips).none?
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end
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end
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