Files
codeocean/app/models/tip.rb
2020-10-14 14:34:26 +02:00

29 lines
821 B
Ruby

# frozen_string_literal: true
class Tip < ApplicationRecord
include Creation
has_many :exercise_tips
has_many :exercises, through: :exercise_tips
belongs_to :file_type, optional: true
validates_presence_of :file_type, if: :example?
validate :content?
def content?
errors.add :description, I18n.t('activerecord.errors.messages.at_least', attribute: I18n.t('activerecord.attributes.tip.example')) unless [description?, example?].include?(true)
end
def to_s
if title?
"#{I18n.t('activerecord.models.tip.one')}: #{title} (#{id})"
else
"#{I18n.t('activerecord.models.tip.one')} #{id}"
end
end
def can_be_destroyed?
# This tip can only be destroyed if it is no parent to any other exercise tip
ExerciseTip.where(parent_exercise_tip: exercise_tips).none?
end
end