29 lines
821 B
Ruby
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
|