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Contents
module Uuids # Creates required `#uuids` attribute of the ActiveRecord model. module Base def self.included(klass) fail unless klass.ancestors.include? ActiveRecord::Base klass.has_many :uuids, uuids_params klass.before_create :add_default_uuid klass.before_destroy :prevent_destruction klass.validates :uuids, presence: true, on: :update end private # Parameters for uuid associations def self.uuids_params { class_name: "Uuids::Uuid", as: :record, validate: false } end # Creates the uuids by default preventing a record from being ureferrable def add_default_uuid uuids.present? || uuids.new end # Prevents destruction of a record before its uuids assigned to another one def prevent_destruction return true if uuids.blank? errors.add :base, :uuids_present false end end end
Version data entries
1 entries across 1 versions & 1 rubygems
Version | Path |
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uuids-0.2.0 | lib/uuids/base.rb |