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Contents
# frozen_string_literal: true
module ComfortableMexicanSofa::HasRevisions
def self.included(base)
base.send :extend, ClassMethods
end
module ClassMethods
def cms_has_revisions_for(*fields)
include ComfortableMexicanSofa::HasRevisions::InstanceMethods
attr_accessor :revision_data
has_many :revisions,
as: :record,
dependent: :destroy,
class_name: "Comfy::Cms::Revision"
before_save :prepare_revision
after_save :create_revision
define_method(:revision_fields) do
fields.collect(&:to_s)
end
end
end
module InstanceMethods
# Preparing revision data. A bit of a special thing to grab page blocks
def prepare_revision
return if new_record?
if (respond_to?(:fragments_attributes_changed) && fragments_attributes_changed) ||
!(changed & revision_fields).empty?
self.revision_data = revision_fields.each_with_object({}) do |field, c|
c[field] = send("#{field}_was")
end
end
end
# Revision is created only if relevant data changed
def create_revision
return unless revision_data
limit = ComfortableMexicanSofa.config.revisions_limit.to_i
# creating revision
if limit != 0
revisions.create!(data: revision_data)
end
# blowing away old revisions
ids = [0] + revisions.order(created_at: :desc).limit(limit).pluck(:id)
revisions.where("id NOT IN (?)", ids).destroy_all
end
# Assigning whatever is found in revision data and attempting to save the object
def restore_from_revision(revision)
return unless revision.record == self
update!(revision.data)
end
end
end
ActiveSupport.on_load :active_record do
include ComfortableMexicanSofa::HasRevisions
end
Version data entries
12 entries across 12 versions & 6 rubygems