module ComfortableMexicanSofa::HasRevisions::InstanceMethods
Public Instance Methods
create_revision()
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Revision is created only if relevant data changed
# File lib/comfortable_mexican_sofa/extensions/has_revisions.rb, line 45 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
prepare_revision()
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Preparing revision data. A bit of a special thing to grab page blocks
# File lib/comfortable_mexican_sofa/extensions/has_revisions.rb, line 34 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
restore_from_revision(revision)
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Assigning whatever is found in revision data and attempting to save the object
# File lib/comfortable_mexican_sofa/extensions/has_revisions.rb, line 61 def restore_from_revision(revision) return unless revision.record == self update!(revision.data) end