require 'much-plugin'

require 'mr/record'

module MR; end
module MR::JsonField

  module Record
    include MuchPlugin

    plugin_included do
      include MR::Record
      include InstanceMethods

      before_save :json_field_sync_all_json_fields_on_save
    end

    module InstanceMethods

      private

      # this makes it so changes that are done to the JSON object are persisted
      # to the DB without having to re-write the entire field, for example if
      # the json field is a hash then a change to an individual key's value
      # needs to get re-encoded and stored in the source field, since the json
      # field writer wasn't used it won't get encoded, this callback fixes the
      # issue by ensuring all json fields get synced before we save the record
      def json_field_sync_all_json_fields_on_save
        self.model.class.json_field_accessors.each do |field_name|
          self.model.send("#{field_name}=", self.model.send(field_name))
        end
      end

    end

  end

end