Method: LiveRecord::ChangesChannel#sync_record

Defined in:
app/channels/live_record/changes_channel.rb

#sync_record(data) ⇒ Object 



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# File 'app/channels/live_record/changes_channel.rb', line 34

def sync_record(data)
  params = data.symbolize_keys

  find_record_from_params(params) do |record|
    whitelisted_attributes = LiveRecord::BaseChannel::Helpers.whitelisted_attributes(record, current_user)

    if whitelisted_attributes.size > 0
      live_record_updates = nil

      if params[:stale_since].present?
        live_record_updates = LiveRecordUpdate.where(
          recordable_type: record.class.name,
          recordable_id: record.id
        ).where(
          'created_at >= ?', DateTime.parse(params[:stale_since]) - LiveRecord.configuration.sync_record_buffer_time
        )
      end

      # if stale_since is unknown, or there is a live_record_update that has happened while disconnected,
      # then we update the record in the client-side
      if params[:stale_since].blank? || live_record_updates.exists?
        message = { 'action' => 'update', 'attributes' => record.attributes }
        response = filtered_message(message, whitelisted_attributes)
        transmit response if response.present?
      end
    else
      respond_with_error(:forbidden)
      reject_subscription
    end
  end
end