Module: GoogleSpreadsheets::Enhanced::Synchronizer

Defined in:
lib/google_spreadsheets/enhanced/synchronizer.rb

Instance Method Summary collapse

Instance Method Details

#sync_with(rows_name, options) ⇒ Object

Example

class User < ActiveRecord::Base extend GoogleSpreadsheets::Enhanced::Synchronizer sync_with :user_rows, spreadsheet_id: 'xxxx', worksheet_title: 'users' after_commit :sync_user_row



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# File 'lib/google_spreadsheets/enhanced/synchronizer.rb', line 11

def sync_with(rows_name, options)
  options.assert_valid_keys(:spreadsheet_id, :worksheet_title, :class_name)
  options[:worksheet_title] ||= rows_name.to_s
  spreadsheet_class_name = LinkRelations.class_name_mappings['http://schemas.google.com/spreadsheets/2006#spreadsheet'].classify
  define_singleton_method(rows_name) do
    @worksheet ||= spreadsheet_class_name.constantize
                     .find(options[:spreadsheet_id])
                     .worksheets
                     .find_by!(title: options[:worksheet_title])
    @worksheet.rows
  end

  # import all
  define_singleton_method("sync_with_#{rows_name}") do
    rows = send(rows_name)
    rows.each do |row|
      record = self.find_or_initialize_by(id: row.id)
      row.aliased_attributes.each do |attr|
        record.send("#{attr}=", row.send(attr))
      end
      record.instance_variable_set(:@_skip_outbound_sync, true)
      record.save
      record.remove_instance_variable(:@_skip_outbound_sync)
    end
  end

  # export one
  define_method("sync_#{rows_name.to_s.singularize}") do
    return if @_skip_outbound_sync
    row = self.class.send(rows_name).find(self.id)
    if destroyed?
      row.destroy
    else
      # TODO: separate by AttributeAssignment
      self.attributes_before_type_cast.each do |attr, value|
        row.send("#{attr}=", value)
      end
      row.save
    end
  end
end