DataMapper and Sunspot Integration Spike

dm_sunspot.rb

# gem install datamapper dm-sqlite-adapter sunspot sunspot_rails activesupport

require 'rubygems'
require 'datamapper'
require 'sunspot'
require 'sunspot/rails'
require 'active_support/all'

DataMapper::Logger.new($stdout, :debug)
DataMapper.setup(:default, 'sqlite::memory:')

module Sunspot
  module DataMapper
    def self.included(base)
      base.class_eval do
        alias new_record? new?
      end

      base.extend Sunspot::Rails::Searchable::ActsAsMethods

      Sunspot::Adapters::DataAccessor.register(DataAccessor, base)
      Sunspot::Adapters::InstanceAdapter.register(InstanceAdapter, base)

      def base.before_save(*args, &block)
        before(:save, *args, &block)
      end

      def base.after_save(*args, &block)
        after(:save, *args, &block)
      end

      def base.after_destroy(*args, &block)
        after(:destroy, *args, &block)
      end
    end

    class InstanceAdapter < Sunspot::Adapters::InstanceAdapter
      def id
        @instance.id
      end
    end

    class DataAccessor < Sunspot::Adapters::DataAccessor
      def load(id)
        @clazz.get(id)
      end

      def load_all(ids)
        @clazz.all(:id => ids)
      end
    end
  end
end

class User
  include DataMapper::Resource
  include Sunspot::DataMapper

  property :id,   Serial
  property :name, String, :required => true, :unique => true

  searchable do
    string :name
  end
end

DataMapper.auto_migrate!

User.create(:name => 'John Doe')

puts '-' * 80

p User.all
p Sunspot.search(User).results

nice :)

I'm sure there are ways to get this to work without requiring activesupport or sunspot_rails. I was mostly just copying some Mongoid and MongoMapper examples I found, trying to see if I could get things to the point where the last two statements would return the same results. If that was the case, it probably also wouldn't be necessary to have those new_record? or before/after hook aliases either.

Thanks for the helpful example code! In case this helps you or anyone else, I've rolled this gist into a higher-level gem here: https://github.com/brainix/data_mapped