RailsでMongoDBを利用する

1. Rails with MongoDB
Kosuke Matsuda

3. • MongoDB
• Mac MongoDB
• Ruby MongoDB
• Rails MongoDB

4. MongoDB
MongoDB C++
http://ja.wikipedia.org/wiki/MongoDB

5. MongoDB
•
•
•
•
•
http://www.mongodb.org/display/DOCSJP/Home

6. •
RDB
•
RDB
•
RDB

7. Mac MongoDB
•
http://www.mongodb.org/display/DOCS/Downloads
• MacPorts
$ sudo port install mongodb

8. MongoDB
$ sudo mkdir -p /opt/local/var/db/mongodb
$ sudo mkdir -p /opt/local/var/log/
$ sudo touch /opt/local/var/log/mongodb.log
$ /opt/local/bin/mongod --dbpath /opt/local/$ var/db/
mongodb --logpath /opt/local/var/log/mongodb.log
# /data/db/
# Mac http://github.com/AndreiRailean/MongoDB-
OSX-Launchctl

9. Ruby MongoDB
• mongo-ruby-driver
• Official Ruby driver for MongoDB
• http://github.com/mongodb/mongo-ruby-driver

10. Set up
$ sudo gem install mongo
# mongo gem BSON gem
$ sudo gem install bson
# C
$ sudo gem install bson_ext

11. Tutorial
require "rubygems"
require "mongo"
db = Mongo::Connection.new.db('test')
coll = db.collection("sample")
doc = {
'name' => 'MongoDB',
'type' => 'database',
'info' => {
'language' => 'ruby',
'driver' => 'ruby_driver'
}
}
coll.insert(doc)
mydoc = coll.find_one()
puts mydoc.inspect
# {"_id"=>BSON::ObjectID('4c2733f4a27a137051000001'), "name"=>"MongoDB",
"info"=>{"language"=>"ruby", "driver"=>"ruby_driver"}, "type"=>"database"}

12. Rails MongDB
• O/R Mapper
• MongoMapper
• http://mongomapper.com/
• Mongoid
• http://mongoid.org/

13. MongoDB
• ActiveRecord
• Rails Model
• SQL-like
•
http://blog.madoro.org/mn/54

14. Set up
• Configuration for Database
$ cat config/initializers/database.rb
MongoMapper.database = "mongo_sample-#{Rails.env}"
if defined?(PhusionPassenger)
PhusionPassenger.on_event(:starting_worker_process) do |forked|
MongoMapper.connection.connect_to_master if forked
end
end
$ echo "# Using MongoDB" > config/database.yml

15. Set up
• Environment
# config/environment.rb
config.frameworks -= [ :active_record ]
config.gem "mongo_mapper"

16. Demo

17. • $ script/generate model ‘ModelName’

18. •
• Rails Rails3
• MongoDB NoSQL
• RDB Rails

20. any questions?