gistfile1.rb

require 'rubygems'
require 'mongo'
require 'pp'

host = ENV['MONGO_RUBY_DRIVER_HOST'] || 'localhost'
port = ENV['MONGO_RUBY_DRIVER_PORT'] || XGen::Mongo::Driver::Mongo::DEFAULT_PORT

puts "Connecting to #{host}:#{port}"
db = XGen::Mongo::Driver::Mongo.new(host, port).db('blog_test')
articles = db.collection('articles')
articles.clear()

article = { :title => "Mongo with Ruby is Fun!!", :content => "hello mongo programmers", 
            :url => "/articles/mongo_ruby", :tags => ["ruby"] }
    
articles << article
# next line shows our inserted Hash contains the new _id
puts "Article #{article[:_id]} inserted"
puts "Count of #{db.name}:#{articles.name} => #{articles.count}"
puts "Articles:"
articles.find().each { |doc| pp doc }
puts
puts "use $push to add to tags"
articles.update({"_id" => article[:_id]}, {"$push" => {"tags" => "mongo"}})
puts "Articles:"
articles.find().each { |doc| pp doc }
puts
puts "use $pushAll to add to tags"
articles.update({"_id" => article[:_id]}, {"$pushAll" => {"tags" => ["merb", "programming"]}})
puts "Articles:"
articles.find().each { |doc| pp doc }
puts
puts "use $pull to remove from tags"
articles.update({"_id" => article[:_id]}, {"$pull" => {"tags" => "programming"}})
puts "Articles:"
articles.find().each { |doc| pp doc }
puts
puts "use $pullAll to remove from tags"
articles.update({"_id" => article[:_id]}, {"$pullAll" => {"tags" => ["merb", "ruby"]}})
puts "Articles:"
articles.find().each { |doc| pp doc }