mongo_main03.rb

# encoding: utf-8

# File Name: mongo_main03.rb
# Create Day is 2015/05/27
# Last Update Day is 2015/05/27

# Require List
require 'mongo'

puts "MongoDB test!!"

puts "DB接続"
db = Mongo::Client.new(["127.0.0.1:27017"], :database => 'sinatra_bbs')
collection = db[:comments]

# CRUD操作例
# 作成(C)
puts "ドキュメント挿入(一つ)"
puts collection.insert_one({:name => "darui", :title => "blogger", :comment => "darui"})

# 取得(R)
# :nameが"darui"を検索条件に指定
doc_array = Array.new
puts "ドキュメント取得"
collection.find(:name => "darui").each do |doc|
	doc_array.push(doc)
	puts doc
end

# BSONドキュメントの配列の内容を表示
doc_array.each do |doc|
	puts "name = " + doc[:name]
	puts "title = " + doc[:title]
	puts "comment = " + doc[:comment]
end

# 更新(U)
# 更新修飾子($～)は以下を参考にすると良い。
# URL: http://api.mongodb.org/wiki/current/Updating.html
puts "ドキュメント更新(複数)"
collection.find(:name => "darui").update_many("$set" => {:comment => "darui@apprentice"})
collection.find(:name => "darui").each do |doc|
	puts doc
end

# 削除(D)
puts "ドキュメント削除(複数)"
collection.find(:name => "darui").delete_many
collection.find(:name => "darui").each do |doc|
	puts doc
end