广告语：你觉得Rails现在的ActiveRecord还不够活跃、还不够DSL吗？想让它更有抱负吗？那么你需要Ambition，马上装上这颗“野心”，让数据来的更猛烈些。
使用了本产品，你将可以：
User.first
"SELECT * FROM users LIMIT 1"
User.select { |m| m.name != 'macgyver' }
"SELECT * FROM users WHERE users.`name` <> 'macgyver'"
User.select { |u| u.email =~ /chris/ }.first
"SELECT * FROM users WHERE (users.`email` REGEXP 'chris') LIMIT 1"
User.select { |u| u.karma > 20 }.sort_by(&:karma).first(5)
"SELECT * FROM users WHERE (users.`karma` > 20)
ORDER BY users.karma LIMIT 5"
User.select { |u| u.email =~ 'ch%' }.size
"SELECT count(*) AS count_all FROM users
WHERE (users.`email` LIKE 'ch%')"
User.sort_by { |u| [ u.email, -u.created_at ] }
"SELECT * FROM users ORDER BY users.email, users.created_at DESC"
User.detect { |u| u.email =~ 'chris%' && u.profile.blog == 'Err' }
"SELECT users.`id` AS t0_r0 ... FROM users
LEFT OUTER JOIN profiles ON profiles.user_id = users.id
WHERE ((users.`email` LIKE 'chris%' AND profiles.blog = 'Err'))
LIMIT 1"
ORM？ROM？！
>> user = User.select { |u| u.name == 'Dio' }
=> (Query object: call #to_sql or #to_hash to inspect...)
>> user.to_sql
=> "SELECT * FROM users WHERE users.`name` = 'Dio'"
还担心从C中取到的数据而在V中根本没有用上而觉得浪费感情吗？
class BandsController < ApplicationController
def index
@bands = Band.sort_by(&:name)
end
end
现在 @bands 不再是一个数据集合在战斗，只有当真正访问到里面的数据条目时它才会召唤db engine附身，如：
Rocktastic Bands
<% @bands.each do |band| %>
- <%= band %>
<% end %>
