trek

from routes import *
from routes.util import url_for

m = Mapper()
m.resource('blog', 'blogs')

m.create_regs(['blogs'])

url_for('blog', id=2) # outputs '/blogs/2'
m.match('/blogs/2')   # no match

trek

def show
  @note = Note.find(:where => 'id = 1')
rescue NotFound
  redirect_to 'not_found', :status => 404
rescue NoDatabase
  logger.error('the db died again, shit')
  redirect_to 'apology', :status => 500
end

trek

class Economy
  def slowing?
   self.value.today < self.value.yesterday
  end
 
  def slow_by(amount)
    self.value -= amount
  end
end

trek

if foreigner = terrorist
  imprison(foreigner)
else
  release(foreigner)
end

trek

def show
  @note = Note.find(:where => 'id = 1')
rescue NotFound
  redirect_to 'not_found', :status => 404
rescue NoDatabase
  logger.error('the db died again, shit')
  redirect_to 'apology', :status => 500
end

trek

class Foo(object):
  def __init__(self,arg):
    """docstring for __init__"""
    self.arg = arg
    
  def dec(fn):
    def wrapper(*args):
      # args[0] is self. Lame
      args[0].arg = 'not what you thought, huh?'
      return fn(*args)

trek

class Thingie
  attr_accessor :element
  def initialize(element)
    self.element = Element.new(element)
    
    # with a block
    self.element.respond_to :click do
      self.element.hide
      ... other stuff ...
    end

trek

class PhotoBox
  attr_accessor :element, :images
  def initialize(element)
    # associate an element with this object
    self.element = Element.new(element)
    
    # give it a class
    self.element.add_class('active')
    
    # find subelemts and store them

trek

Customer < ActiveRecord::Base
  before_destroy :log_deletion, :email_admin
  
  private
    def log_deletion
     logger.info("customer id:#{self.id} was just deleted")
    end
    
    def email_admin
      ...

trek

class Conference
  has_many :attendees, :class_name => 'Person', :through => :attendance
  
  def Conference.next_upcoming
    self.find!(:first, :conditions => ['starting_at > ? and visibile = ?' Time.now, true])
  rescue RecordNotFound
    self.most_recent
  end
  
  def most_recent