gistfile1.rb

#!/opt/local/bin/ruby

require 'rubygems'
gem 'datamapper'
require 'datamapper'


DataMapper::Logger.new(STDOUT, :debug) # :off, :fatal, :error, :warn, :info, :debug
DataMapper.setup(:default, 'mysql://root:mXtHWdZsZuqh@localhost/dm_core_test' )


class Post
  include DataMapper::Resource
 
  # You can specify :serial (auto-incrementing, also sets :key to true):
  property :id,         Integer, :serial => true
  # # ...or the Serial custom-type which is functionally identical to the above:
  # property :id,         Serial
  # # ...or pass a :key option for a user-set key like the name of a user:
  property :name,       String, :key => true
  #  
  # property :title,      String
  # property :body,       Text
  # property :created_at, DateTime
  belongs_to :category
  
end

class Category
  include DataMapper::Resource
  property :id,         Serial
  property :name,       String
  has n, :posts
  
end


DataMapper.auto_migrate!

category = Category.create(:name => "some awesome thing")
Post.create(:name => "foobar", :category => category)

puts "hi there, i'm done!!"

puts "post count for category #{category.posts.aggregate(:all.count, :name.count)}"