Created
June 8, 2009 08:43
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require 'dm-core' | |
# logging if you want it | |
# DataObjects::Sqlite3.logger = DataObjects::Logger.new(STDOUT, 0) | |
# set up our classes | |
class Person | |
include DataMapper::Resource | |
# Change this property type to 'Serial' and this script works fine! | |
property :uid, String, :key => true, :default => Proc.new { |r, p| rand(10000).to_s } | |
has n, :people_things | |
has n, :things, :through => :people_things | |
end | |
class PeopleThing | |
include DataMapper::Resource | |
property :id, Serial | |
property :person_uid, String | |
property :thing_uid, Integer | |
property :relationship, String | |
belongs_to :person, :child_key => [:person_uid] | |
belongs_to :thing, :child_key => [:thing_uid] | |
end | |
class Thing | |
include DataMapper::Resource | |
property :uid, Serial | |
has n, :people_things | |
has n, :people, :through => :people_things | |
end | |
# create database and tables | |
DataMapper.setup(:default, 'sqlite3::memory:') | |
DataMapper.auto_migrate! | |
# Fill our database | |
thing = Thing.create | |
another_thing = Thing.create | |
person = Person.create | |
pt = PeopleThing.new(:relationship => "Something") | |
thing.people_things << pt | |
person.people_things << pt | |
pt.save | |
# the actual code that doesn't work | |
things = Thing.all | |
puts things[0] == thing # => true | |
# should output true | |
puts things[0].people[0] == thing.people[0] # => false | |
# should output 1 | |
puts things[0].people.length # => 0 |
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