datamapper - many-to-many parent child relationship
I started playing around with datamapper to see if I could model an many to many parent/child relationship (self-referential habtm?) for an upcoming project. The plan was to use sproutcore for the gui (once I figured it out!), and merb as a webservice that it interacts with.
Justin gave me a kickstart with datamapper, and I eventually came up with:
#Person.rb
class Person
include DataMapper::Resource
property :id, Integer, :serial => true
has n, :relationships
has n, :parents, :through => :relationships, :class_name => 'Person'
has n, :children, :through => :relationships, :class_name => 'Person'
# parent = Person.create()
# child = Person.create()
# relationship = Relationship.new(:parent => parent)
# child.relationships << relationship
# child.save
end
#Relationship.rb
class Relationship
include DataMapper::Resource
property :id, Integer, :serial => true
belongs_to :person
belongs_to :parent, :class_name => 'Person'
belongs_to :child, :class_name => 'Person'
end
I’ll eventually write some spec’s for it.
tags: datamapper merb
yo. funny thread..
tophm… amazing post
topyou have a fast hosting
topyeah… love this thread :) g
top? ????? ??????: ?????????!
[url=http://bogachi.co.cc/kemerovo2/?p=11]???? ???? ? ????[/url] ??? ????????????? ? ???????????? [url=http://bogachi.co.cc/dzerzhinsk6/?p=37]????????????? ? ?????? ?????????[/url] ????? ?? ??????? ????? [url=http://bogachi.co.cc/ryazan5/?p=35]? ?????? ?????????? ? ???????????[/url] - ?????? ???????????? ? ??????? ?????? [url=http://bogachi.co.cc/rubcovsk1/?p=19]??????? ? ????????? ? ??????? ?????? ????????????[/url]: ????? ? ????????? ?? ??????????? [url=http://bogachi.co.cc/stavropol9/?p=22]??????? ?? ???? ???? ??????????[/url]: ? ?????????? ???? ???????????? ? ?????? [url=http://bogachi.co.cc/kolomna2/?p=33]??? ????????????? ? ????????[/url]: ?????????? ??? ????? [url=http://bogachi.co.cc/rostov-na-donu5/?p=43]??????? ??????? ?????? ????? ?????[/url] - ???????????? ? ????????? ? ??????-??-???? [url=http://bogachi.co.cc/vologda2/?p=29]????????????? ? ?????? ?? ?????[/url]: ??????? ???????????? ? ?????????? ???????? [url=http://bogachi.co.cc/nalchik4/?p=13]???????????? ? ???????? ? ?????? ?????????[/url] ??? ????????????? ? ?????? [url=http://bogachi.co.cc/nalchik4/?p=7]??????? ??? ???????????? ? ????????[/url] ??????? ???????????? ?? ????????? [url=http://bogachi.co.cc/berezniki9/?p=46]????????? ???? ?????????? ???????[/url]: ???????????? ? ??????? ?????? ? ?????????? [url=http://bogachi.co.cc/dzerzhinsk6/?p=40]???????????? ?? ????????? ?????????[/url] - ???????????? ? ???????? ??? ?????? [url=http://bogachi.co.cc/stavropol9/?p=40]???????????? ??? ?????? ? ??????[/url]: ???????? ??????? ?????? ????????????? [url=http://bogachi.co.cc/saransk4/?p=17]??? ????????????? ? ??????? ?????[/url]: ???????????? ? ???????? ? ???????? ???????? [url=http://bogachi.co.cc/saransk4/?p=34]??????? ?????????? ? ?????????[/url] - ???? ?????????? ? ???????????? [url=http://bogachi.co.cc/dzerzhinsk6/?p=16]???????? ??????? ????????????? ??? ????? ? ??????????[/url]: ????????? ???? ?????????? ??????? [url=http://bogachi.co.cc/novocheboksarsk8/?p=27]?????????????? ?????????? ? ???????????[/url] - ??????? ???????????? ? ???????? ?????????????? [url=http://bogachi.co.cc/samara3/?p=40]?????? ????????????? ? ???????????[/url] - ?????????? ? ?????? ? ??????????? [url=http://bogachi.co.cc/dzerzhinsk6/?p=34]?????????? ? ???????????[/url]: ???????????? ? ??????? ??????
top? ?????: ?????????????..
[url=http://gaygorod.co.cc/nazran3/?p=17]?????????? ??? ???????[/url] - ??? ?????? ?????????? [url=http://gaygorod.co.cc/novotroick1/?p=28]??? ?????????? ?????????? ? ???????????[/url]: ?????????? ??? ?????????? ?? ?????? [url=http://gaygorod.co.cc/bryansk2/?p=28]? ??????? ??? ??????????[/url] - ?????????? ??? ???? ?? ??????? ?????? [url=http://gaygorod.co.cc/vladivostok8/?p=22]??? ?????????? gaygay[/url]: ??????????? ????? ??? ?????????? [url=http://gaygorod.co.cc/vladivostok8/?p=29]??? ?????????? 16 ???[/url] - ??? ?????????? [url=http://gaygorod.co.cc/belgorod8/?p=7]?????????? ???? ?? ??? ??????[/url] - ????? ????? ??? ????????? [url=http://gaygorod.co.cc/noyabrsk7/?p=15]?????????? ?????[/url] ??? ?????????? date [url=http://gaygorod.co.cc/bryansk2/?p=22]?????????? ??? ????[/url] ??? ?????????? ????? ???? [url=http://gaygorod.co.cc/taganrog6/?p=16]?????? ? ?????????[/url] ????? ?????????? ??? ?????????? [url=http://gaygorod.co.cc/ivanovo8/?p=13]??? ??????? ??????????[/url] - ??? ?????? ??? ?????????? ? ??????? [url=http://gaygorod.co.cc/novocherkassk6/?p=14]????????????? ?????????? ??? ????[/url]: ???? ??? ???? [url=http://gaygorod.co.cc/syzran3/?p=5]??? ?????????? ?????[/url] ??? ???? ????????? ??????? [url=http://gaygorod.co.cc/ulyanovsk9/?p=6]???? ?????????? ????[/url] ?????????? ???? ?? ??? ?????? [url=http://gaygorod.co.cc/taganrog6/?p=11]???????? ??? ????[/url] ??? ?????????? ??? ????? [url=http://gaygorod.co.cc/jelektrostal3/?p=24]?????????? ????? ??? ????????? ????????????[/url] - ??? ?????????? ?? 40 [url=http://gaygorod.co.cc/novoshahtinsk2/?p=23]??? ?????????? gaygay[/url]: ??? ?????????? ? ??????????
top