On Wednesday 29 April 2009 17.44:03 fffact wrote:
> hi all, i'm new to datamapper and i can't figure out how associations
> naming works.
> that sadly doesn't work. instead it yields this error:
>
> ArgumentError: +options[:links]+ entry nil not supported
>
> which i find not very informative.
>
> would you please provide some insight?
> thanks
require 'rubygems'
require 'dm-core'
DataMapper.setup(:default, 'sqlite3::memory:')
class Author
include DataMapper::Resource
property :id, Serial
property :name, String
has n, :foobar,
:through => Resource,
:class_name => "Book",
:child_key => [:book_id]
end
class Book
include DataMapper::Resource
property :id, Serial
property :name, String
has n, :authors,
:through => Resource,
:class_name => "Author",
:child_key => [:author_id]
end
DataMapper::auto_migrate!
#that works fine, so that i can run this:
author = Author.create(:name => 'john')
book = Book.create(:name => 'cooffe')
book1 = Book.create(:name => 'milk')
author.foobar << book
author.foobar << book1
author.save
book.save
book1.save
author.foobar.each { |e| puts e.name }
Seems to work fine here...
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