Created
October 2, 2008 17:52
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# Right now if you do this and run rake db:automigrate (I'm using postgresql) | |
# it will generate a table called authors_books with one column called entity_id | |
# instead of adding 2 columns to the table (book_id, author_id). | |
# | |
# I think that means it is getting and using the parent model from the STI hierarchy | |
# This was an attempt to patch it up, it's working but it's breaking one spec | |
# http://github.com/lobo-tuerto/dm-core/commit/c2103bc1789c05685fb111194635fa13f5707ea9 | |
class Entity | |
include DataMapper::Resource | |
property :id, Serial | |
property :name, String | |
property :type, Discriminator | |
end | |
class Book < Entity | |
property :title, String | |
has n, :authors, :through => Resource | |
end | |
class Author < Entity | |
property :name, String | |
has n, :books, :through => Resource | |
end | |
#This is the result | |
CREATE TABLE authors_books | |
( | |
entity_id integer NOT NULL, | |
CONSTRAINT authors_books_pkey PRIMARY KEY (entity_id) | |
) |
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