DataMapper Mongo Adapter

• github.com/shanna/dm-mongo-adapter/tree/master

WARNING

This adapter is a work-in-progress, so stay tuned :)

TODO

Embedded Objects

I have no idea. I’d guess a DM::Relationship#has hack or custom DM::Types that behave like a table-less resource?

Associations

The documentation for Mongo is confusing so I’m not sure if DBRef’s are deprecated or not.

Query Performance

At the moment a single Javascript $where clause is built. Your indexes probably won’t be used. A mixture of Hash conditions plus a Javascript $where clause when required would be much better.

Dependencies

Ruby::

• dm-core ~> 0.10.2
• mongo ~> 0.16

Install

• Via git:

    git clone git://github.com/shanna/dm-mongo-adapter.git
    rake install
  

Synopsis

  DataMapper.setup(:default,
    :adapter  => 'mongo',
    :database => 'my_mongo_db',
  )

  # Define your DataMapper resource and start saving:
  class User
    include DataMapper::Resource
    property :id, DataMapper::Mongo::Types::ObjectID, :field => '_id', :key => true
    property :name, String
    property :age, Integer
  end

  # No need to (auto_)migrate!
  User.create(:name => 'Fred', :age => '25')

  # Conditions:
  users = User.all(:age.gte => 10, :limit => 20, :order => [:age.asc])

Contributing

Go nuts. Just send me a pull request (github or otherwise) when you are happy with your code.

Copyright

Copyright © 2009 "Shane Hanna". See LICENSE for details.