shanna / dm-mongo-adapter

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- v0.1.0

Mongo DataMapper Adapter — Read more

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Updated documentation now I have an ObjectID type.

shanna (author)

Mon Jun 29 01:10:13 -0700 2009

commit 834649fac4269fb83801e728599d28d80c8bba6b
tree 56206e01537494042f70d05e2826b41a92023dab
parent deb2c9ae2e8e8b6f57e6c906c3578df293eae952

dm-mongo-adapter /

name	age	history message
.gitignore	Sun Jun 21 18:41:41 -0700 2009	Initial commit to dm-mongo-adapter. [shanna]
LICENSE	Sun Jun 21 18:41:41 -0700 2009	Initial commit to dm-mongo-adapter. [shanna]
README.rdoc	Mon Jun 29 01:10:13 -0700 2009	Updated documentation now I have an ObjectID type. [shanna]
Rakefile	Thu Jun 25 07:29:32 -0700 2009	Gem is only on github. [shanna]
VERSION.yml	Tue Jun 23 21:45:14 -0700 2009	Version bump to 0.1.0 [shanna]
dm-mongo-adapter.gemspec	Thu Jun 25 07:29:57 -0700 2009	Regenerated gemspec for version 0.1.0 [shanna]
lib/	Sun Jun 28 21:26:51 -0700 2009	I gave up on javascript $where. The ObjectID ma... [shanna]
spec/	Sun Jun 28 00:35:06 -0700 2009	Still bugs in $where clause by MongoID objects. [shanna]

README.rdoc

DataMapper Mongo Adapter

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

WARNING

This adapter is shit, I’m just trying to make a start. Steal what you can or write something better :)

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 ~> 0.10.0
mongo ~> 0.8

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.