dreoliv / rom

Ruby Object Mapper

Ruby Object Mapper

ROM is an experimental ruby ORM.

Status

Project is being rebuilt from scratch. Watch this space.

Synopsis

require 'rom'
require 'rom/adapter/sequel'

rom = ROM.setup(sqlite: "sqlite::memory")

rom.sqlite.connection.run(
  <<-SQL
  CREATE TABLE users (
    id INTEGER PRIMARY KEY AUTOINCREMENT,
    name STRING,
    age INTEGER
  )
  SQL
)

rom.relations do
  register(:users) do

    def by_name(name)
      where(name: name)
    end

    def adults
      where { age >= 18 }
    end

  end
end

rom.mappers do
  define(:users) do
    model(name: 'User')
  end
end

# accessing registered relations
users = rom.relations.users

users.insert(name: "Joe", age: 17)
users.insert(name: "Jane", age: 18)

puts users.by_name("Jane").adults.to_a.inspect
# => [{:id=>2, :name=>"Jane", :age=>18}]

# reading relations using defined mappers
puts rom.read(:users).by_name("Jane").adults.to_a.inspect
# => [#<User:0x007fdba161cc48 @id=2, @name="Jane", @age=18>]

ROADMAP

Here's a top-level TODO:

• Add redis adapter (just to prove that stuff works with different adapters)
• Add a couple of RA operations (there's just Join now)
• Release 0.3.0.alpha \o/

Please refer to issues for details

Community

• 
• Ruby Object Mapper mailing list

License

See LICENSE file.