model relations for a card game

relations

# game.rb
has_many :hands
has_and_belongs_to_many :users
embeds_many :spaces

# hand.rb
belongs_to :user
belongs_to :game
has_many :cards

# user.rb
has_and_belongs_to_many :games
has_many :hands
has_many :cards

# space.rb
embedded_in :game
has_one :card

# card.rb
belongs_to :space
belongs_to :hand
belongs_to :user