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class Consumer include DataMapper::Resource property :id, Integer, :serial => true property :consumer_key, String, :length => 50, :index => true property :request_count, Integer, :default => 0 # Roles has n, :rolifications has n, :roles => :rolifications end c = Consumer.first c.roles #=> [#<Role name="Read-Only" id=2>, #<Role name="Developer" id=3>] c.parent_associations.first => [#<Role name="Read-Only" id=2>, #<Role name="Developer" id=3>] c.parent_associations.first.instance_variable_get("@dirty_children") => nil c.update_attributes :request_count => 1 # DataMapper::Associations::ImmutableAssociationError: You can not modify this assocation # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/associations/one_to_many.rb:151:in `ensure_mutable' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/associations/one_to_many.rb:189:in `save_resources' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/associations/one_to_many.rb:120:in `save' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/repository.rb:130:in `save' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/repository.rb:130:in `each' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/repository.rb:130:in `save' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/resource.rb:484:in `update' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/resource.rb:268:in `save' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-validations-0.9.1/lib/dm-validations.rb:35:in `save' # from /webroot/janus_qa/releases/20080611034924/gems/gems/dm-core-0.9.1/lib/dm-core/resource.rb:460:in `update_attributes' # from (irb):10

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