hi, i got the following error while update records, Please help me why i got this error and also i attach my sample code in bottom of error message.
/usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/associations/ one_to_many.rb:302:in `save_resource': undefined method `attach_parent' for #<DataMapper::Associations::RelationshipChain: 0xb7751fa4> (NoMethodError) from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/relationship.rb:172:in `with_repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ support/kernel.rb:6:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core.rb: 181:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ repository.rb:44:in `scope' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core.rb: 181:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ support/kernel.rb:6:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/relationship.rb:172:in `with_repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:298:in `save_resource' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:210:in `save' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ lazy_array.rb:452:in `each' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ lazy_array.rb:452:in `each' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:309:in `send' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:309:in `method_missing' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:210:in `save' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:301:in `hookable__save_nan_before_advised' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:301:in `each' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:301:in `hookable__save_nan_before_advised' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ hook.rb:299:in `save' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ hook.rb:297:in `catch' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ hook.rb:297:in `save' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:303:in `save_resource' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/relationship.rb:172:in `with_repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ support/kernel.rb:6:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core.rb: 181:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ repository.rb:44:in `scope' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core.rb: 181:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ support/kernel.rb:6:in `repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/relationship.rb:172:in `with_repository' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:298:in `save_resource' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:210:in `save' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ lazy_array.rb:452:in `each' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ lazy_array.rb:452:in `each' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:309:in `send' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:309:in `method_missing' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ associations/one_to_many.rb:210:in `save' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:301:in `hookable__save_nan_before_advised' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:301:in `each' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:301:in `hookable__save_nan_before_advised' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ hook.rb:299:in `save' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ hook.rb:297:in `catch' from /usr/lib/ruby/gems/1.8/gems/extlib-0.9.13/lib/extlib/ hook.rb:297:in `save' from /usr/lib/ruby/gems/1.8/gems/dm-core-0.9.11/lib/dm-core/ resource.rb:538:in `update_attributes' from sample_datamapper.rb:75 my example code is require 'rubygems' require 'dm-core' DataMapper.setup( :default, "sqlite3:///home/abs1/sample2/test1.db" ) class Commit include DataMapper::Resource property :id, Integer, :serial => true property :identifier, String, :nullable => false property :message, String, :length => 255 property :author, String, :length => 255 property :committed_at, DateTime property :created_at, DateTime property :updated_at, DateTime has 1, :build, :class_name => "Build", :order => [:created_at.desc] end class Build include DataMapper::Resource property :id, Integer, :serial => true property :output, Text, :default => "", :lazy => false property :successful, Boolean, :default => false property :commit_id, Integer, :nullable => false property :created_at, DateTime property :updated_at, DateTime property :started_at, DateTime property :completed_at, DateTime has n, :buildsteps, :class_name => "BuildStep" has n, :steps, :through => :buildsteps, :mutable => true end class Step include DataMapper::Resource has n, :buildsteps, :class_name => "BuildStep" has n, :builds, :through => :buildsteps, :mutable => true property :id, Integer, :serial => true property :name, String property :dsp_name, String property :dsp_order, Integer property :created_at, DateTime property :updated_at, DateTime end class BuildStep include DataMapper::Resource belongs_to :build, :class_name => "Build", :child_key => [:build_id] belongs_to :step, :class_name => "Step", :child_key => [:step_id] property :id, Integer, :serial => true property :started_at, DateTime property :completed_at, DateTime property :output, Text property :successful, Boolean property :created_at, DateTime property :updated_at, DateTime end DataMapper.auto_migrate! build = Build.new(:commit_id => 2, :output => "rake aboted" ) commit = Commit.create(:identifier => '0782', :author => 'sankar', :message => "rake file added") commit.update_attributes(:build => build) build = commit.build Step.create(:name => 'rake unit') Step.create(:name => 'rake integration') Step.create(:name => 'rake features') Step.all.each { |steps| BuildStep.create(:step => steps, :build => build) } build.steps commit.update_attributes(:committed_at => Time.now) -- You received this message because you are subscribed to the Google Groups "DataMapper" group. 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