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)
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