-
Type:
Task
-
Resolution: Done
-
Affects Version/s: None
-
Component/s: None
Given this class definitition (i know its not the easiest but beside this problem it works pretty fine):
class Parent include Mongoid::Document include Mongoid::Timestamps embeds_many :children, :class_name => '::Parent::Child' class Child include Mongoid::Document identity :type => String field :active, :type => Boolean, :default => true embedded_in :parent, :class_name => '::Parent' end end
I can append new Children to the Parent ONLY for not yet saved Parents:
p = Parent.new p.children << Parent::Child.new p.save
the following does not work:
p = Parent.last p.children << Parent::Child.new
and gives me this exception:
NoMethodError: undefined method `name' for nil:NilClass
from ..gems-path.../ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/whiny_nil.rb:48:in `method_missing'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/paths.rb:38:in `_position'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence/insert_embedded.rb:34:in `persist'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence/insert.rb:43:in `insert'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence/insert.rb:30:in `block (2 levels) in persist'
from ..gems-path.../ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/callbacks.rb:414:in `_run_create_callbacks'
from ..gems-path.../ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/callbacks.rb:94:in `run_callbacks'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence/insert.rb:29:in `block in persist'
from ..gems-path.../ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/callbacks.rb:414:in `_run_save_callbacks'
from ..gems-path.../ruby-1.9.2-p180/gems/activesupport-3.0.7/lib/active_support/callbacks.rb:94:in `run_callbacks'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence/insert.rb:28:in `persist'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence.rb:47:in `insert'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/persistence.rb:148:in `upsert'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/relations/many.rb:27:in `block in <<'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/relations/many.rb:24:in `each'
from ..gems-path.../ruby-1.9.2-p180/gems/mongoid-2.0.1/lib/mongoid/relations/many.rb:24:in `<<'
I already tried to figure out why this is happening but i dont see any relationship between the obvious new_record? in the _position method and metadata.name that actually causes the error