metasoarous/param_assign_example.rb

## param_assign_example.rb
params = {:thickness => "2 inches",
  :comments_attributes => [{:text => "the silly string"},
                           {:text => "the silly putty"}]}
Layer.new(params)
#=> ActiveRecord::UnknownAttributeError: unknown attribute: comments_attibutes
	params = {:thickness => "2 inches",
	:comments_attributes => [{:text => "the silly string"},
	{:text => "the silly putty"}]}
	Layer.new(params)
	#=> ActiveRecord::UnknownAttributeError: unknown attribute: comments_attibutes