I get this error "WARNING: Can't mass-assign protected attributes: races_attributes" , when following this http://railscasts.com/episodes/196-nested-model-form-part-1 on rails 3.
Where Races are a component of Events. This is my models/race.rb:
class Race < ActiveRecord::Base
belongs_to :event
attr_accessible :name, :unit
end
This is my models/event.rb:
class Event < ActiveRecord::Base
has_many :races, :dependent => :destroy
accepts_nested_attributes_for :races
attr_accessible :name, :date, :description, :location_name, :address_one, :address_two, :city, :state, :zip, :active, :races_attributes
end
Any Ideas?
Shorter than using attr_accessible
, safer than using whitelist_attributes
: attr_protected
Just indicate the protected attributes, and Rails will infer that all others can be mass-assigned:
class MyClass < ActiveRecord::Base
attr_protected :id
end
(I always have way more attributes that I want mass-assigned than the ones I want protected.)