Can't mass-assign protected attributes

ruby-on-rails nested-attributes mass-assignment

Have a look here and learn :)

Edit:

Having accepts_nested_attributes_forin User model enables you to send the data to the Address model.

Then, in the Address model, you have to set the requested attr_accessible

ruby-on-rails nested-attributes mass-assignment

Inside of SpecificModel (appfolder/app/model/specific_model.rb)

Try using

attr_accessible :addresses_attributes, :another_attribute_to_make_mass_assignable, :another_attribute, etc.

ruby-on-rails nested-attributes mass-assignment

Nowadays (April 2013) you should start to use https://github.com/rails/strong_parameters

CodeHunter