ActiveAdmin with has_many problem; undefined method 'new_record?'

Question

I\'m trying to customise a ActiveAdmin form for a Recipe model that has a has_many relationship with Step.

class Recipe < ActiveRecord::Base
  has_many :s         


        

Answer 1

go to your Recipe model and add the following line

accepts_nested_attributes_for :steps

The line is required by formtastic, not active admin. Check https://github.com/justinfrench/formtastic for formtastic documentation

Answer 2

class Recipe < ActiveRecord::Base

    attr_accessible :step_attributes

    has_many :steps

    accepts_nested_attributes_for :steps

end