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 :steps
end
class Step < ActiveRecord::Base
acts_as_list :scope => :recipe
belongs_to :recipe
end
I have the following in my ActiveAdmin file with relation to this:
form do |f|
f.has_many :steps do |ing_f|
ing_f.inputs
end
end
The following error is thrown when I try to load the form:
undefined method `new_record?' for nil:NilClass
I've isolated it so far to the has_many method but I'm lost past this. Any advice and help would be appreciated!
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