ActiveAdmin with has_many problem; undefined method 'new_record?'
23,357
Solution 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
Solution 2
class Recipe < ActiveRecord::Base
attr_accessible :step_attributes
has_many :steps
accepts_nested_attributes_for :steps
end
Author by
nickpellant
Updated on July 17, 2022Comments
-
nickpellant almost 2 years
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!