Question

I’ve the following Category model :

class Category < ActiveRecord::Base
  belongs_to :parent, :class_name => "Category", :foreign_key => "parent_id"
  has_many :categories, :class_name => "Category", :foreign_key => "parent_id"
end

and I want to be able to filter by parent category and select the parent category in add / edit categories

Answer 1

The problem was with column ‘name’, as ActiveAdmin is looking for column ‘name’, but in my case I don’t have this column. So, I update my model to have ‘name’ method. Then it works fine