NameError Exception: uninitialized constant User::CustomFieldDatum

Question

I am trying a polymorphic association between tables. I have this in my User model.

user.rb

 has_many :custom_field_data, as: :customizable
 accepts_nested_attributes_for :customizable

custom_field_data.rb

class CustomFieldData < ActiveRecord::Base
  belongs_to :customizable, polymorphic: true
  belongs_to :custom_field
end

when I am trying to build @user attribute in users_controller like this:

def new
  @user = @current_company.users.build
  @customizable = @user.customizable.build
end

its throwing me an error:

 NoMethodError (undefined method `customizable' for #<User:0x000000045dbe58>):
 app/controllers/users_controller.rb:16:in `new'

when I am trying to access @user.custom_field_data , I am getting this:

*** NameError Exception: uninitialized constant User::CustomFieldDatum

I don't know, where I am doing wrong. Thanks in advance.

Answer 1

if you are using gem files. once again bundle it

Answer 2

try this out:

this issue is because of you have wrong model name(plural) ie CustomFieldData, it should be CustomFieldDatum, because data is a plural word, and Datum is singular.

so to fix it specify class name along with association in user model.

has_many :custom_field_data, as: :customizable, class_name: 'CustomFieldData'