Exception: ActiveModel::MissingAttributeError

Inherits:

NoMethodError

• Object
• NoMethodError
• ActiveModel::MissingAttributeError

Defined in:

activemodel/lib/active_model/attribute_methods.rb

Overview

Raised when an attribute is not defined.

class User < ActiveRecord::Base
  has_many :pets
end

user = User.first
user.pets.select(:id).first.user_id
# => ActiveModel::MissingAttributeError: missing attribute 'user_id' for Pet