Question

I have 2 models that I am currently testing with. One is the top level model (Account::User) and the other is an associated model (Account::Profile). I am having some difficulty pulling data from the associated model.

The code below is for Rails 3.1

I am getting the exception:

undefined method profile' for #<Class:0x7fe8aa0674b8>

Currently my models look like this:

Account::User:

class Account::User < ActiveRecord::Base

validates_presence_of :username, :first_name, :last_name, :instance_id, :user_type, :is_active
validates_uniqueness_of :username

has_one :profile, :class_name=> 'Account::Profile'

def self.all_by_user_type(user_type)
  return all :conditions => ["user_type = ?", user_type]
end

def self.all_by_user_status(user_status)
  return all :conditions => ["is_active = ?", user_status]
end

def self.all_by_last_login(last_login)
  return all :conditions => ["last_login between ? and ?", last_login, Date.current]
end

def self.all_by_created_by(created_by)
  return all :conditions => ["created_by = ?", created_by]
end
end

Account::Profile

class Account::Profile < ActiveRecord::Base
   belongs_to :user, :class_name 'Account::User'
end

My controller action looks like this:

def dashboard
    @user = Account::User.profile
end

Answer 1

When you write Account::User.profile, you’re trying to access a class method named profile. Now, has_one (and friends) actually sets up the relationship on instances of the class, so you might use it like @user.profile.