ruby on rails - Devise User Stack Level Too Deep Error - Possibly due to this added Username funcitonality -

when try access current_user via devise...

def current_user      @user =  user.find(current_user.id)     @user end 

and render of attributes in json via rabl template...

object @user attributes :email, :username 

i error...

systemstackerror @ /api/current_user stack level deep 

i think error due within user model, modified add in username field. followed devise's instructions here add functionality...

class user < activerecord::base   # include default devise modules. others available are:   # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable , :omniauthable   devise :database_authenticatable, :registerable,          :recoverable, :rememberable, :trackable, :validatable    attr_accessible :login, :username, :email, :password, :password_confirmation, :remember_me    has_many :cart_items, dependent: :destroy    # virtual attribute authenticating either username or email   # in addition real persisted field 'username'   attr_accessor :login    def self.find_first_by_auth_conditions(warden_conditions)       conditions = warden_conditions.dup       if login = conditions.delete(:login)         where(conditions).where(["lower(username) = :value or lower(email) = :value", { :value => login.downcase }]).first       else         where(conditions).first       end   end  end 

you calling current_user within current_user...

def current_user     @user =  user.find(current_user.id)                            ^^^^ 

it calls itself, calls again, , again... until stack overflow

i'm not sure you seem need re-write current_user method. afaik devise you. can show me in tutorial says rewrite def current_user?