ruby - Rails , enum role -

create enum user model

class user < activerecord::base   # include default devise modules. others available are:   # :confirmable, :lockable, :timeoutable , :omniauthable   devise :database_authenticatable, :registerable,          :recoverable, :rememberable, :trackable, :validatable   enum role: [:user, :manager]   has_many :tickets end 

and when sign_up user.manager error

undefined method `manager?' nil:nilclass 

my views _header.html.haml

%div   .navbar.navbar-fixed-top.navbar-inverse     %ul       -if user_signed_in?         %li= link_to 'new ticket', new_ticket_path, class: 'btn btn-danger'         %li= link_to 'log out', destroy_user_session_path,                                 class: 'btn btn-primary',                                 method: :delete       -elsif current_user.manager?         %li= link_to 'all tickets', '#'       -else         %li= link_to 'sign up', new_user_registration_path, class: 'btn btn-primary'         %li= link_to 'log in', new_user_session_path, class: 'btn btn-primary' 

  -if user_signed_in?     # skipped   -elsif current_user.manager?     # skipped  

what write illogical, since current_user defined, when user is signed in.

your elsif invoked when no user is signed in, throw error, obviously, since calling method on nil (no current_user).