app/controllers/sessions_controller.rb
class SessionsController < Devise::SessionsController
before_action :set_default_email
before_action :before_login,
only: :create
private
def before_login
sign_out current_admin if current_admin
sign_out current_annotator if current_annotator
end
def set_default_email
@default_email = params[:email]
end
end