I have a certain error bugging my head during adding username in my rails web app.
I did what it says in link: https://rubyonrailshelp.wordpress.com/2014/01/07/adding-a-username-to-the-user-admin-model/
There seems a error in browser like:
NoMethodError in Devise::RegistrationsController#edit
undefined method `for' for #<Devise::ParameterSanitizer:0xa8342f0>
def configure_permitted_parameters
devise_parameter_sanitizer.for(:sign_up) { |u| u.permit(:username, :email, :password, :password_confirmation, :remember_me) }
devise_parameter_sanitizer.for(:sign_in) { |u| u.permit(:username, :email, :password, :remember_me) }
devise_parameter_sanitizer.for(:account_update) {|u| u.permit(:username, :email, :password, :password_confirmation, :current_password)} #for account update
What making the error in application_controller.rb