[RUBY] [Rails] Added in devise: username not added to database


--The sign_up screen does not save even if you enter the user name --I can't save to DB for some reason with rollback transaction


--Introducing devise and adding a new column
(this time: username column) --The error message is translated into Japanese

What i did

--I don't understand the English error, so Japaneseize devise and
[Correct "translation missing" after Devise Japaneseization] See (https://poinorou.hatenablog.com/entry/2019/09/16/090336)


to application_controller


class ApplicationController < ActionController::Base
  protect_from_forgery with: :exception
  before_action :configure_permitted_parameters, if: :devise_controller?

  def configure_permitted_parameters
    devise_parameter_sanitizer.permit(:sign_up, keys: [:username])

Fill in: ok_hand:

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