Strong Params

users_controller.rb

class UserController < ApplicationController

  def create
    @user = User.new(user_params)
    respond_to do |format|
      if @user.save
        ...
      else
        ...
      end
    end
  end

  private

  def user_params
    params.require(:user).permit(
      :name, :email, :password, :password_confirmation
    )
  end
  
end