bootcamp/app/controllers/users_controller.rb

class UsersController < ApplicationController
  before_action :require_signin, except: [:new, :create]
  before_action :set_user, only: [:show, :edit, :update, :destroy, :require_correct_user]
  before_action :require_correct_user, only: [:edit, :update, :destroy]

  def index
    @users = User.all
  end

  def new
    @user = User.new
  end

  def show
  end

  def create
    @user = User.new(user_params)
    if @user.save
      session[:user_id] = @user.id
      redirect_to @user, notice: "Thanks for signing up!" 
    else
      render :new, status: :unprocessable_entity
    end
  end

  def edit
  end

  def update
    if @user.update(user_params)
      redirect_to @user, notice: "Account successfully updated!"
    else
      render :edit, status: :unprocessable_entity
    end
  end

  def destroy
    @user.destroy
    session[:user_id] = nil
    redirect_to movies_url, status: :see_other, alert: "Account successfully deleted!"
  end

  private

  def set_user
    @user = User.find(params[:id])
  end

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

  def require_correct_user
    unless current_user?(@user)
      redirect_to root_url, status: :see_other
    end
  end
end