rails new profile
cd profile
rails s #localhost3000で起動の確認

로그인 기능 설치

rails g controller comments index

login_app/config/routes.rb

Rails.application.routes.draw do
  root 'comments#index' # ここを追記します
  get 'comments/index' # 自動で設定されたルーティング
  devise_for :users
end

login_app/gemfile

gem 'devise' #適当に挿入

bundle install

이제 divise를 이용하는 데 필요한 파일을 만듭시다.

rails g devise:install

config/environments/development.rb

config.action_mailer.default_url_options = { host: 'localhost', port: 3000 }
#上の方にはりつけ

app/views/layouts/application.html.erb

<p class="notice"><%= notice %></p>
<p class="alert"><%= alert %></p>

<%=yield%>하기 전에 이것을 보충하세요.

rails g devise user #ログイン機能用のモデルを作成
rake db:migrate #マイグレート
rails g devise:views #ログイン機能に必要なビューファイルをまとめて作成

views/comments/index.html.erb

<h1>ログインアプリ</h1>

<% if user_signed_in? %> <!-- ユーザーがログインしているか調べる -->
  <!-- ユーザーがログインしていた時の処理 -->

  <h4> メールアドレス： <%= current_user.email %> </h4>
  <%= link_to "ログアウト", destroy_user_session_path, method: :delete %> <!-- ログアウトをする -->
<% else %>
  <!-- ユーザーがログインしていなかった時の処理 -->
  <h2> 現在ログインしていません </h2>
  <%= link_to "新規登録", new_user_registration_path, class: 'post' %> <!-- 新規登録画面に移行する -->
<% end %>

원래의 물건을 지우고 전부 붙이다

추가 테이블 작성

rails g scaffold profile user_id:integer name:string age:integer address:string
rails g scaffold article user_id:integer profile_id:integer tittle:string content:string
#articleとprofileMのVCの作成

부자 관계를 맺다

model/user.rb

class User < ApplicationRecord
  # Include default devise modules. Others available are:
  # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
  devise :database_authenticatable, :registerable,
         :recoverable, :rememberable, :validatable
  has_one :profile
  has_many :articles          
end

model/profile.rb

class Profile < ApplicationRecord
  belongs_to :user
  has_many :articles
end

model/profile.rb

class Profile < ApplicationRecord
  belongs_to :user
  has_many :articles
end

model/article.rb

class Article < ApplicationRecord
  belongs_to :user
  belongs_to :profile
end

모델 생성하기

rake db:migrate   

로그인 후 new 소개 만들기

comments/index.html.erb

  <%= link_to 'New Profile', new_profile_path %>
  <% else %>

<%else%>에 붙여넣기
브라우저에서 작업 확인

로그인한 사용자가 생성 또는 편집할 수 있도록 허용

profiles_controller.rb

class ProfilesController < ApplicationController
  before_action :set_profile, only: [:show, :edit, :update, :destroy]
  before_action :authenticate_user!

  # GET /profiles or /profiles.json
  def index
    @profiles = Profile.all
  end

  # GET /profiles/1 or /profiles/1.json
  def show
  end

  # GET /profiles/new
  def new
    @profile = Profile.find_or_create_by(:user_id => current_user.id)
    redirect_to edit_profile_url(@profile)
  end

  # GET /profiles/1/edit
  def edit
    if @profile.user_id != current_user.id
      raise ActionController::RoutingError.new("Not authorized")
    end
  end

  # POST /profiles or /profiles.json
  def create
    @profile = Profile.new(profile_params)

    respond_to do |format|
      if @profile.save
        format.html { redirect_to @profile, notice: "Profile was successfully created." }
        format.json { render :show, status: :created, location: @profile }
      else
        format.html { render :new, status: :unprocessable_entity }
        format.json { render json: @profile.errors, status: :unprocessable_entity }
      end
    end
  end

  # PATCH/PUT /profiles/1 or /profiles/1.json
  def update
    respond_to do |format|
      if @profile.update(profile_params)
        format.html { redirect_to @profile, notice: "Profile was successfully updated." }
        format.json { render :show, status: :ok, location: @profile }
      else
        format.html { render :edit, status: :unprocessable_entity }
        format.json { render json: @profile.errors, status: :unprocessable_entity }
      end
    end
  end

  # DELETE /profiles/1 or /profiles/1.json
  def destroy
    @profile.destroy
    respond_to do |format|
      format.html { redirect_to profiles_url, notice: "Profile was successfully destroyed." }
      format.json { head :no_content }
    end
  end

  private
    # Use callbacks to share common setup or constraints between actions.
    def set_profile
      @profile = Profile.find(params[:id])
    end

    # Only allow a list of trusted parameters through.
    def profile_params
      params.require(:profile).permit(:user_id, :name, :age, :address)
    end
end

profiles/index.html.erb

<%= link_to 'New Article', new_article_path %>

마지막 행에 추가

Artical의 사용자ID 현재 로그인한 사용자의 ID

articles_controller.rb

  def new
    @article = Article.new(:user_id => current_user.id)
  end

user_id를 형식으로 변경할 수 없음
articles/_form.erb

 <div class="field">
    <%= form.hidden_field :user_id %>
  </div>

hidden_필드로 변경, label 떼기