{"id":3082,"date":"2021-12-05T10:05:30","date_gmt":"2021-12-05T01:05:30","guid":{"rendered":"https:\/\/suzutukiblog.com\/?p=3082"},"modified":"2022-01-23T05:31:28","modified_gmt":"2022-01-22T20:31:28","slug":"rails-tutorial13-3","status":"publish","type":"post","link":"https:\/\/suzutukiblog.com\/index.php\/2021\/12\/05\/rails-tutorial13-3\/","title":{"rendered":"Rails-tutorial(13.3\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u64cd\u4f5c\u3059\u308b \u4e3b\u306b\u6f14\u7fd2)"},"content":{"rendered":"

\u305d\u306e13.2\u304b\u3089\u7d9a\u304f<\/a><\/p>\n

13.3 \u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u64cd\u4f5c\u3059\u308b<\/h3>\n

\u6b21\u306fWeb\u7d4c\u7531\u3067\u305d\u308c\u3089\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306b
\n\u53d6\u308a\u304b\u304b\u308a\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u7bc0\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30d5\u30a3\u30fc\u30c9
\n(\u7b2c14\u7ae0\u3067\u5b8c\u6210\u3055\u305b\u307e\u3059) \u306e\u6700\u521d\u306e\u30d2\u30f3\u30c8\u3092\u304a\u898b\u305b\u3057\u307e\u3059\u3002
\n\u6700\u5f8c\u306b\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092Web\u7d4c\u7531\u3067\u7834\u68c4\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n

Microposts\u30ea\u30bd\u30fc\u30b9\u3078\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306f\u3001\u4e3b\u306b\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3068Home\u30da\u30fc\u30b8\u306e\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u7d4c\u7531\u3057\u3066\u5b9f\u884c\u3055\u308c\u308b\u306e\u3067\u3001
\nMicroposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b\u306fnew\u3084edit\u306e\u3088\u3046\u306a\u30a2\u30af\u30b7\u30e7\u30f3\u306f\u4e0d\u8981\u3068
\n\u3044\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u3064\u307e\u308a\u3001create\u3068destroy\u304c\u3042\u308c\u3070\u5341\u5206\u3067\u3059\u3002<\/p>\n

\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u30ea\u30bd\u30fc\u30b9\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0
\nconfig\/routes.rb<\/strong><\/p>\n

\uff03\u8ffd\u52a0\r\nresources :microposts, only: [:create, :destroy]<\/strong><\/pre>\n
HTTP\u30ea\u30af\u30a8\u30b9\u30c8 URL \u3000\u3000\u3000\u30a2\u30af\u30b7\u30e7\u30f3 \u540d\u524d\u4ed8\u304d\u30eb\u30fc\u30c8<\/strong>\r\nPOST \u3000\u3000\u3000\u3000\u3000\u3000\u3000\/microposts create microposts_path<\/strong>\r\nDELETE \u3000\u3000\u3000\u3000\u3000\u3000\/microposts\/1 destroy micropost_path(micropost)<\/strong><\/pre>\n
13.3.1 \u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1<\/h3>\n
Microposts\u30ea\u30bd\u30fc\u30b9\u306e\u958b\u767a\u3067\u306f\u3001Microposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u5185\u306e
\n\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u304b\u3089\u59cb\u3081\u308b\u3053\u3068\u306b\u3057\u307e\u3057\u3087\u3046\u3002
\n\u95a2\u9023\u4ed8\u3051\u3089\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u3092\u901a\u3057\u3066\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u306e\u3067\u3001create\u30a2\u30af\u30b7\u30e7\u30f3\u3084destroy\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5229\u7528\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u30ed\u30b0\u30a4\u30f3\u6e08\u307f\u3067\u306a\u3051\u308c\u3070\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n
\u30ed\u30b0\u30a4\u30f3\u6e08\u307f\u304b\u3069\u3046\u304b\u3092\u78ba\u304b\u3081\u308b\u30c6\u30b9\u30c8\u3067\u306f\u3001
\nUsers\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u7528\u306e\u30c6\u30b9\u30c8\u304c\u305d\u306e\u307e\u307e\u5f79\u306b\u7acb\u3061\u307e\u3059\u3002<\/p>\n
\u6b63\u3057\u3044\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u5404\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u5411\u3051\u3066\u767a\u884c\u3057\u3001
\n\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u6570\u304c\u5909\u5316\u3057\u3066\u3044\u306a\u3044\u304b\u3069\u3046\u304b\u3001
\n\u307e\u305f\u3001\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u308b\u304b\u3069\u3046\u304b\u3092\u78ba\u304b\u3081\u308c\u3070\u3088\u3044\u306e\u3067\u3059\u3002<\/p>\n
Microposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u8a8d\u53ef\u30c6\u30b9\u30c8 red
\ntest\/controllers\/microposts_controller_test.rb<\/strong><\/p>\n
require 'test_helper'<\/strong>\r\n\r\nclass MicropostsControllerTest < ActionDispatch::IntegrationTest<\/strong>\r\n\r\ndef setup<\/strong>\r\n  @micropost = microposts(:orange)<\/strong>\r\nend<\/strong>\r\n\r\ntest \"should redirect create when not logged in\" do<\/strong>\r\n assert_no_difference 'Micropost.count' do<\/strong>\r\n  post microposts_path, params: { micropost: { content: \"Lorem ipsum\" } }<\/strong>\r\n end<\/strong>\r\n assert_redirected_to login_url<\/strong>\r\nend<\/strong>\r\n\r\ntest \"should redirect destroy when not logged in\" do<\/strong>\r\n assert_no_difference 'Micropost.count' do<\/strong>\r\n  delete micropost_path(@micropost)<\/strong>\r\n end<\/strong>\r\n assert_redirected_to login_url<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
\u5c11\u3057\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u5074\u306e\u30b3\u30fc\u30c9\u3092\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
\n\u3068\u3044\u3046\u306e\u3082\u3001before\u30d5\u30a3\u30eb\u30bf\u30fc\u306elogged_in_user\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u3001
\n\u30ed\u30b0\u30a4\u30f3\u3092\u8981\u6c42\u3057\u305f\u3053\u3068\u306b\u3064\u3044\u3066\u601d\u3044\u51fa\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
Users\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u5185\u306b\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u304c\u3042\u3063\u305f\u306e\u3067\u3001
\nbefore\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u6307\u5b9a\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001
\n\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u306fMicroposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067\u3082\u5fc5\u8981\u3067\u3059\u3002
\n\u305d\u3053\u3067\u3001\u5404\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304c\u7d99\u627f\u3059\u308bApplication\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b
\n(4.4.4)\u3001\u3053\u306e\u30e1\u30bd\u30c3\u30c9\u3092\u79fb\u3057\u3066\u3057\u307e\u3044\u307e\u3057\u3087\u3046\u3002<\/p>\n
ogged_in_user\u30e1\u30bd\u30c3\u30c9\u3092Application\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b\u79fb\u3059
\napp\/controllers\/application_controller.rb<\/strong><\/p>\n
class ApplicationController < ActionController::Base<\/strong>\r\nprotect_from_forgery with: :exception<\/strong>\r\ninclude SessionsHelper<\/strong>\r\n\r\nprivate<\/strong>\r\n\r\n# \u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30b0\u30a4\u30f3\u3092\u78ba\u8a8d\u3059\u308b<\/strong>\r\ndef logged_in_user<\/strong>\r\n unless logged_in?<\/strong>\r\n  store_location<\/strong>\r\n  flash[:danger] = \"Please log in.\"<\/strong>\r\n  redirect_to login_url<\/strong>\r\n  end<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
\u30b3\u30fc\u30c9\u304c\u91cd\u8907\u3057\u306a\u3044\u3088\u3046\u3001\u3053\u306e\u3068\u304dUsers\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304b\u3089\u3082
\nlogged_in_user\u3092\u524a\u9664\u3057\u3066\u304a\u304d\u307e\u3057\u3087\u3046<\/p>\n
Users\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u5185\u306elogged_in_user\u30d5\u30a3\u30eb\u30bf\u30fc\u3092\u524a\u9664\u3059\u308b red
\napp\/controllers\/users_controller.rb<\/strong><\/p>\n
class<\/span> UsersController<\/span> <<\/span> ApplicationController<\/span>\r\n  before_action<\/span> :logged_in_user<\/span>,<\/span> only<\/span>:<\/span> [<\/span>:index<\/span>,<\/span> :edit<\/span>,<\/span> :update<\/span>,<\/span> :destroy<\/span>]<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\n  private<\/span>\r\n\r\n    def<\/span> user_params<\/span>\r\n      params<\/span>.<\/span>require<\/span>(<\/span>:user<\/span>)<\/span>.<\/span>permit<\/span>(<\/span>:name<\/span>,<\/span> :email<\/span>,<\/span> :password<\/span>,<\/span>\r\n                                   :password_confirmation<\/span>)<\/span>\r\n    end<\/span>\r\n\r\n    # before\u30d5\u30a3\u30eb\u30bf\u30fc<\/span>\r\n\r\n    # \u6b63\u3057\u3044\u30e6\u30fc\u30b6\u30fc\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d<\/span>\r\n    def<\/span> correct_user<\/span>\r\n      @user<\/span> =<\/span> User<\/span>.<\/span>find<\/span>(<\/span>params<\/span>[<\/span>:id<\/span>]<\/span>)<\/span>\r\n      redirect_to<\/span>(<\/span>root_url<\/span>)<\/span> unless<\/span> current_user?<\/span>(<\/span>@user<\/span>)<\/span>\r\n    end<\/span>\r\n\r\n    # \u7ba1\u7406\u8005\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d<\/span>\r\n    def<\/span> admin_user<\/span>\r\n      redirect_to<\/span>(<\/span>root_url<\/span>)<\/span> unless<\/span> current_user<\/span>.<\/span>admin?<\/span>\r\n    end<\/span>\r\nend<\/span><\/strong><\/pre>\n
Microposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304b\u3089\u3082logged_in_user\u30e1\u30bd\u30c3\u30c9\u3092\u547c\u3073\u51fa\u305b\u308b
\n\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u306b\u3088\u308a\u3001create\u30a2\u30af\u30b7\u30e7\u30f3\u3084destroy\u30a2\u30af\u30b7\u30e7\u30f3\u306b
\n\u5bfe\u3059\u308b\u30a2\u30af\u30bb\u30b9\u5236\u9650\u304c\u3001before\u30d5\u30a3\u30eb\u30bf\u30fc\u3067\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059<\/p>\n
Microposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u5404\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u8a8d\u53ef\u3092\u8ffd\u52a0\u3059\u308b green
\napp\/controllers\/microposts_controller.rb<\/strong><\/p>\n
class MicropostsController < ApplicationController<\/strong>\r\nbefore_action :logged_in_user, only: [:create, :destroy]<\/strong>\r\n\r\n def create<\/strong>\r\n end<\/strong>\r\n\r\n def destroy<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
\u6f14\u7fd2<\/h2>\n
1:\u306a\u305cUsers\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u5185\u306b\u3042\u308blogged_in_user\u30d5\u30a3\u30eb\u30bf\u30fc\u3092
\n\u6b8b\u3057\u305f\u307e\u307e\u306b\u3059\u308b\u3068\u30de\u30ba\u30a4\u306e\u3067\u3057\u3087\u3046\u304b? \u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/h3>\n
\u30b3\u30fc\u30c9\u304c\u91cd\u8907\u3057\u3066\u601d\u308f\u306c\u52d5\u4f5c\u304c\u8d77\u304d\u308b\u304b\u3089<\/p>\n
13.3.2\u00a0<\/span>\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u4f5c\u6210\u3059\u308b<\/h3>\n
\u6700\u5f8c\u306b\u30db\u30fc\u30e0\u753b\u9762\u3092\u5b9f\u88c5\u3057\u305f\u3068\u304d\u306f[Sign up now!]\u30dc\u30bf\u30f3\u304c\u4e2d\u592e\u306b\u3042\u308a\u307e\u3057\u305f\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u4f5c\u6210\u30d5\u30a9\u30fc\u30e0\u306f\u3001
\n\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u7279\u5b9a\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3067\u306e\u307f\u6a5f\u80fd\u3059\u308b\u306e\u3067\u3001
\n\u3053\u306e\u7bc0\u306e\u4e00\u3064\u306e\u76ee\u6a19\u306f\u3001
\n\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30b0\u30a4\u30f3\u72b6\u614b\u306b\u5fdc\u3058\u3066\u3001\u30db\u30fc\u30e0\u753b\u9762\u306e\u8868\u793a\u3092\u5909\u66f4\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n
\u6b21\u306b\u3001\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306ecreate\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u4f5c\u308a\u59cb\u3081\u307e\u3057\u3087\u3046\u3002
\n\u3053\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3082\u3001\u30e6\u30fc\u30b6\u30fc\u7528\u30a2\u30af\u30b7\u30e7\u30f3\u3068\u4f3c\u3066\u3044\u307e\u3059\u3002\u9055\u3044\u306f\u3001
\n\u65b0\u3057\u3044\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092build\u3059\u308b\u305f\u3081\u306bUser\/Micropost\u95a2\u9023\u4ed8\u3051\u3092
\n\u4f7f\u3063\u3066\u3044\u308b\u70b9\u3067\u3059<\/p>\n
micropost_params\u3067Strong Parameters\u3092\u4f7f\u3063\u3066\u3044\u308b\u3053\u3068\u306b\u3088\u308a\u3001
\n\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306econtent\u5c5e\u6027\u3060\u3051\u304cWeb\u7d4c\u7531\u3067\u5909\u66f4\u53ef\u80fd\u306b\u306a\u3063\u3066\u3044\u308b\u70b9\u306b
\n\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
Microposts\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306ecreate\u30a2\u30af\u30b7\u30e7\u30f3
\napp\/controllers\/microposts_controller.rb<\/strong><\/p>\n
class MicropostsController < ApplicationController<\/strong>\r\nbefore_action :logged_in_user, only: [:create, :destroy]<\/strong>\r\n\r\ndef create<\/strong>\r\n  @micropost = current_user.microposts.build(micropost_params)<\/strong>\r\n if @micropost.save<\/strong>\r\n  flash[:success] = \"Micropost created!\"<\/strong>\r\n   redirect_to root_url<\/strong>\r\n  else<\/strong>\r\n   render 'static_pages\/home'<\/strong>\r\n end<\/strong>\r\nend<\/strong>\r\n\r\ndef destroy<\/strong>\r\nend<\/strong>\r\n\r\nprivate<\/strong>\r\n\r\n  def micropost_params<\/strong>\r\n    params.require(:micropost).permit(:content)<\/strong>\r\n  end<\/strong>\r\nend<\/strong><\/pre>\n
\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u4f5c\u6210\u30d5\u30a9\u30fc\u30e0\u3092\u69cb\u7bc9\u3059\u308b\u305f\u3081\u306b\u3001
\n\u30b5\u30a4\u30c8\u8a2a\u554f\u8005\u304c\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306b\u5fdc\u3058\u3066\u7570\u306a\u308bHTML\u3092\u63d0\u4f9b\u3059\u308b\u30b3\u30fc\u30c9\u3092\u4f7f\u3044\u307e\u3059<\/p>\n
Home\u30da\u30fc\u30b8 (\/) \u306b\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u6295\u7a3f\u30d5\u30a9\u30fc\u30e0\u3092\u8ffd\u52a0\u3059\u308bapp\/views\/static_pages\/home.html.erb<\/code><\/strong><\/p>\n
<% if logged_in? %><\/strong>\r\n <div class=\"row\"><\/strong>\r\n  <aside class=\"col-md-4\"><\/strong>\r\n   <section class=\"user_info\"><\/strong>\r\n    <%= render 'shared\/user_info' %><\/strong>\r\n   <\/section><\/strong>\r\n   <section class=\"micropost_form\"><\/strong>\r\n    <%= render 'shared\/micropost_form' %><\/strong>\r\n   <\/section><\/strong>\r\n  <\/aside><\/strong>\r\n <\/div><\/strong>\r\n<% else %><\/strong>\r\n\u30fb<\/strong>\r\n\u30fb<\/strong>\r\n<% end %><\/strong><\/pre>\n
\u30b3\u30fc\u30c9\u3092\u52d5\u304b\u3059\u305f\u3081\u306b\u306f\u3001\u3044\u304f\u3064\u304b\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u4f5c\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305a\u306fHome\u30da\u30fc\u30b8\u306e\u65b0\u3057\u3044\u30b5\u30a4\u30c9\u30d0\u30fc\u304b\u3089\u3067\u3059\u3002
\n\u6b21\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30b5\u30a4\u30c9\u30d0\u30fc\u3067\u8868\u793a\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u306e\u30d1\u30fc\u30b7\u30e3\u30eb
\napp\/views\/shared\/_user_info.html.erb<\/strong><\/p>\n
<%= link_to gravatar_for(current_user, size: 50),<\/strong>\r\ncurrent_user %><\/strong>\r\n<h1><%= current_user.name %><\/h1><\/strong>\r\n<span><%= link_to \"view my profile\", current_user %><\/span><\/strong>\r\n<span><%= pluralize(current_user.microposts.count,<\/strong>\r\n\"micropost\") %><\/span><\/strong><\/pre>\n
\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u6295\u7a3f\u3057\u305f\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u7dcf\u6570\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u305f\u3060\u3057\u5c11\u3057\u8868\u793a\u306b\u9055\u3044\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30b5\u30a4\u30c9\u30d0\u30fc\u3067\u306f\u3001 \u201cMicroposts\u201d \u3092\u30e9\u30d9\u30eb\u3068\u3057\u3001
\n\u300cMicroposts (1)\u300d\u3068\u8868\u793a\u3059\u308b\u3053\u3068\u306f\u554f\u984c\u3042\u308a\u307e\u305b\u3093\u3002
\n\u3057\u304b\u3057\u3001\u4eca\u56de\u306e\u3088\u3046\u306b \u201c1 microposts\u201d \u3068\u8868\u793a\u3057\u3066\u3057\u307e\u3046\u3068
\n\u82f1\u8a9e\u306e\u6587\u6cd5\u4e0a\u8aa4\u308a\u306b\u306a\u3063\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u3053\u3067\u3001pluralize\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066
\n\u201c1 micropost\u201d \u3084 \u201c2 microposts\u201d \u3068\u8868\u793a\u3059\u308b\u3088\u3046\u306b\u8abf\u6574\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
 <\/p>\n
\u6b21\u306f\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u4f5c\u6210\u30d5\u30a9\u30fc\u30e0\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002
\n\u3053\u308c\u306f\u30e6\u30fc\u30b6\u30fc\u767b\u9332\u30d5\u30a9\u30fc\u30e0\u306b\u4f3c\u3066\u3044\u307e\u3059\u3002
\n\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u6295\u7a3f\u30d5\u30a9\u30fc\u30e0\u306e\u30d1\u30fc\u30b7\u30e3\u30eb<\/p>\n
app\/views\/shared\/_micropost_form.html.erb<\/strong><\/p>\n
<%= form_for(@micropost) do |f| %><\/strong>\r\n <%= render 'shared\/error_messages', object: f.object %><\/strong>\r\n <div class=\"field\"><\/strong>\r\n   <%= f.text_area :content, placeholder: \"Compose new micropost...\" %><\/strong>\r\n <\/div><\/strong>\r\n <%= f.submit \"Post\", class: \"btn btn-primary\" %><\/strong>\r\n<% end %><\/strong><\/pre>\n
\u30d5\u30a9\u30fc\u30e0\u304c\u52d5\u304f\u3088\u3046\u306b\u3059\u308b\u305f\u3081\u306b\u306f\u30012\u7b87\u6240\u306e\u5909\u66f4\u304c\u5fc5\u8981\u3067\u3059\u30021\u3064\u306f\u3001
\n(\u4ee5\u524d\u3068\u540c\u69d8) \u95a2\u9023\u4ed8\u3051\u3092\u4f7f\u3063\u3066\u6b21\u306e\u3088\u3046\u306b@micropost\u3092\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n
home<\/code>\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u3092\u8ffd\u52a0\u3059\u308bapp\/controllers\/static_pages_controller.rb<\/code><\/strong><\/span><\/div>\n
\n
\n
class<\/span> StaticPagesController<\/span> <<\/span> ApplicationController<\/span>\r\n\r\n  def<\/span> home<\/span>\r\n    @micropost<\/span> =<\/span> current_user<\/span>.<\/span>microposts<\/span>.<\/span>build<\/span> if<\/span> logged_in?<\/span>\r\n<\/span>  end<\/span>\r\n\r\n  def<\/span> help<\/span>\r\n  end<\/span>\r\n\r\n  def<\/span> about<\/span>\r\n  end<\/span>\r\n\r\n  def<\/span> contact<\/span>\r\n  end<\/span>\r\nend<\/span><\/strong><\/pre>\n<\/div>\n<\/div>\n
current_user\u30e1\u30bd\u30c3\u30c9\u306f\u30e6\u30fc\u30b6\u30fc\u304c\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u3068\u304d\u3057\u304b\u4f7f\u3048\u307e\u305b\u3093
\n\u3064\u307e\u308a\u3001@micropost\u5909\u6570\u3082\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u3068\u304d\u306e\u307f
\n\u5b9a\u7fa9\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30ea\u30b9\u30c813.39\u3092\u52d5\u304b\u3059\u305f\u3081\u306e\u3082\u30461\u3064\u306e\u5909\u66f4\u306f\u3001
\n\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u518d\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u3067\u306a\u3051\u308c\u3070\u3001
\n\u6b21\u306e\u30b3\u30fc\u30c9\u304c\u52d5\u304d\u307e\u305b\u3093\u3002<\/p>\n
<%= render 'shared\/error_messages', object: f.object %><\/strong><\/pre>\n
form_for(@user) do |f|\u4e0a\u306e\u3088\u3046\u306bf.object\u304c@user\u3068\u306a\u308b\u5834\u5408\u3068\u3001<\/p>\n
form_for(@micropost) do |f|<\/strong><\/pre>\n
\u4e0a\u306e\u3088\u3046\u306bf.object\u304c@micropost\u306b\u306a\u308b\u5834\u5408\u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
\u30d1\u30fc\u30b7\u30e3\u30eb\u306b\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u6e21\u3059\u305f\u3081\u306b\u3001\u5024\u304c\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3067\u3001
\n\u30ad\u30fc\u304c\u30d1\u30fc\u30b7\u30e3\u30eb\u3067\u306e\u5909\u6570\u540d\u3068\u540c\u3058\u30cf\u30c3\u30b7\u30e5\u3092\u5229\u7528\u3057\u307e\u3059\u3002
\n\u3053\u308c\u3067\u30012\u884c\u76ee\u306e\u30b3\u30fc\u30c9\u304c\u5b8c\u6210\u3057\u307e\u3059\u3002\u8a00\u3044\u63db\u3048\u308b\u3068\u3001object: f.object\u306ferror_messages\u30d1\u30fc\u30b7\u30e3\u30eb\u306e\u4e2d\u3067object\u3068\u3044\u3046\u5909\u6570\u540d\u3092
\n\u4f5c\u6210\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3001\u3053\u306e\u5909\u6570\u3092\u4f7f\u3063\u3066\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u66f4\u65b0\u3059\u308c\u3070\u3088\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n
User\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u4ee5\u5916\u3067\u3082\u52d5\u4f5c\u3059\u308b\u3088\u3046\u306berror_messages\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u66f4\u65b0\u3059\u308b red
\napp\/views\/shared\/_error_messages.html.erb<\/strong><\/p>\n
<% if object.errors.any? %><\/strong>\r\n<div id=\"error_explanation\"><\/strong>\r\n <div class=\"alert alert-danger\"><\/strong>\r\n  The form contains <%= pluralize(object.errors.count, \"error\") %>.<\/strong>\r\n <\/div><\/strong>\r\n<ul><\/strong>\r\n<% object.errors.full_messages.each do |msg| %><\/strong>\r\n    <li><%= msg %><\/li><\/strong>\r\n   <% end %><\/strong>\r\n  <\/ul><\/strong>\r\n <\/div><\/strong>\r\n<% end %><\/strong><\/pre>\n
\u306a\u305c\u5931\u6557\u3057\u3066\u3044\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002error_messages\u30d1\u30fc\u30b7\u30e3\u30eb\u306e\u4ed6\u306e
\n\u51fa\u73fe\u5834\u6240\u3067\u3059\u3002
\n\u3053\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u306f\u4ed6\u306e\u5834\u6240\u3067\u3082\u4f7f\u308f\u308c\u3066\u3044\u305f\u305f\u3081\u3001
\n\u30e6\u30fc\u30b6\u30fc\u767b\u9332\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u518d\u8a2d\u5b9a\u3001\u305d\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u7de8\u96c6\u306e\u305d\u308c\u305e\u308c\u306e\u30d3\u30e5\u30fc\u3092\u66f4\u65b0\u3059\u308b\u5fc5\u8981\u304c\u3042\u3063\u305f\u306e\u3067\u3059\u3002
\n\u5404\u30d3\u30e5\u30fc\u3092\u66f4\u65b0\u3057\u305f\u7d50\u679c\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n
\n
\u30e6\u30fc\u30b6\u30fc\u767b\u9332\u6642\u306e\u30a8\u30e9\u30fc\u8868\u793a\u3092\u66f4\u65b0\u3059\u308bapp\/views\/users\/new.html.erb<\/code><\/span><\/div>\n
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<%<\/span> provide<\/span>(<\/span>:title<\/span>,<\/span> 'Sign up'<\/span>)<\/span> %><\/span>\r\n<<\/span>h1<\/span>><\/span>Sign up<\/<\/span>h1<\/span>><\/span>\r\n\r\n<<\/span>div<\/span> class<\/span>=<\/span>\"row\"<\/span>><\/span>\r\n  <<\/span>div<\/span> class<\/span>=<\/span>\"col-md-6 col-md-offset-3\"<\/span>><\/span>\r\n    <%=<\/span> form_for<\/span>(<\/span>@user<\/span>)<\/span> do<\/span> |<\/span>f<\/span>|<\/span> %><\/span>\r\n      <%=<\/span> render<\/span> 'shared\/error_messages'<\/span>,<\/span> object<\/span>:<\/span> f<\/span>.<\/span>object<\/span> %><\/span>\r\n<\/span>      <%=<\/span> f<\/span>.<\/span>label<\/span> :name<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>text_field<\/span> :name<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :email<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>email_field<\/span> :email<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :password<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>password_field<\/span> :password<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :password_confirmation<\/span>,<\/span> \"Confirmation\"<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>password_field<\/span> :password_confirmation<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>submit<\/span> \"Create my account\"<\/span>,<\/span> class<\/span>:<\/span> \"btn btn-primary\"<\/span> %><\/span>\r\n    <%<\/span> end<\/span> %><\/span>\r\n  <\/<\/span>div<\/span>><\/span>\r\n<\/<\/span>div<\/span>><\/span>\r\n<\/strong><\/pre>\n<\/div>\n<\/div>\n<\/div>\n
\n
\u30ea\u30b9\u30c8 13.44:<\/span>\u00a0\u30e6\u30fc\u30b6\u30fc\u7de8\u96c6\u6642\u306e\u30a8\u30e9\u30fc\u8868\u793a\u3092\u66f4\u65b0\u3059\u308bapp\/views\/users\/edit.html.erb<\/code><\/span><\/div>\n
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<%<\/span> provide<\/span>(<\/span>:title<\/span>,<\/span> \"Edit user\"<\/span>)<\/span> %><\/span>\r\n<<\/span>h1<\/span>><\/span>Update your profile<\/<\/span>h1<\/span>><\/span>\r\n\r\n<<\/span>div<\/span> class<\/span>=<\/span>\"row\"<\/span>><\/span>\r\n  <<\/span>div<\/span> class<\/span>=<\/span>\"col-md-6 col-md-offset-3\"<\/span>><\/span>\r\n    <%=<\/span> form_for<\/span>(<\/span>@user<\/span>)<\/span> do<\/span> |<\/span>f<\/span>|<\/span> %><\/span>\r\n      <%=<\/span> render<\/span> 'shared\/error_messages'<\/span>,<\/span> object<\/span>:<\/span> f<\/span>.<\/span>object<\/span> %><\/span>\r\n<\/span>\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :name<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>text_field<\/span> :name<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :email<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>email_field<\/span> :email<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :password<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>password_field<\/span> :password<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :password_confirmation<\/span>,<\/span> \"Confirmation\"<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>password_field<\/span> :password_confirmation<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>submit<\/span> \"Save changes\"<\/span>,<\/span> class<\/span>:<\/span> \"btn btn-primary\"<\/span> %><\/span>\r\n    <%<\/span> end<\/span> %><\/span>\r\n\r\n    <<\/span>div<\/span> class<\/span>=<\/span>\"gravatar_edit\"<\/span>><\/span>\r\n      <%=<\/span> gravatar_for<\/span> @user<\/span> %><\/span>\r\n      <<\/span>a<\/span> href<\/span>=<\/span>\"http:\/\/gravatar.com\/emails\"<\/span>><\/span>change<\/<\/span>a<\/span>><\/span>\r\n    <\/<\/span>div<\/span>><\/span>\r\n  <\/<\/span>div<\/span>><\/span>\r\n<\/<\/span>div<\/span>><\/span>\r\n<\/strong><\/pre>\n<\/div>\n<\/div>\n<\/div>\n
\n
\u30ea\u30b9\u30c8 13.45:<\/span>\u00a0\u30d1\u30b9\u30ef\u30fc\u30c9\u518d\u8a2d\u5b9a\u6642\u306e\u30a8\u30e9\u30fc\u8868\u793a\u3092\u66f4\u65b0\u3059\u308bapp\/views\/password_resets\/edit.html.erb<\/code><\/span><\/div>\n
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\n
<%<\/span> provide<\/span>(<\/span>:title<\/span>,<\/span> 'Reset password'<\/span>)<\/span> %><\/span>\r\n<<\/span>h1<\/span>><\/span>Password reset<\/<\/span>h1<\/span>><\/span>\r\n\r\n<<\/span>div<\/span> class<\/span>=<\/span>\"row\"<\/span>><\/span>\r\n  <<\/span>div<\/span> class<\/span>=<\/span>\"col-md-6 col-md-offset-3\"<\/span>><\/span>\r\n    <%=<\/span> form_for<\/span>(<\/span>@user<\/span>,<\/span> url<\/span>:<\/span> password_reset_path<\/span>(<\/span>params<\/span>[<\/span>:id<\/span>]<\/span>))<\/span> do<\/span> |<\/span>f<\/span>|<\/span> %><\/span>\r\n      <%=<\/span> render<\/span> 'shared\/error_messages'<\/span>,<\/span> object<\/span>:<\/span> f<\/span>.<\/span>object<\/span> %><\/span>\r\n<\/span>\r\n      <%=<\/span> hidden_field_tag<\/span> :email<\/span>,<\/span> @user<\/span>.<\/span>email<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :password<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>password_field<\/span> :password<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>label<\/span> :password_confirmation<\/span>,<\/span> \"Confirmation\"<\/span> %><\/span>\r\n      <%=<\/span> f<\/span>.<\/span>password_field<\/span> :password_confirmation<\/span>,<\/span> class<\/span>:<\/span> 'form-control'<\/span> %><\/span>\r\n\r\n      <%=<\/span> f<\/span>.<\/span>submit<\/span> \"Update password\"<\/span>,<\/span> class<\/span>:<\/span> \"btn btn-primary\"<\/span> %><\/span>\r\n    <%<\/span> end<\/span> %><\/span>\r\n  <\/<\/span>div<\/span>><\/span>\r\n<\/<\/span>div<\/span>><\/span>\r\n<\/strong><\/pre>\n<\/div>\n<\/div>\n<\/div>\n
\u3053\u308c\u3067\u3001\u3059\u3079\u3066\u306e\u30c6\u30b9\u30c8\u304c\u00a0green<\/strong><\/span>\u306b\u306a\u308b\u306f\u305a\u3067\u3059\u3002<\/p>\n
\n
\n
rails test<\/strong><\/pre>\n<\/div>\n<\/div>\n
\u6f14\u7fd2<\/h2>\n
1:Home\u30da\u30fc\u30b8\u3092\u30ea\u30d5\u30a1\u30af\u30bf\u30ea\u30f3\u30b0\u3057\u3066\u3001if-else\u6587\u306e\u5206\u5c90\u306e\u305d\u308c\u305e\u308c\u306b\u5bfe\u3057\u3066\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u4f5c\u3063\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/h3>\n
<% if logged_in? %><\/strong>\r\n<%= render 'static_pages\/if'%><\/strong>\r\n<% else %><\/strong>\r\n<%= render 'static_pages\/else'%><\/strong>\r\n<% end %><\/strong><\/pre>\n
13.3.3 \u30d5\u30a3\u30fc\u30c9\u306e\u539f\u578b<\/h3>\n
\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u6295\u7a3f\u30d5\u30a9\u30fc\u30e0\u304c\u52d5\u304f\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u4eca\u306e\u6bb5\u968e\u3067\u306f\u6295\u7a3f\u3057\u305f\u5185\u5bb9\u3092\u3059\u3050\u306b\u898b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002Home\u30da\u30fc\u30b8\u306b\u307e\u3060\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u8868\u793a\u3059\u308b\u90e8\u5206\u304c\u5b9f\u88c5\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u3089\u3067\u3059\u3002<\/p>\n
\u3059\u3079\u3066\u306e\u30e6\u30fc\u30b6\u30fc\u304c\u30d5\u30a3\u30fc\u30c9\u3092\u6301\u3064\u306e\u3067\u3001feed\u30e1\u30bd\u30c3\u30c9\u306fUser\u30e2\u30c7\u30eb\u3067\u4f5c\u308b\u306e\u304c\u81ea\u7136\u3067\u3059\u3002
\n\u30d5\u30a3\u30fc\u30c9\u306e\u539f\u578b\u3067\u306f\u3001\u307e\u305a\u306f\u73fe\u5728\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306e
\n\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u3059\u3079\u3066\u53d6\u5f97\u3057\u3066\u304d\u307e\u3059\u3002
\n\u306a\u304a\u3001\u6b21\u7ae0\u3067\u5b8c\u5168\u306a\u30d5\u30a3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u3001
\n\u4eca\u56de\u306f\u7d39\u4ecb\u3057\u305fwhere\u30e1\u30bd\u30c3\u30c9\u3067\u3053\u308c\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002
\nUser\u30e2\u30c7\u30eb\u306b\u5909\u66f4\u3092\u52a0\u3048\u305f\u7d50\u679c\u3092\u793a\u3057\u307e\u3059<\/p>\n
\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u30b9\u30c6\u30fc\u30bf\u30b9\u30d5\u30a3\u30fc\u30c9\u3092\u5b9f\u88c5\u3059\u308b\u305f\u3081\u306e\u6e96\u5099
\napp\/models\/user.rb<\/strong><\/p>\n
# \u8a66\u4f5cfeed\u306e\u5b9a\u7fa9<\/strong>\r\n# \u5b8c\u5168\u306a\u5b9f\u88c5\u306f\u6b21\u7ae0\u306e\u300c\u30e6\u30fc\u30b6\u30fc\u3092\u30d5\u30a9\u30ed\u30fc\u3059\u308b\u300d\u3092\u53c2\u7167<\/strong>\r\ndef feed<\/strong>\r\n  Micropost.where(\"user_id = ?\", id)<\/strong>\r\nend<\/strong><\/pre>\n
\u7591\u554f\u7b26\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u91cd\u8981\u306a\u5f79\u5272\u3092\u2191\u679c\u305f\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
SQL\u30af\u30a8\u30ea\u306b\u4ee3\u5165\u3059\u308b\u524d\u306bid\u304c\u30a8\u30b9\u30b1\u30fc\u30d7\u3055\u308c\u308b\u305f\u3081\u3001SQL\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3(SQL Injection)\u3068\u547c\u3070\u308c\u308b\u6df1\u523b\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30db\u30fc\u30eb\u3092\u907f\u3051\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\n\u3053\u306e\u5834\u5408\u306eid\u5c5e\u6027\u306f\u5358\u306a\u308b\u6574\u6570 (\u3059\u306a\u308f\u3061self.id\u306f\u30e6\u30fc\u30b6\u30fc\u306eid)
\n\u3067\u3042\u308b\u305f\u3081\u5371\u967a\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001
\nSQL\u6587\u306b\u5909\u6570\u3092\u4ee3\u5165\u3059\u308b\u5834\u5408\u306f\u5e38\u306b\u30a8\u30b9\u30b1\u30fc\u30d7\u3059\u308b\u7fd2\u6163\u3092\u305c\u3072\u8eab\u306b\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\u2191\u306e\u30b3\u30fc\u30c9\u306f\u672c\u8cea\u7684\u306b\u2193\u306e\u30b3\u30fc\u30c9\u3068\u540c\u7b49\u3067\u3042\u308b\u3053\u3068\u306b\u6c17\u4ed8\u304f\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n
def feed<\/strong>\r\n  microposts<\/strong>\r\nend<\/strong><\/pre>\n
\u30b5\u30f3\u30d7\u30eb\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u30d5\u30a3\u30fc\u30c9\u6a5f\u80fd\u3092\u5c0e\u5165\u3059\u308b\u305f\u3081\u3001
\n\u30ed\u30b0\u30a4\u30f3\u30e6\u30fc\u30b6\u30fc\u306e\u30d5\u30a3\u30fc\u30c9\u7528\u306b\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570@feed_items\u3092\u8ffd\u52a0\u3057\u3001Home\u30da\u30fc\u30b8\u306b\u306f\u30d5\u30a3\u30fc\u30c9\u7528\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n
home\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u30d5\u30a3\u30fc\u30c9\u306e\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u3092\u8ffd\u52a0\u3059\u308b
\napp\/controllers\/static_pages_controller.rb<\/strong><\/p>\n
class StaticPagesController < ApplicationController<\/strong>\r\n\r\ndef home<\/strong>\r\n  if logged_in?<\/strong>\r\n    @micropost = current_user.microposts.build<\/strong>\r\n    @feed_items = current_user.feed.paginate(page: params[:page])<\/strong>\r\n  end<\/strong>\r\nend<\/strong><\/pre>\n
\u30b9\u30c6\u30fc\u30bf\u30b9\u30d5\u30a3\u30fc\u30c9\u306e\u30d1\u30fc\u30b7\u30e3\u30eb
\napp\/views\/shared\/_feed.html.erb<\/strong><\/p>\n
<% if @feed_items.any? %><\/strong>\r\n <ol class=\"microposts\"><\/strong>\r\n  <%= render @feed_items %><\/strong>\r\n <\/ol><\/strong>\r\n <%= will_paginate @feed_items %><\/strong>\r\n<% end %><\/strong><\/pre>\n
\u3053\u306e\u3068\u304d\u3001@feed_items\u306e\u5404\u8981\u7d20\u304cMicropost\u30af\u30e9\u30b9\u3092\u6301\u3063\u3066\u3044\u305f\u305f\u3081\u3001Rails\u306fMicropost\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u547c\u3073\u51fa\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002
\n\u3053\u306e\u3088\u3046\u306b\u3001Rails\u306f\u5bfe\u5fdc\u3059\u308b\u540d\u524d\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u3001
\n\u6e21\u3055\u308c\u305f\u30ea\u30bd\u30fc\u30b9\u306e\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u5185\u304b\u3089\u63a2\u3057\u306b\u3044\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n
app\/views\/microposts\/_micropost.html.erb<\/strong><\/pre>\n
Home\u30da\u30fc\u30b8\u306b\u30b9\u30c6\u30fc\u30bf\u30b9\u30d5\u30a3\u30fc\u30c9\u3092\u8ffd\u52a0\u3059\u308b
\napp\/views\/static_pages\/home.html.erb<\/strong><\/p>\n
<% if logged_in? %><\/strong>\r\n <div class=\"row\"><\/strong>\r\n  <aside class=\"col-md-4\"><\/strong>\r\n   <section class=\"user_info\"><\/strong>\r\n    <%= render 'shared\/user_info' %><\/strong>\r\n   <\/section><\/strong>\r\n   <section class=\"micropost_form\"><\/strong>\r\n    <%= render 'shared\/micropost_form' %><\/strong>\r\n   <\/section><\/strong>\r\n  <\/aside><\/strong>\r\n<div class=\"col-md-8\"><\/strong>\r\n <h3>Micropost Feed<\/h3><\/strong>\r\n  <%= render 'shared\/feed' %><\/strong>\r\n <\/div><\/strong>\r\n<\/div><\/strong>\r\n<% else %>\r\n#\u5f8c\u7565\r\n<% end %><\/strong><\/pre>\n
\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u6295\u7a3f\u304c\u5931\u6557\u3059\u308b\u3068\u3001Home\u30da\u30fc\u30b8\u306f
\n@feed_items\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u3092\u671f\u5f85\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u73fe\u72b6\u3067\u306f\u58ca\u308c\u3066\u3057\u307e\u3044\u307e\u3059\u3002<\/p>\n
\u6700\u3082\u7c21\u5358\u306a\u89e3\u6c7a\u65b9\u6cd5\u306f\u3001\u7a7a\u306e\u914d\u5217\u3092\u6e21\u3057\u3066\u304a\u304f\u3053\u3068\u3067\u3059\u3002
\n\u6b8b\u5ff5\u3067\u3059\u304c\u3001\u3053\u306e\u5834\u5408\u306f\u30da\u30fc\u30b8\u5206\u5272\u3055\u308c\u305f\u30d5\u30a3\u30fc\u30c9\u3092\u8fd4\u3057\u3066\u3082\u3046\u307e\u304f\u52d5\u304d\u307e\u305b\u3093\u3002<\/p>\n
create<\/strong><\/code>\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u7a7a\u306e@feed_items<\/code>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u3092\u8ffd\u52a0\u3059\u308bapp\/controllers\/microposts_controller.rb<\/code><\/strong><\/span><\/div>\n
\n
\n
class<\/span> MicropostsController<\/span> <<\/span> ApplicationController<\/span>\r\n  before_action<\/span> :logged_in_user<\/span>,<\/span> only<\/span>:<\/span> [<\/span>:create<\/span>,<\/span> :destroy<\/span>]<\/span>\r\n\r\n  def<\/span> create<\/span>\r\n    @micropost<\/span> =<\/span> current_user<\/span>.<\/span>microposts<\/span>.<\/span>build<\/span>(<\/span>micropost_params<\/span>)<\/span>\r\n    if<\/span> @micropost<\/span>.<\/span>save<\/span>\r\n      flash<\/span>[<\/span>:success<\/span>]<\/span> =<\/span> \"Micropost created!\"<\/span>\r\n      redirect_to<\/span> root_url<\/span>\r\n    else<\/span>\r\n      @feed_items<\/span> =<\/span> []<\/span>\r\n<\/span>      render<\/span> 'static_pages\/home'<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\n\r\n  def<\/span> destroy<\/span>\r\n  end<\/span>\r\n\r\n  private<\/span>\r\n\r\n    def<\/span> micropost_params<\/span>\r\n      params<\/span>.<\/span>require<\/span>(<\/span>:micropost<\/span>)<\/span>.<\/span>permit<\/span>(<\/span>:content<\/span>)<\/span>\r\n    end<\/span>\r\nend<\/span><\/strong><\/pre>\n<\/div>\n<\/div>\n
\u6f14\u7fd2<\/h3>\n
1:\u65b0\u3057\u304f\u5b9f\u88c5\u3057\u305f\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u306e\u6295\u7a3f\u30d5\u30a9\u30fc\u30e0\u3092\u4f7f\u3063\u3066\u3001
\n\u5b9f\u969b\u306b\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u6295\u7a3f\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\nRails\u30b5\u30fc\u30d0\u30fc\u306e\u30ed\u30b0\u5185\u306b\u3042\u308bINSERT\u6587\u3067\u306f\u3001
\n\u3069\u3046\u3044\u3063\u305f\u5185\u5bb9\u3092\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306b\u9001\u3063\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u304b? \u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
INSERT INTO \"microposts\" (\"content\", \"user_id\", \"created_at\", \"updated_at\") VALUES (?, ?, ?, ?) [[\"content\", \"tet\\r\\n\"], [\"user_id\", 1], [\"created_at\", \"2020-04-10 09:48:54.428673\"], [\"updated_at\", \"2020-04-10 09:48:54.428673\"]]<\/strong><\/pre>\n
2:\u30b3\u30f3\u30bd\u30fc\u30eb\u3092\u958b\u304d\u3001user\u5909\u6570\u306b\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u4e0a\u306e\u6700\u521d\u306e\u30e6\u30fc\u30b6\u30fc\u3092
\n\u4ee3\u5165\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n\u305d\u306e\u5f8c\u3001Micropost.where(“user_id = ?”, user.id)\u3068user.microposts\u3001\u305d\u3057\u3066user.feed\u3092\u305d\u308c\u305e\u308c\u5b9f\u884c\u3057\u3066\u307f\u3066\u3001
\n\u5b9f\u884c\u7d50\u679c\u304c\u3059\u3079\u3066\u540c\u3058\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002
\n\u30d2\u30f3\u30c8: ==\u3067\u6bd4\u8f03\u3059\u308b\u3068\u7d50\u679c\u304c\u540c\u3058\u304b\u3069\u3046\u304b\u7c21\u5358\u306b\u5224\u5225\u3067\u304d\u307e\u3059\u3002<\/p>\n
user = User.first<\/strong>\r\nMicropost.where(\"user_id = ?\", user.id) == user.microposts<\/strong>\r\nMicropost Load (1.1ms) SELECT \"microposts\".* FROM \"microposts\" WHERE \"microposts\".\"user_id\" = ? ORDER BY \"microposts\".\"created_at\" DESC [[\"user_id\", 1]]<\/strong>\r\nMicropost Load (0.3ms) SELECT \"microposts\".* FROM \"microposts\" WHERE (user_id = 1) ORDER BY \"microposts\".\"created_at\" DESC<\/strong>\r\n=> true<\/strong>\r\n>> user.feed == user.microposts<\/strong><\/pre>\n
13.4\u306b\u7d9a\u304f<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u305d\u306e13.2\u304b\u3089\u7d9a\u304f 13.3 \u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u64cd\u4f5c\u3059\u308b \u6b21\u306fWeb\u7d4c\u7531\u3067\u305d\u308c\u3089\u3092\u4f5c\u6210\u3059\u308b\u305f\u3081\u306e\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306b \u53d6\u308a\u304b\u304b\u308a\u307e\u3057\u3087\u3046\u3002\u3053\u306e\u7bc0\u3067\u306f\u3001\u30b9\u30c6\u30fc\u30bf\u30b9\u30d5\u30a3\u30fc\u30c9 (\u7b2c14\u7ae0\u3067\u5b8c\u6210\u3055\u305b\u307e\u3059) \u306e\u6700\u521d\u306e\u30d2\u30f3\u30c8\u3092\u304a\u898b\u305b\u3057 […]<\/p>\n","protected":false},"author":1,"featured_media":2764,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_monsterinsights_skip_tracking":false,"_monsterinsights_sitenote_active":false,"_monsterinsights_sitenote_note":"","_monsterinsights_sitenote_category":0,"footnotes":""},"categories":[27,13],"tags":[],"class_list":["post-3082","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-programming-note","category-rails"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/3082","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/comments?post=3082"}],"version-history":[{"count":7,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/3082\/revisions"}],"predecessor-version":[{"id":4579,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/3082\/revisions\/4579"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/media\/2764"}],"wp:attachment":[{"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/media?parent=3082"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/categories?post=3082"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/tags?post=3082"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}