{"id":3121,"date":"2021-12-10T13:38:00","date_gmt":"2021-12-10T04:38:00","guid":{"rendered":"https:\/\/suzutukiblog.com\/?p=3121"},"modified":"2022-01-23T07:54:00","modified_gmt":"2022-01-22T22:54:00","slug":"rails-tutorial14-25","status":"publish","type":"post","link":"https:\/\/suzutukiblog.com\/index.php\/2021\/12\/10\/rails-tutorial14-25\/","title":{"rendered":"Rails-tutorial\u306e\u307e\u3068\u308114.25(Following\u3068Followers\u30da\u30fc\u30b8)"},"content":{"rendered":"

\u305d\u306e14.2\u304b\u3089\u7d9a\u304f<\/a><\/p>\n

14.2.3 [Following] \u3068 [Followers] \u30da\u30fc\u30b8<\/h3>\n

\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u8868\u793a\u3059\u308b\u30da\u30fc\u30b8\u3068\u3001\u30d5\u30a9\u30ed\u30ef\u30fc\u3092\u8868\u793a\u3059\u308b\u30da\u30fc\u30b8\u306f\u3001
\n\u3044\u305a\u308c\u3082\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3068\u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u30da\u30fc\u30b8\u3092\u5408\u308f\u305b\u305f\u3088\u3046\u306a\u4f5c\u308a\u306b\u306a\u308b\u3068\u3044\u3046\u70b9\u3067\u4f3c\u3066\u3044\u307e\u3059\u3002
\n\u3069\u3061\u3089\u306b\u3082\u30d5\u30a9\u30ed\u30fc\u306e\u7d71\u8a08\u60c5\u5831\u306a\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u60c5\u5831\u3092
\n\u8868\u793a\u3059\u308b\u30b5\u30a4\u30c9\u30d0\u30fc\u3068\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30b9\u30c8\u304c\u3042\u308a\u307e\u3059\u3002
\n\u3055\u3089\u306b\u3001\u30b5\u30a4\u30c9\u30d0\u30fc\u306b\u306f\u5c0f\u3055\u3081\u306e\u30e6\u30fc\u30b6\u30fc\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u753b\u50cf\u306e\u30ea\u30f3\u30af\u3092\u683c\u5b50\u72b6\u306b\u4e26\u3079\u3066\u8868\u793a\u3059\u308b\u4e88\u5b9a\u3067\u3059\u3002<\/p>\n

\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30f3\u30af\u3068\u30d5\u30a9\u30ed\u30ef\u30fc\u306e\u30ea\u30f3\u30af\u3092
\n\u52d5\u304f\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067Twitter\u306b\u5023\u3063\u3066\u3001
\n\u3069\u3061\u3089\u306e\u30da\u30fc\u30b8\u3067\u3082\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30b0\u30a4\u30f3\u3092\u8981\u6c42\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n

\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u306e\u30ea\u30f3\u30af\u3068\u30d5\u30a9\u30ed\u30ef\u30fc\u306e\u30ea\u30f3\u30af\u3092\u52d5\u304f\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002 Twitter\u306b\u5023\u3063\u3066\u3001\u3069\u3061\u3089\u306e\u30da\u30fc\u30b8\u3067\u3082\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30b0\u30a4\u30f3\u3092\u8981\u6c42\u3059\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u305d\u3053\u3067\u524d\u56de\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3068\u540c\u69d8\u306b\u3001\u307e\u305a\u306f\u30c6\u30b9\u30c8\u304b\u3089\u66f8\u3044\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n

\u30d5\u30a9\u30ed\u30fc\/\u30d5\u30a9\u30ed\u30ef\u30fc\u30da\u30fc\u30b8\u306e\u8a8d\u53ef\u3092\u30c6\u30b9\u30c8\u3059\u308b red
\ntest\/controllers\/users_controller_test.rb<\/strong><\/p>\n

require 'test_helper'<\/strong>\r\n\r\nclass UsersControllerTest < ActionDispatch::IntegrationTest<\/strong>\r\n\r\n def setup<\/strong>\r\n  @user = users(:michael)<\/strong>\r\n  @other_user = users(:archer)<\/strong>\r\n end<\/strong>\r\n.<\/strong>\r\n.<\/strong>\r\n.<\/strong>\r\n test \"should redirect following when not logged in\" do<\/strong>\r\n  get following_user_path(@user)<\/strong>\r\n  assert_redirected_to login_url<\/strong>\r\n end<\/strong>\r\n\r\n test \"should redirect followers when not logged in\" do<\/strong>\r\n  get followers_user_path(@user)<\/strong>\r\n  assert_redirected_to login_url<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
\u3053\u306e\u5b9f\u88c5\u306b\u306f\uff11\u3064\u3060\u3051\u30c8\u30ea\u30c3\u30ad\u30fc\u306a\u90e8\u5206\u304c\u3042\u308a\u307e\u3059\u3002
\n\u305d\u308c\u306fUsers\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306b2\u3064\u306e\u65b0\u3057\u3044\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002<\/p>\n
\u5b9a\u7fa9\u3057\u305f2\u3064\u306e\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u3082\u3068\u3065\u3044\u3066\u304a\u308a\u3001\u3053\u308c\u3089\u306f\u305d\u308c\u305e\u308cfollowing\u304a\u3088\u3073followers\u3068\u547c\u3076\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
\n\u305d\u308c\u305e\u308c\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30bf\u30a4\u30c8\u30eb\u3092\u8a2d\u5b9a\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u3092\u691c\u7d22\u3057\u3001@user.following\u307e\u305f\u306f@user.followers\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u3001
\n\u30da\u30fc\u30b8\u30cd\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u306a\u3063\u3066\u3001\u30da\u30fc\u30b8\u3092\u51fa\u529b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n
following\u30a2\u30af\u30b7\u30e7\u30f3\u3068followers\u30a2\u30af\u30b7\u30e7\u30f3 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                                        :following<\/span>,<\/span> :followers<\/span>]<\/span>\r\n<\/span>  .<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\n  def<\/span> following<\/span>\r\n    @title<\/span> =<\/span> \"Following\"<\/span>\r\n    @user<\/span>  =<\/span> User<\/span>.<\/span>find<\/span>(<\/span>params<\/span>[<\/span>:id<\/span>]<\/span>)<\/span>\r\n    @users<\/span> =<\/span> @user<\/span>.<\/span>following<\/span>.<\/span>paginate<\/span>(<\/span>page<\/span>:<\/span> params<\/span>[<\/span>:page<\/span>]<\/span>)<\/span>\r\n    render<\/span> 'show_follow'<\/span>\r\n  end<\/span>\r\n\r\n  def<\/span> followers<\/span>\r\n    @title<\/span> =<\/span> \"Followers\"<\/span>\r\n    @user<\/span>  =<\/span> User<\/span>.<\/span>find<\/span>(<\/span>params<\/span>[<\/span>:id<\/span>]<\/span>)<\/span>\r\n    @users<\/span> =<\/span> @user<\/span>.<\/span>followers<\/span>.<\/span>paginate<\/span>(<\/span>page<\/span>:<\/span> params<\/span>[<\/span>:page<\/span>]<\/span>)<\/span>\r\n    render<\/span> 'show_follow'<\/span>\r\n  end<\/span>\r\n\r\n  private<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\nend<\/span><\/strong><\/pre>\n
Rails\u306f\u6163\u7fd2\u306b\u5f93\u3063\u3066\u3001\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u5bfe\u5fdc\u3059\u308b\u30d3\u30e5\u30fc\u3092\u6697\u9ed9\u7684\u306b\u547c\u3073\u51fa\u3057\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u3001show\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u6700\u5f8c\u3067show.html.erb\u3092\u547c\u3073\u51fa\u3059\u3001\u3068\u3044\u3063\u305f\u5177\u5408\u3067\u3059\u3002<\/p>\n
render\u3092\u660e\u793a\u7684\u306b\u547c\u3073\u51fa\u3057\u3001show_follow\u3068\u3044\u3046\u540c\u3058\u30d3\u30e5\u30fc\u3092\u51fa\u529b\u3057\u3066\u3044\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u4f5c\u6210\u304c\u5fc5\u8981\u306a\u30d3\u30e5\u30fc\u306f\u3053\u308c1\u3064\u3067\u3059\u3002
\nrender\u3067\u547c\u3073\u51fa\u3057\u3066\u3044\u308b\u30d3\u30e5\u30fc\u304c\u540c\u3058\u3067\u3042\u308b\u7406\u7531\u306f\u3001
\nERb\u306f\u3069\u3061\u3089\u306e\u5834\u5408\u3067\u3082\u307b\u307c\u540c\u3058\u3067\u3042\u308a\u3001\u3067\u4e21\u65b9\u306e\u5834\u5408\u3092\u30ab\u30d0\u30fc\u3067\u304d\u308b\u305f\u3081\u3067\u3059\u3002<\/p>\n
\u2193\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3068\u30d5\u30a9\u30ed\u30ef\u30fc\u306e\u4e21\u65b9\u3092\u8868\u793a\u3059\u308bshow_follow\u30d3\u30e5\u30fc green
\napp\/views\/users\/show_follow.html.erb<\/strong><\/p>\n
<% provide(:title, @title) %><\/strong>\r\n<div class=\"row\"><\/strong>\r\n <aside class=\"col-md-4\"><\/strong>\r\n  <section class=\"user_info\"><\/strong>\r\n   <%= gravatar_for @user %><\/strong>\r\n   <h1><%= @user.name %><\/h1><\/strong>\r\n   <span><%= link_to \"view my profile\", @user %><\/span><\/strong>\r\n   <span><b>Microposts:<\/b> <%= @user.microposts.count %><\/span><\/strong>\r\n  <\/section><\/strong>\r\n <section class=\"stats\"><\/strong>\r\n  <%= render 'shared\/stats' %><\/strong>\r\n   <% if @users.any? %><\/strong>\r\n    <div class=\"user_avatars\"><\/strong>\r\n     <% @users.each do |user| %><\/strong>\r\n      <%= link_to gravatar_for(user, size: 30), user %><\/strong>\r\n   <% end %><\/strong>\r\n    <\/div><\/strong>\r\n   <% end %><\/strong>\r\n  <\/section><\/strong>\r\n <\/aside><\/strong>\r\n<div class=\"col-md-8\"><\/strong>\r\n <h3><%= @title %><\/h3><\/strong>\r\n  <% if @users.any? %><\/strong>\r\n   <ul class=\"users follow\"><\/strong>\r\n    <%= render @users %><\/strong>\r\n   <\/ul><\/strong>\r\n  <%= will_paginate %><\/strong>\r\n <% end %><\/strong>\r\n <\/div><\/strong>\r\n<\/div><\/strong><\/pre>\n
 <\/p>\n
following\u3068followers\u30a2\u30af\u30b7\u30e7\u30f3\u306f\u3001\uff12\u901a\u308a\u306e\u65b9\u6cd5\u3067\u30d3\u30e5\u30fc\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002\u201cfollowing\u201d\u3092\u3068\u304a\u3063\u3066\u63cf\u753b\u3057\u305f\u30d3\u30e5\u30fc\u3092\u2193\u306b\u3001
\n\u201cfollowers\u201d\u3092\u3068\u304a\u3063\u3066\u63cf\u753b\u3057\u305f\u30d3\u30e5\u30fc\u3092\u2193\u306b\u793a\u3057\u307e\u3059\u3002
\n\u3053\u306e\u3068\u304d\u3001\u4e0a\u306e\u30b3\u30fc\u30c9\u3067\u306f\u73fe\u5728\u306e\u30e6\u30fc\u30b6\u30fc\u3092\u4e00\u5207\u4f7f\u3063\u3066\u3044\u306a\u3044\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u306e\u30d5\u30a9\u30ed\u30ef\u30fc\u4e00\u89a7\u30da\u30fc\u30b8\u3082\u3046\u307e\u304f\u52d5\u304d\u307e\u3059\u3002<\/p>\n
\"\"<\/p>\n
show_follow\u306e\u63cf\u753b\u7d50\u679c\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u3001\u7d71\u5408\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u3044\u304d\u307e\u3059\u3002\u305f\u3060\u3057\u4eca\u56de\u306e\u7d71\u5408\u30c6\u30b9\u30c8\u306f\u57fa\u672c\u7684\u306a\u30c6\u30b9\u30c8\u3060\u3051\u306b\u7559\u3081\u3066\u304a\u308a\u3001
\n\u7db2\u7f85\u7684\u306a\u30c6\u30b9\u30c8\u306b\u306f\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n
HTML\u69cb\u9020\u3092\u7db2\u7f85\u7684\u306b\u30c1\u30a7\u30c3\u30af\u3059\u308b\u30c6\u30b9\u30c8\u306f\u58ca\u308c\u3084\u3059\u304f\u3001
\n\u751f\u7523\u6027\u3092\u9006\u306b\u843d\u3068\u3057\u304b\u306d\u306a\u3044\u304b\u3089\u3067\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u4eca\u56de\u306f\u3001
\n\u6b63\u3057\u3044\u6570\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u3068\u3001
\n\u6b63\u3057\u3044URL\u304c\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u306e\uff12\u3064\u306e\u30c6\u30b9\u30c8\u3092\u66f8\u304d\u307e\u3059\u3002<\/p>\n
\u7d71\u5408\u30c6\u30b9\u30c8\u3092\u751f\u6210\u3059\u308b\u3068\u3053\u308d\u304b\u3089\u59cb\u3081\u307e\u3059\u3002<\/p>\n
rails generate integration_test following<\/strong><\/pre>\n
\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u30b7\u30c3\u30d7\u7528\u306efixture\u306b\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3057\u307e\u3057\u3087\u3046\u3002
\n\u6b21\u306e\u3088\u3046\u306b\u66f8\u304f\u3053\u3068\u3067\u3001<\/p>\n
orange:<\/strong>\r\ncontent: \"I just ate an orange!\"<\/strong>\r\ncreated_at: <%= 10.minutes.ago %><\/strong>\r\nuser: michael<\/strong><\/pre>\n
\u30e6\u30fc\u30b6\u30fc\u3068\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u3092\u95a2\u9023\u4ed8\u3051\u3067\u304d\u305f\u3053\u3068\u3092\u601d\u3044\u51fa\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u4e0a\u306e\u30b3\u30fc\u30c9\u3067\u306f\u30e6\u30fc\u30b6\u30fc\u540d\u3092\u6b21\u306e\u3088\u3046\u306b\u66f8\u3044\u3066\u3044\u307e\u3059\u304c\u3001<\/p>\n
user: michael<\/p>\n
\u3053\u308c\u306f\u5185\u90e8\u7684\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306b\u81ea\u52d5\u7684\u306b\u5909\u63db\u3055\u308c\u307e\u3059\u3002<\/p>\n
user_id: 1<\/p>\n
\u3053\u306e\u4f8b\u3092\u53c2\u8003\u306b\u3057\u3066Relationship\u7528\u306efixture\u306b\u30c6\u30b9\u30c8\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3059\u308b\u3068\u3001
\n\u2193\u306e\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
following\/follower\u3092\u30c6\u30b9\u30c8\u3059\u308b\u305f\u3081\u306e\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u30b7\u30c3\u30d7\u7528fixture
\ntest\/fixtures\/relationships.yml<\/strong><\/p>\n
one:<\/strong>\r\nfollower: michael<\/strong>\r\nfollowed: lana<\/strong>\r\n\r\ntwo:<\/strong>\r\nfollower: michael<\/strong>\r\nfollowed: malory<\/strong>\r\n\r\nthree:<\/strong>\r\nfollower: lana<\/strong>\r\nfollowed: michael<\/strong>\r\n\r\nfour:<\/strong>\r\nfollower: archer<\/strong>\r\nfollowed: michael<\/strong><\/pre>\n
\u524d\u534a\u306e2\u3064\u3067Michael\u304cLana\u3068Malory\u3092\u30d5\u30a9\u30ed\u30fc\u3057\u3001\u5f8c\u534a\u306e2\u3064\u3067Lana\u3068Archer\u304cMichael\u3092\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u3042\u3068\u306f\u3001\u6b63\u3057\u3044\u6570\u304b\u3069\u3046\u304b\u3092\u78ba\u8a8d\u3059\u308b\u305f\u3081\u306b\u3001assert_match\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u753b\u9762\u306e\u30de\u30a4\u30af\u30ed\u30dd\u30b9\u30c8\u6570\u3092\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002
\n\u3055\u3089\u306b\u3001\u6b63\u3057\u3044URL\u304b\u3069\u3046\u304b\u3092\u30c6\u30b9\u30c8\u3059\u308b\u30b3\u30fc\u30c9\u3082\u52a0\u3048\u308b\u3068\u3001<\/p>\n
following\/follower\u30da\u30fc\u30b8\u306e\u30c6\u30b9\u30c8 green
\ntest\/integration\/following_test.rb<\/strong><\/p>\n
require 'test_helper'<\/strong>\r\n\r\nclass FollowingTest < ActionDispatch::IntegrationTest<\/strong>\r\n\r\n def setup<\/strong>\r\n   @user = users(:michael)<\/strong>\r\n   log_in_as(@user)<\/strong>\r\n end<\/strong>\r\n\r\ntest \"following page\" do<\/strong>\r\n get following_user_path(@user)<\/strong>\r\n assert_not @user.following.empty?<\/strong>\r\n assert_match @user.following.count.to_s, response.body<\/strong>\r\n @user.following.each do |user|<\/strong>\r\n  assert_select \"a[href=?]\", user_path(user)<\/strong>\r\n end<\/strong>\r\nend<\/strong>\r\n\r\ntest \"followers page\" do<\/strong>\r\n get followers_user_path(@user)<\/strong>\r\n assert_not @user.followers.empty?<\/strong>\r\n assert_match @user.followers.count.to_s, response.body<\/strong>\r\n  @user.followers.each do |user|<\/strong>\r\n   assert_select \"a[href=?]\", user_path(user)<\/strong>\r\n  end<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
assert_not @user.following.empty?<\/strong><\/pre>\n
\u3053\u306e\u30b3\u30fc\u30c9\u306f\u6b21\u306e\u30b3\u30fc\u30c9\u3092\u78ba\u304b\u3081\u308b\u305f\u3081\u306e\u30c6\u30b9\u30c8\u3067\u3042\u3063\u3066\u3001<\/p>\n
@user.following.each do |user|<\/strong>\r\n  assert_select \"a[href=?]\", user_path(user)<\/strong>\r\nend<\/strong><\/pre>\n
\u3082\u3057@user.following.empty?\u306e\u7d50\u679c\u304ctrue\u3067\u3042\u308c\u3070\u3001
\nassert_select\u5185\u306e\u30d6\u30ed\u30c3\u30af\u304c\u5b9f\u884c\u3055\u308c\u306a\u304f\u306a\u308b\u305f\u3081\u3001
\n\u305d\u306e\u5834\u5408\u306b\u304a\u3044\u3066\u30c6\u30b9\u30c8\u304c\u9069\u5207\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30e2\u30c7\u30eb\u3092\u78ba\u8a8d\u3067\u304d\u306a\u304f\u306a\u308b\u3053\u3068\u3092\u9632\u3044\u3067\u3044\u307e\u3059\u3002<\/p>\n
\u6f14\u7fd2<\/h3>\n
1:\u30d6\u30e9\u30a6\u30b6\u304b\u3089 \/users\/1\/followers \u3068 \/users\/1\/following \u3092\u958b\u304d\u3001
\n\u305d\u308c\u305e\u308c\u304c\u9069\u5207\u306b\u8868\u793a\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n\u30b5\u30a4\u30c9\u30d0\u30fc\u306b\u3042\u308b\u753b\u50cf\u306f\u3001\u30ea\u30f3\u30af\u3068\u3057\u3066\u3046\u307e\u304f\u6a5f\u80fd\u3057\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u304b?<\/p>\n
\u6a5f\u80fd\u3057\u3066\u3044\u308b<\/p>\n
2:assert_select\u306b\u95a2\u9023\u3059\u308b\u30b3\u30fc\u30c9\u3092\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\u3057\u3066\u307f\u3066\u3001
\n\u30c6\u30b9\u30c8\u304c\u6b63\u3057\u304f red \u306b\u5909\u308f\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
#\u4ee5\u4e0b\u3092\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\u3059\u308b\r\n<% @users.each do |user| %><\/strong>\r\n<%= #link_to gravatar_for(user, size: 30), user %><\/strong>\r\n<% end %><\/strong><\/pre>\n
14.2.4 [Follow] \u30dc\u30bf\u30f3 (\u57fa\u672c\u7de8)<\/h3>\n
\u30d3\u30e5\u30fc\u304c\u6574\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u3044\u3088\u3044\u3088 [Follow] \/ [Unfollow] \u30dc\u30bf\u30f3\u3092
\n\u52d5\u4f5c\u3055\u305b\u307e\u3057\u3087\u3046\u3002\u30d5\u30a9\u30ed\u30fc\u3068\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u306f\u305d\u308c\u305e\u308c\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u30b7\u30c3\u30d7\u306e\u4f5c\u6210\u3068\u524a\u9664\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u305f\u3081\u3001\u307e\u305a\u306fRelationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u304c\u5fc5\u8981\u3067\u3059\u3002
\n\u3044\u3064\u3082\u306e\u3088\u3046\u306b\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u751f\u6210\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n
rails generate controller Relationships<\/strong><\/pre>\n
Relationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u3067\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u3059\u308b\u3053\u3068\u306f
\n\u305d\u3053\u307e\u3067\u96e3\u3057\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u3057\u304b\u3057\u3001\u524d\u56de\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u306e\u3068\u304d\u3068\u540c\u69d8\u306b\u6700\u521d\u306b\u30c6\u30b9\u30c8\u3092\u66f8\u304d\u3001
\n\u305d\u308c\u3092\u30d1\u30b9\u3059\u308b\u3088\u3046\u306b\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30e2\u30c7\u30eb\u3092
\n\u78ba\u7acb\u3055\u305b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u304d\u3001
\n\u30ed\u30b0\u30a4\u30f3\u6e08\u307f\u306e\u30e6\u30fc\u30b6\u30fc\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002
\n\u3082\u3057\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u30ed\u30b0\u30a4\u30f3\u30da\u30fc\u30b8\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u308b\u306e\u3067\u3001Relationship\u306e\u30ab\u30a6\u30f3\u30c8\u304c\u5909\u308f\u3063\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059<\/p>\n
\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u30b7\u30c3\u30d7\u306e\u57fa\u672c\u7684\u306a\u30a2\u30af\u30bb\u30b9\u5236\u5fa1\u306b\u5bfe\u3059\u308b\u30c6\u30b9\u30c8
\ntest\/controllers\/relationships_controller_test.rb<\/strong><\/p>\n
require<\/span> 'test_helper'<\/span>\r\n\r\nclass<\/span> RelationshipsControllerTest<\/span> <<\/span> ActionDispatch<\/span>::<\/span>IntegrationTest<\/span>\r\n\r\n  test<\/span> \"create should require logged-in user\"<\/span> do<\/span>\r\n    assert_no_difference<\/span> 'Relationship.count'<\/span> do<\/span>\r\n      post<\/span> relationships_path<\/span>\r\n    end<\/span>\r\n    assert_redirected_to<\/span> login_url<\/span>\r\n  end<\/span>\r\n\r\n  test<\/span> \"destroy should require logged-in user\"<\/span> do<\/span>\r\n    assert_no_difference<\/span> 'Relationship.count'<\/span> do<\/span>\r\n      delete<\/span> relationship_path<\/span>(<\/span>relationships<\/span>(<\/span>:one<\/span>))<\/span>\r\n    end<\/span>\r\n    assert_redirected_to<\/span> login_url<\/span>\r\n  end<\/span>\r\nend<\/span><\/strong><\/pre>\n
\u30c6\u30b9\u30c8\u3092\u30d1\u30b9\u3055\u305b\u308b\u305f\u3081\u306b\u3001logged_in_user\u30d5\u30a3\u30eb\u30bf\u30fc\u3092
\nRelationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u5bfe\u3057\u3066\u8ffd\u52a0\u3057\u307e\u3059<\/p>\n
\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u30b7\u30c3\u30d7\u306e\u30a2\u30af\u30bb\u30b9\u5236\u5fa1
\napp\/controllers\/relationships_controller.rb<\/strong><\/p>\n
class<\/span> RelationshipsController<\/span> <<\/span> ApplicationController<\/span>\r\n  before_action<\/span> :logged_in_user<\/span>\r\n\r\n  def<\/span> create<\/span>\r\n  end<\/span>\r\n\r\n  def<\/span> destroy<\/span>\r\n  end<\/span>\r\nend<\/span><\/strong><\/pre>\n
[Follow] \/ [Unfollow] \u30dc\u30bf\u30f3\u3092\u52d5\u4f5c\u3055\u305b\u308b\u305f\u3081\u306b\u306f\u3001
\n\u30d5\u30a9\u30fc\u30e0\u304b\u3089\u9001\u4fe1\u3055\u308c\u305f\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u4f7f\u3063\u3066\u3001
\nfollowed_id\u306b\u5bfe\u5fdc\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u898b\u3064\u3051\u3066\u304f\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
\n\u305d\u306e\u5f8c\u3001\u898b\u3064\u3051\u3066\u304d\u305f\u30e6\u30fc\u30b6\u30fc\u306b\u5bfe\u3057\u3066\u9069\u5207\u306bfollow\/unfollow\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
Relationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9app\/controllers\/relationships_controller.rb<\/code><\/strong><\/span><\/div>\n
\n
\n
class<\/span> RelationshipsController<\/span> <<\/span> ApplicationController<\/span>\r\n  before_action<\/span> :logged_in_user<\/span>\r\n\r\n  def<\/span> create<\/span>\r\n    user<\/span> =<\/span> User<\/span>.<\/span>find<\/span>(<\/span>params<\/span>[<\/span>:followed_id<\/span>]<\/span>)<\/span>\r\n<\/span>    current_user<\/span>.<\/span>follow<\/span>(<\/span>user<\/span>)<\/span>\r\n<\/span>    redirect_to<\/span> user<\/span>\r\n<\/span>  end<\/span>\r\n\r\n  def<\/span> destroy<\/span>\r\n    user<\/span> =<\/span> Relationship<\/span>.<\/span>find<\/span>(<\/span>params<\/span>[<\/span>:id<\/span>]<\/span>)<\/span>.<\/span>followed<\/span>\r\n<\/span>    current_user<\/span>.<\/span>unfollow<\/span>(<\/span>user<\/span>)<\/span>\r\n<\/span>    redirect_to<\/span> user<\/span>\r\n<\/span>  end<\/span>\r\nend<\/span><\/strong><\/pre>\n<\/div>\n<\/div>\n
\u3082\u3057\u30ed\u30b0\u30a4\u30f3\u3057\u3066\u3044\u306a\u3044\u30e6\u30fc\u30b6\u30fc\u304c (curl<\/code>\u306a\u3069\u306e\u30b3\u30de\u30f3\u30c9\u30e9\u30a4\u30f3\u30c4\u30fc\u30eb\u306a\u3069\u3092\u4f7f\u3063\u3066) \u3053\u308c\u3089\u306e\u30a2\u30af\u30b7\u30e7\u30f3\u306b\u76f4\u63a5\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3088\u3046\u306a\u3053\u3068\u304c\u3042\u308c\u3070\u3001current_user\u306fnil\u306b\u306a\u308a\u3001\u3069\u3061\u3089\u306e\u30e1\u30bd\u30c3\u30c9\u3067\u30822\u884c\u76ee\u3067\u4f8b\u5916\u304c\u767a\u751f\u3057\u307e\u3059\u3002
\n\u30a8\u30e9\u30fc\u306b\u306f\u306a\u308a\u307e\u3059\u304c\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u30c7\u30fc\u30bf\u306b\u5f71\u97ff\u306f\u751f\u3058\u307e\u305b\u3093\u3002<\/p>\n
\u6f14\u7fd2<\/h3>\n
1:\u30d6\u30e9\u30a6\u30b6\u4e0a\u304b\u3089 \/users\/2 \u3092\u958b\u304d\u3001[Follow] \u3068 [Unfollow] \u3092\u5b9f\u884c\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002\u3046\u307e\u304f\u6a5f\u80fd\u3057\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u304b?<\/p>\n
OK<\/p>\n
2:\u5148\u307b\u3069\u306e\u6f14\u7fd2\u3092\u7d42\u3048\u305f\u3089\u3001Rails\u30b5\u30fc\u30d0\u30fc\u306e\u30ed\u30b0\u3092\u898b\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n\u30d5\u30a9\u30ed\u30fc\/\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u304c\u5b9f\u884c\u3055\u308c\u308b\u3068\u3001
\n\u305d\u308c\u305e\u308c\u3069\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u63cf\u753b\u3055\u308c\u3066\u3044\u308b\u3067\u3057\u3087\u3046\u304b?<\/p>\n
\u4e21\u65b9\u3068\u3082 “\/users\/2″\u304c\u63cf\u753b\u3055\u308c\u3066\u3044\u308b<\/p>\n
14.2.5 [Follow] \u30dc\u30bf\u30f3 (Ajax\u7de8)<\/h3>\n
Relationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u306ecreate\u30a2\u30af\u30b7\u30e7\u30f3\u3068destroy\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5358\u306b\u5143\u306e\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3057\u3066\u3044\u307e\u3057\u305f\u3002
\n\u3064\u307e\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3092\u6700\u521d\u306b\u8868\u793a\u3057\u3001
\n\u305d\u308c\u304b\u3089\u30e6\u30fc\u30b6\u30fc\u3092\u30d5\u30a9\u30ed\u30fc\u3057\u3001\u305d\u306e\u5f8c\u3059\u3050\u5143\u306e\u30da\u30fc\u30b8\u306b\u30ea\u30c0\u30a4\u30ec\u30af\u30c8\u3055\u308c\u308b\u3068\u3044\u3046\u6d41\u308c\u306b\u306a\u308a\u307e\u3059\u3002
\n\u30e6\u30fc\u30b6\u30fc\u3092\u30d5\u30a9\u30ed\u30fc\u3057\u305f\u5f8c\u3001\u672c\u5f53\u306b\u305d\u306e\u30da\u30fc\u30b8\u304b\u3089\u96e2\u308c\u3066\u5143\u306e\u30da\u30fc\u30b8\u306b\u623b\u3089\u306a\u3044\u3068\u3044\u3051\u306a\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u306e\u70b9\u3092\u8003\u3048\u306a\u304a\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
Ajax\u3092\u4f7f\u3046\u3053\u3068\u3067\u89e3\u6c7a\u3067\u304d\u307e\u3059\u3002Ajax\u3092\u4f7f\u3048\u3070\u3001
\nWeb\u30da\u30fc\u30b8\u304b\u3089\u30b5\u30fc\u30d0\u30fc\u306b\u300c\u975e\u540c\u671f\u300d\u3067\u3001
\n\u30da\u30fc\u30b8\u3092\u79fb\u52d5\u3059\u308b\u3053\u3068\u306a\u304f\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\nWeb\u30d5\u30a9\u30fc\u30e0\u306bAjax\u3092\u63a1\u7528\u3059\u308b\u306e\u306f\u4eca\u3084\u5f53\u305f\u308a\u524d\u306b\u306a\u308a\u3064\u3064\u3042\u308b\u306e\u3067\u3001Rails\u3067\u3082Ajax\u3092\u7c21\u5358\u306b\u5b9f\u88c5\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\u30d5\u30a9\u30ed\u30fc\u7528\u3068\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u7528\u306e\u30d1\u30fc\u30b7\u30e3\u30eb\u3092\u3053\u308c\u306b\u6cbf\u3063\u3066\u66f4\u65b0\u3059\u308b\u306e\u306f\u7c21\u5358\u3067\u3059\u3002
\n\u6b21\u306e\u30b3\u30fc\u30c9\u304c\u3042\u308b\u3068\u3059\u308b\u3068\u3001<\/p>\n
form_for<\/strong><\/pre>\n
\u4e0a\u306e\u30b3\u30fc\u30c9\u3092\u6b21\u306e\u3088\u3046\u306b\u7f6e\u304d\u63db\u3048\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n
form_for ..., remote: true<\/strong><\/pre>\n
\u305f\u3063\u305f\u3053\u308c\u3060\u3051\u3067\u3001Rails\u306f\u81ea\u52d5\u7684\u306bAjax\u3092\u4f7f\u3046\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002
\n\u5177\u4f53\u7684\u306a\u66f4\u65b0\u306e\u7d50\u679c\u3092\u3001\u2193\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n
Ajax\u3092\u4f7f\u3063\u305f\u30d5\u30a9\u30ed\u30fc\u30d5\u30a9\u30fc\u30e0<\/p>\n
app\/views\/users\/_follow.html.erb<\/code><\/strong><\/p>\n
<%= form_for(current_user.active_relationships.build, <\/strong>remote: true) do |f| %><\/strong><\/pre>\n
Ajax\u3092\u4f7f\u3063\u305f\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u30d5\u30a9\u30fc\u30e0app\/views\/users\/_unfollow.html.erb<\/code><\/strong><\/span><\/div>\n
\n
\n
<%=<\/span> form_for<\/span>(<\/span>current_user<\/span>.<\/span>active_relationships<\/span>.<\/span>find_by<\/span>(<\/span>followed_id<\/span>:<\/span> @user<\/span>.<\/span>id<\/span>),<\/span>\r\n             html<\/span>:<\/span> {<\/span> method<\/span>:<\/span> :delete<\/span> }, <\/span>remote<\/span>:<\/span> true<\/span>)<\/span> do<\/span> |<\/span>f<\/span>|<\/span> %><\/span>\r\n<\/span>  <%=<\/span> f<\/span>.<\/span>submit<\/span> \"Unfollow\"<\/span>,<\/span> class<\/span>:<\/span> \"btn\"<\/span> %><\/span>\r\n<%<\/span> end<\/span> %><\/span><\/strong><\/pre>\n<\/div>\n<\/div>\n
ERb\u306b\u3088\u3063\u3066\u5b9f\u969b\u306b\u751f\u6210\u3055\u308c\u308bHTML<\/p>\n
<form action=\"\/relationships\/117\"<\/strong>\r\nclass=\"edit_relationship\" data-remote=\"true\"<\/strong>\r\nid=\"edit_relationship_117\" method=\"post\"><\/strong>\r\n.<\/strong>\r\n.\r\n.\r\n<\/<\/span>form<\/span>><\/span><\/strong><\/pre>\n
form\u30bf\u30b0\u306e\u5185\u90e8\u3067data-remote=”true”\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002
\n\u3053\u308c\u306f\u3001JavaScript\u306b\u3088\u308b\u30d5\u30a9\u30fc\u30e0\u64cd\u4f5c\u3092\u8a31\u53ef\u3059\u308b\u3053\u3068\u3092Rails\u306b\u77e5\u3089\u305b\u308b\u305f\u3081\u306e\u3082\u306e\u3067\u3059\u3002
\nRails 2\u4ee5\u524d\u3067\u306f\u3001\u5b8c\u5168\u306aJavaScript\u306e\u30b3\u30fc\u30c9\u3092\u633f\u5165\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3057\u305f\u3002
\n\u3057\u304b\u3057\u5148\u307b\u3069\u306e\u4f8b\u3067\u898b\u305f\u3088\u3046\u306b\u3001\u73fe\u5728\u306eRails\u3067\u306fHTML\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u4f7f\u3063\u3066\u7c21\u5358\u306bAjax\u304c\u6271\u3048\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002
\n\u3053\u308c\u306f\u3001JavaScript\u3092\u524d\u9762\u306b\u51fa\u3059\u3079\u304b\u3089\u305a\u3068\u3044\u3046\u54f2\u5b66\u306b\u5f93\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
\u30d5\u30a9\u30fc\u30e0\u306e\u66f4\u65b0\u304c\u7d42\u308f\u3063\u305f\u306e\u3067\u3001
\n\u4eca\u5ea6\u306f\u3053\u308c\u306b\u5bfe\u5fdc\u3059\u308bRelationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3092\u6539\u9020\u3057\u3066\u3001
\nAjax\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5fdc\u7b54\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3057\u3087\u3046\u3002
\n\u3053\u3046\u3044\u3063\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u7a2e\u985e\u306b\u3088\u3063\u3066\u5fdc\u7b54\u3092\u5834\u5408\u5206\u3051\u3059\u308b\u3068\u304d\u306f\u3001
\nrespond_to\u30e1\u30bd\u30c3\u30c9\u3068\u3044\u3046\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3044\u307e\u3059\u3002<\/p>\n
respond_to do |format|<\/strong>\r\n  format.html { redirect_to user }<\/strong>\r\n  format.js<\/strong>\r\nend<\/strong><\/pre>\n
\u4e0a\u306e(\u30d6\u30ed\u30c3\u30af\u5185\u306e)\u30b3\u30fc\u30c9\u306e\u3046\u3061\u3001
\n\u3044\u305a\u308c\u304b\u306e1\u884c\u304c\u5b9f\u884c\u3055\u308c\u308b\u3068\u3044\u3046\u70b9\u304c\u91cd\u8981\u3067\u3059
\n(\u3053\u306e\u305f\u3081respond_to\u30e1\u30bd\u30c3\u30c9\u306f\u3001\u4e0a\u304b\u3089\u9806\u306b\u5b9f\u884c\u3059\u308b\u9010\u6b21\u51e6\u7406\u3068\u3044\u3046\u3088\u308a\u3001if\u6587\u3092\u4f7f\u3063\u305f\u5206\u5c90\u51e6\u7406\u306b\u8fd1\u3044\u30a4\u30e1\u30fc\u30b8\u3067\u3059)\u3002<\/p>\n
Relationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067Ajax\u306b\u5bfe\u5fdc\u3055\u305b\u308b\u305f\u3081\u306b\u3001
\nrespond_to\u30e1\u30bd\u30c3\u30c9\u3092create\u30a2\u30af\u30b7\u30e7\u30f3\u3068destroy\u30a2\u30af\u30b7\u30e7\u30f3
\n\u306b\u305d\u308c\u305e\u308c\u8ffd\u52a0\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u5909\u66f4\u306e\u7d50\u679c\u3092\u2193\u306b\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u3068\u304d\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u30ed\u30fc\u30ab\u30eb\u5909\u6570 (user)\u3092\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570 (@user) \u306b\u5909\u66f4\u3057\u305f\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002
\n\u3053\u308c\u306f\u3001\u524d\u306e\u3068\u304d\u306f\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u306f\u5fc5\u8981\u306a\u304b\u3063\u305f\u306e\u3067\u3059\u304c\u3001
\n\u5148\u7a0b\u306eAjax\u3092\u5b9f\u88c5\u3057\u305f\u3053\u3068\u306b\u3088\u308a\u3001\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u5909\u6570\u304c\u5fc5\u8981\u306b\u306a\u3063\u305f\u305f\u3081\u3067\u3059\u3002<\/p>\n
Relationships\u30b3\u30f3\u30c8\u30ed\u30fc\u30e9\u3067Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u5fdc\u3059\u308b
\napp\/controllers\/relationships_controller.rb<\/strong><\/p>\n
class RelationshipsController < ApplicationController<\/strong>\r\nbefore_action :logged_in_user<\/strong>\r\n\r\n def create<\/strong>\r\n   @user = User.find(params[:followed_id])<\/strong>\r\n   current_user.follow(@user)<\/strong>\r\n   respond_to do |format|<\/strong>\r\n   format.html { redirect_to @user }<\/strong>\r\n   format.js<\/strong>\r\n   end<\/strong>\r\n end<\/strong>\r\n\r\n def destroy<\/strong>\r\n   @user = Relationship.find(params[:id]).followed<\/strong>\r\n   current_user.unfollow(@user)<\/strong>\r\n   respond_to do |format|<\/strong>\r\n   format.html { redirect_to @user }<\/strong>\r\n   format.js<\/strong>\r\n   end<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
(\u30d3\u30e5\u30fc\u3067\u5909\u6570\u3092\u4f7f\u3046\u305f\u3081\u3001user\u304c@user\u306b\u5909\u308f\u3063\u305f\u70b9\u306b\u3082\u6c17\u3092\u3064\u3051\u3066\u304f\u3060\u3055\u3044\u3002)<\/p>\n
Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u5fdc\u3057\u305f\u306e\u3067\u3001\u4eca\u5ea6\u306f\u30d6\u30e9\u30a6\u30b6\u5074\u3067JavaScript\u304c
\n\u7121\u52b9\u306b\u306a\u3063\u3066\u3044\u305f\u5834\u5408(Ajax\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u9001\u308c\u306a\u3044\u5834\u5408)
\n\u3067\u3082\u3046\u307e\u304f\u52d5\u304f\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n
JavaScript\u304c\u7121\u52b9\u306b\u306a\u3063\u3066\u3044\u305f\u3068\u304d\u306e\u305f\u3081\u306e\u8a2d\u5b9a
\nconfig\/application.rb<\/strong><\/p>\n
require File.expand_path('..\/boot', __FILE__)<\/strong>\r\n.<\/strong>\r\n.<\/strong>\r\n.<\/strong>\r\nmodule SampleApp<\/strong>\r\n class Application < Rails::Application<\/strong>\r\n.<\/strong>\r\n.<\/strong>\r\n.<\/strong>\r\n# \u8a8d\u8a3c\u30c8\u30fc\u30af\u30f3\u3092remote\u30d5\u30a9\u30fc\u30e0\u306b\u57cb\u3081\u8fbc\u3080<\/strong>\r\n  config.action_view.embed_authenticity_token_in_remote_forms = true<\/strong>\r\n end<\/strong>\r\nend<\/strong><\/pre>\n
\u4e00\u65b9\u3067\u3001JavaScript\u304c\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u3066\u3082\u3001
\n\u307e\u3060\u5341\u5206\u306b\u5bfe\u5fdc\u3067\u304d\u3066\u3044\u306a\u3044\u90e8\u5206\u304c\u3042\u308a\u307e\u3059\u3002\u3068\u3044\u3046\u306e\u3082\u3001
\nAjax\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u4fe1\u3057\u305f\u5834\u5408\u306f\u3001
\nRails\u304c\u81ea\u52d5\u7684\u306b\u30a2\u30af\u30b7\u30e7\u30f3\u3068\u540c\u3058\u540d\u524d\u3092\u6301\u3064JavaScript\u7528\u306e
\n\u57cb\u3081\u8fbc\u307fRuby(.js.erb)\u30d5\u30a1\u30a4\u30eb(create.js.erb\u3084destroy.js.erb\u306a\u3069)\u3092
\n\u547c\u3073\u51fa\u3059\u304b\u3089\u3067\u3059\u3002<\/p>\n
\u3053\u308c\u3089\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u306fJavaScript\u3068ERb \u3092\u30df\u30c3\u30af\u30b9\u3057\u3066\u73fe\u5728\u306e\u30da\u30fc\u30b8\u306b\u5bfe\u3059\u308b\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002
\n\u30e6\u30fc\u30b6\u30fc\u3092\u30d5\u30a9\u30ed\u30fc\u3057\u305f\u3068\u304d\u3084\u3001\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u3057\u305f\u3068\u304d\u306b\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3092\u66f4\u65b0\u3059\u308b\u305f\u3081\u306b\u3001
\n\u79c1\u305f\u3061\u304c\u3053\u308c\u304b\u3089\u4f5c\u6210\u304a\u3088\u3073\u7de8\u96c6\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u306e\u306f\u3001\u307e\u3055\u306b\u3053\u308c\u3089\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3059\u3002<\/p>\n
JS-ERb\u30d5\u30a1\u30a4\u30eb\u306e\u5185\u90e8\u3067\u306f\u3001DOM(Document Object Model)\u3092\u4f7f\u3063\u3066\u30da\u30fc\u30b8\u3092\u64cd\u4f5c\u3059\u308b\u305f\u3081\u3001Rails\u304cjQuery JavaScript\u30d8\u30eb\u30d1\u30fc\u3092
\n\u81ea\u52d5\u7684\u306b\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002
\n\u3053\u308c\u306b\u3088\u308ajQuery\u30e9\u30a4\u30d6\u30e9\u30ea\u306e\u81a8\u5927\u306aDOM\u64cd\u4f5c\u7528\u30e1\u30bd\u30c3\u30c9\u304c\u4f7f\u3048\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u304c\u3001\u4eca\u56de\u4f7f\u3046\u306e\u306f\u308f\u305a\u304b2\u3064\u3067\u3059\u3002\uff11\u3064\u305a\u3064\u898b\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n
\u307e\u305a\u306f\u30c9\u30eb\u8a18\u53f7 ($) \u3068CSS id\u3092\u4f7f\u3063\u3066\u3001DOM\u8981\u7d20\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u6587\u6cd5\u306b\u3064\u3044\u3066\u77e5\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002
\n\u4f8b\u3048\u3070follow_form\u306e\u8981\u7d20\u3092jQuery\u3067\u64cd\u4f5c\u3059\u308b\u306b\u306f\u3001
\n\u6b21\u306e\u3088\u3046\u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059<\/p>\n
$(\"#follow_form\")<\/strong><\/pre>\n
\u3053\u308c\u306f\u30d5\u30a9\u30fc\u30e0\u3092\u56f2\u3080div\u30bf\u30b0\u3067\u3042\u308a\u3001\u30d5\u30a9\u30fc\u30e0\u305d\u306e\u3082\u306e\u3067\u306f\u306a\u304b\u3063\u305f\u3053\u3068\u3092\u601d\u3044\u51fa\u3057\u3066\u304f\u3060\u3055\u3044\u3002jQuery\u306e\u6587\u6cd5\u306fCSS\u306e\u8a18\u6cd5\u304b\u3089\u5f71\u97ff\u3092\u53d7\u3051\u3066\u304a\u308a\u3001#\u30b7\u30f3\u30dc\u30eb\u3092\u4f7f\u3063\u3066CSS\u306eid\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002
\n\u3054\u60f3\u50cf\u306e\u3068\u304a\u308a\u3001jQuery\u306fCSS\u3068\u540c\u69d8\u3001\u30c9\u30c3\u30c8.\u3092\u4f7f\u3063\u3066CSS\u30af\u30e9\u30b9\u3092\u64cd\u4f5c\u3067\u304d\u307e\u3059\u3002<\/p>\n
\u6b21\u306b\u5fc5\u8981\u306a\u30e1\u30bd\u30c3\u30c9\u306fhtml\u3067\u3059\u3002\u3053\u308c\u306f\u3001\u5f15\u6570\u306e\u4e2d\u3067\u6307\u5b9a\u3055\u308c\u305f\u8981\u7d20\u306e\u5185\u5074\u306b\u3042\u308bHTML\u3092\u66f4\u65b0\u3057\u307e\u3059\u3002
\n\u4f8b\u3048\u3070\u30d5\u30a9\u30ed\u30fc\u7528\u30d5\u30a9\u30fc\u30e0\u5168\u4f53\u3092”foobar”\u3068\u3044\u3046
\n\u6587\u5b57\u5217\u3067\u7f6e\u304d\u63db\u3048\u305f\u3044\u5834\u5408\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u30b3\u30fc\u30c9\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
$(\"#follow_form\").html(\"foobar\")<\/strong><\/pre>\n
\u7d14\u7c8b\u306aJavaScript\u3068\u7570\u306a\u308a\u3001JS-ERb\u30d5\u30a1\u30a4\u30eb\u3067\u306f\u7d44\u307f\u8fbc\u307fRuby(ERb)\u304c\u4f7f\u3048\u307e\u3059\u3002create.js.erb\u30d5\u30a1\u30a4\u30eb\u3067\u306f\u3001
\n\u30d5\u30a9\u30ed\u30fc\u7528\u306e\u30d5\u30a9\u30fc\u30e0\u3092unfollow\u30d1\u30fc\u30b7\u30e3\u30eb\u3067\u66f4\u65b0\u3057\u3001
\n\u30d5\u30a9\u30ed\u30ef\u30fc\u306e\u30ab\u30a6\u30f3\u30c8\u3092\u66f4\u65b0\u3059\u308b\u306e\u306bERb\u3092\u4f7f\u3063\u3066\u3044\u307e\u3059
\n(\u3082\u3061\u308d\u3093\u3053\u308c\u306f\u3001\u30d5\u30a9\u30ed\u30fc\u306b\u6210\u529f\u3057\u305f\u5834\u5408\u306e\u52d5\u4f5c\u3067\u3059)\u3002
\n\u5909\u66f4\u306e\u7d50\u679c\u3092\u2193\u306b\u793a\u3057\u307e\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u3067\u306fescape_javascript\u30e1\u30bd\u30c3\u30c9\u3092\u4f7f\u3063\u3066\u3044\u308b\u70b9\u306b\u6ce8\u76ee\u3057\u3066\u304f\u3060\u3055\u3044\u3002
\nescape_javascript\u30e1\u30bd\u30c3\u30c9\u306f\u3001JavaScript\u30d5\u30a1\u30a4\u30eb\u5185\u306bHTML\u3092\u633f\u5165\u3059\u308b\u3068\u304d\u306b\u5b9f\u884c\u7d50\u679c\u3092\u30a8\u30b9\u30b1\u30fc\u30d7\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u3067\u3059\u3002<\/p>\n
JavaScript\u3068\u57cb\u3081\u8fbc\u307fRuby\u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30ed\u30fc\u306e\u95a2\u4fc2\u6027\u3092\u4f5c\u6210\u3059\u308b
\napp\/views\/relationships\/create.js.erb<\/strong><\/p>\n
$(\"#follow_form\").<\/strong>\r\nhtml(\"<%= escape_javascript(render('users\/unfollow')) %>\");<\/strong>\r\n$(\"#followers\").html('<%= @user.followers.count %>');<\/strong><\/pre>\n
\u5404\u884c\u306e\u672b\u5c3e\u306b\u30bb\u30df\u30b3\u30ed\u30f3 ; \u304c\u3042\u308b\u3053\u3068\u306b\u6ce8\u76ee<\/p>\n
destroy.js.erb\u30d5\u30a1\u30a4\u30eb\u306e\u65b9\u3082\u540c\u69d8\u3067\u3059
\nRuby JavaScript (RJS) \u3092\u4f7f\u3063\u3066\u30d5\u30a9\u30ed\u30fc\u306e\u95a2\u4fc2\u6027\u3092\u524a\u9664\u3059\u308bapp\/views\/relationships\/destroy.js.erb<\/strong><\/p>\n
$(\"#follow_form\").html(\"<%= escape_javascript(render('users\/follow')) %>\");<\/strong>\r\n$(\"#followers\").html('<%= @user.followers.count %>');<\/strong><\/pre>\n
\u3053\u308c\u3089\u306e\u30b3\u30fc\u30c9\u306b\u3088\u308a\u3001\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3092\u66f4\u65b0\u3055\u305b\u305a\u306b
\n\u30d5\u30a9\u30ed\u30fc\u3068\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u304c\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u3063\u305f\u306f\u305a\u3067\u3059\u3002<\/p>\n
\u6f14\u7fd2<\/h3>\n
\u78ba\u8a8d\u304c\u7d42\u308f\u3063\u305f\u3089\u3001Rails\u30b5\u30fc\u30d0\u30fc\u306e\u30ed\u30b0\u3092\u95b2\u89a7\u3057\u3001\u30d5\u30a9\u30ed\u30fc\/\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u3092\u5b9f\u884c\u3057\u305f\u76f4\u5f8c\u306e\u30c6\u30f3\u30d7\u30ec\u30fc\u30c8\u304c\u3069\u3046\u306a\u3063\u3066\u3044\u308b\u304b\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n
Rendered relationships\/create.js.erb<\/strong>\r\n\r\nRendered relationships\/destroy.js.erb<\/strong><\/pre>\n
js.erb\u30d5\u30a1\u30a4\u30eb\u304c\u30ec\u30f3\u30c0\u30ea\u30f3\u30b0\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n
14.2.6 \u30d5\u30a9\u30ed\u30fc\u3092\u30c6\u30b9\u30c8\u3059\u308b<\/h3>\n
\u30d5\u30a9\u30ed\u30fc\u30dc\u30bf\u30f3\u304c\u52d5\u304f\u3088\u3046\u306b\u306a\u3063\u305f\u306e\u3067\u3001
\n\u30d0\u30b0\u3092\u691c\u77e5\u3059\u308b\u305f\u3081\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30c6\u30b9\u30c8\u3092\u66f8\u3044\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002
\n\u30e6\u30fc\u30b6\u30fc\u306e\u30d5\u30a9\u30ed\u30fc\u306b\u5bfe\u3059\u308b\u30c6\u30b9\u30c8\u3067\u306f\u3001
\n\/relationships\u306b\u5bfe\u3057\u3066POST\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u308a\u3001
\n\u30d5\u30a9\u30ed\u30fc\u3055\u308c\u305f\u30e6\u30fc\u30b6\u30fc\u304c1\u4eba\u5897\u3048\u305f\u3053\u3068\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n
assert_difference '@user.following.count', 1 do<\/strong>\r\n post relationships_path, params: { followed_id: @other.id }<\/strong>\r\nend<\/strong><\/pre>\n
\u3053\u308c\u306f\u6a19\u6e96\u7684\u306a\u30d5\u30a9\u30ed\u30fc\u306b\u5bfe\u3059\u308b\u30c6\u30b9\u30c8\u3067\u306f\u3042\u308a\u307e\u3059\u304c\u3001Ajax\u7248\u3082\u3084\u308a\u65b9\u306f\u5927\u4f53\u540c\u3058\u3067\u3059\u3002Ajax\u306e\u30c6\u30b9\u30c8\u3067\u306f\u3001xhr :true\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u3088\u3046\u306b\u3059\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n
assert_difference '@user.following.count', 1 do<\/strong>\r\n post relationships_path, params: { followed_id: @other.id }, xhr: true<\/strong>\r\nend<\/strong><\/pre>\n
xhr (XmlHttpRequest) \u3068\u3044\u3046\u30aa\u30d7\u30b7\u30e7\u30f3\u3092true\u306b\u8a2d\u5b9a\u3059\u308b\u3068\u3001
\nAjax\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u767a\u884c\u3059\u308b\u3088\u3046\u306b\u5909\u308f\u308a\u307e\u3059\u3002
\n\u3057\u305f\u304c\u3063\u3066\u3001respond_to\u3067\u306f\u3001
\nJavaScript\u306b\u5bfe\u5fdc\u3057\u305f\u884c\u304c\u5b9f\u884c\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
\u30e6\u30fc\u30b6\u30fc\u3092\u30d5\u30a9\u30ed\u30fc\u89e3\u9664\u3059\u308b\u3068\u304d\u3082\u69cb\u9020\u306f\u307b\u3068\u3093\u3069\u540c\u3058\u3067\u3001
\npost\u30e1\u30bd\u30c3\u30c9\u3092delete\u30e1\u30bd\u30c3\u30c9\u306b\u7f6e\u304d\u63db\u3048\u3066\u30c6\u30b9\u30c8\u3057\u307e\u3059\u3002
\n\u3064\u307e\u308a\u3001\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u306eid\u3068\u30ea\u30ec\u30fc\u30b7\u30e7\u30f3\u30b7\u30c3\u30d7\u306eid\u3092\u4f7f\u3063\u3066
\nDELETE\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u3001\u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u308b\u6570\u304c1\u3064\u6e1b\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002\u3057\u305f\u304c\u3063\u3066\u3001\u5b9f\u969b\u306b\u52a0\u3048\u308b\u30c6\u30b9\u30c8\u306f\u3001<\/p>\n
assert_difference '@user.following.count', -1 do<\/strong>\r\n delete relationship_path(relationship)<\/strong>\r\nend<\/strong><\/pre>\n
\u4e0a\u306e\u5f93\u6765\u3069\u304a\u308a\u306e\u30c6\u30b9\u30c8\u3068\u3001\u4e0b\u306eAjax\u7528\u306e\u30c6\u30b9\u30c8\u306e\uff12\u3064\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n
assert_difference '@user.following.count', -1 do<\/strong>\r\n delete relationship_path(relationship), xhr: true<\/strong>\r\nend<\/strong><\/pre>\n
[Follow] \/ [Unfollow] \u30dc\u30bf\u30f3\u3092\u30c6\u30b9\u30c8\u3059\u308b green
\ntest\/integration\/following_test.rb<\/strong><\/p>\n
require<\/span> 'test_helper'<\/span>\r\n\r\nclass<\/span> FollowingTest<\/span> <<\/span> ActionDispatch<\/span>::<\/span>IntegrationTest<\/span>\r\n\r\n  def<\/span> setup<\/span>\r\n    @user<\/span>  =<\/span> users<\/span>(<\/span>:michael<\/span>)<\/span>\r\n    @other<\/span> =<\/span> users<\/span>(<\/span>:archer<\/span>)<\/span>\r\n<\/span>    log_in_as<\/span>(<\/span>@user<\/span>)<\/span>\r\n  end<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\n  .<\/span>\r\n  test<\/span> \"should follow a user the standard way\"<\/span> do<\/span>\r\n    assert_difference<\/span> '@user.following.count'<\/span>,<\/span> 1<\/span> do<\/span>\r\n      post<\/span> relationships_path<\/span>,<\/span> params<\/span>:<\/span> {<\/span> followed_id<\/span>:<\/span> @other<\/span>.<\/span>id<\/span> }<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\n\r\n  test<\/span> \"should follow a user with Ajax\"<\/span> do<\/span>\r\n    assert_difference<\/span> '@user.following.count'<\/span>,<\/span> 1<\/span> do<\/span>\r\n      post<\/span> relationships_path<\/span>,<\/span> xhr<\/span>:<\/span> true<\/span>,<\/span> params<\/span>:<\/span> {<\/span> followed_id<\/span>:<\/span> @other<\/span>.<\/span>id<\/span> }<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\n\r\n  test<\/span> \"should unfollow a user the standard way\"<\/span> do<\/span>\r\n    @user<\/span>.<\/span>follow<\/span>(<\/span>@other<\/span>)<\/span>\r\n    relationship<\/span> =<\/span> @user<\/span>.<\/span>active_relationships<\/span>.<\/span>find_by<\/span>(<\/span>followed_id<\/span>:<\/span> @other<\/span>.<\/span>id<\/span>)<\/span>\r\n    assert_difference<\/span> '@user.following.count'<\/span>,<\/span> -<\/span>1<\/span> do<\/span>\r\n      delete<\/span> relationship_path<\/span>(<\/span>relationship<\/span>)<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\n\r\n  test<\/span> \"should unfollow a user with Ajax\"<\/span> do<\/span>\r\n    @user<\/span>.<\/span>follow<\/span>(<\/span>@other<\/span>)<\/span>\r\n    relationship<\/span> =<\/span> @user<\/span>.<\/span>active_relationships<\/span>.<\/span>find_by<\/span>(<\/span>followed_id<\/span>:<\/span> @other<\/span>.<\/span>id<\/span>)<\/span>\r\n    assert_difference<\/span> '@user.following.count'<\/span>,<\/span> -<\/span>1<\/span> do<\/span>\r\n      delete<\/span> relationship_path<\/span>(<\/span>relationship<\/span>),<\/span> xhr<\/span>:<\/span> true<\/span>\r\n    end<\/span>\r\n  end<\/span>\r\nend<\/span><\/strong><\/pre>\n
\u6f14\u7fd2<\/h3>\n
1:respond_to\u30d6\u30ed\u30c3\u30af\u5185\u306e\u5404\u884c\u3092\u9806\u306b\u30b3\u30e1\u30f3\u30c8\u30a2\u30a6\u30c8\u3057\u3066\u3044\u304d\u3001
\n\u30c6\u30b9\u30c8\u304c\u6b63\u3057\u304f\u30a8\u30e9\u30fc\u3092\u691c\u77e5\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002
\n\u5b9f\u969b\u3001\u3069\u306e\u30c6\u30b9\u30c8\u30b1\u30fc\u30b9\u304c\u843d\u3061\u305f\u3067\u3057\u3087\u3046\u304b?<\/p>\n
# format.html { redirect_to @user }\r\n<\/strong>\r\nActionController::UnknownFormat:<\/strong>\r\n\r\napp\/controllers\/relationships_controller.rb:7:in `create'<\/strong>\r\n\r\nActionController::UnknownFormat<\/strong>\r\n\r\napp\/controllers\/relationships_controller.rb:16:in `destroy'<\/strong><\/pre>\n
2:xhr: true\u304c\u3042\u308b\u884c\u306e\u3046\u3061\u3001\u7247\u65b9\u306e\u307f\u3092\u524a\u9664\u3059\u308b\u3068\u3069\u3046\u3044\u3063\u305f\u7d50\u679c\u306b
\n\u306a\u308b\u3067\u3057\u3087\u3046\u304b? \u3053\u306e\u3068\u304d\u767a\u751f\u3059\u308b\u554f\u984c\u306e\u539f\u56e0\u3068\u3001\u306a\u305c\u5148\u307b\u3069\u3067\u78ba\u8a8d\u3057\u305f\u30c6\u30b9\u30c8\u304c\u3053\u306e\u554f\u984c\u3092\u691c\u77e5\u3067\u304d\u305f\u306e\u304b\u8003\u3048\u3066\u307f\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n
\"@user.following.count\" didn't change by 1.<\/strong>\r\nExpected: 3<\/strong>\r\nActual: 2<\/strong><\/pre>\n
Ajax\u3092\u7528\u3044\u305f\u30d5\u30a9\u30ed\u30fc\u3067\u3001
\nPost\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3057\u3066\u3044\u306a\u3044\u305f\u3081\u30d5\u30a9\u30ed\u30fc\u6570\u304c\u5897\u3048\u306a\u3044\u304b\u3089\u30a8\u30e9\u30fc\u306b\u306a\u308b\u3002<\/p>\n
14.3\u306b\u7d9a\u304f<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"
\u305d\u306e14.2\u304b\u3089\u7d9a\u304f 14.2.3 [Following] \u3068 [Followers] \u30da\u30fc\u30b8 \u30d5\u30a9\u30ed\u30fc\u3057\u3066\u3044\u308b\u30e6\u30fc\u30b6\u30fc\u3092\u8868\u793a\u3059\u308b\u30da\u30fc\u30b8\u3068\u3001\u30d5\u30a9\u30ed\u30ef\u30fc\u3092\u8868\u793a\u3059\u308b\u30da\u30fc\u30b8\u306f\u3001 \u3044\u305a\u308c\u3082\u30d7\u30ed\u30d5\u30a3\u30fc\u30eb\u30da\u30fc\u30b8\u3068\u30e6\u30fc\u30b6\u30fc\u4e00\u89a7\u30da\u30fc\u30b8\u3092 […]<\/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-3121","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\/3121","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=3121"}],"version-history":[{"count":9,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/3121\/revisions"}],"predecessor-version":[{"id":4590,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/posts\/3121\/revisions\/4590"}],"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=3121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/categories?post=3121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/suzutukiblog.com\/index.php\/wp-json\/wp\/v2\/tags?post=3121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}