イイねボタンの非同期処理
プログラミング初心者です。
railsでイイねボタンの実装に挑戦しています。
検索してトップの方に出てくる記事等を参考に、remote:trueを使うやり方非同期処理を実装してみましたが、アイコンの表示が変わらず困っています。イイねの保存と削除は実行されています。
イイね済みか、イイねされていないかの条件分岐が上手くいっていないのですが、原因がわからないです。
発生している問題・エラーメッセージ
一度目にイイねボタンを押した時の挙動
Started POST "/posts/8/likes" for ::1 at 2019-11-27 10:42:19 +0900 Processing by LikesController#create as JS Parameters: {"post_id"=>"8"} Post Load (6.0ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = $1 LIMIT $2 [["id", 8], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:17 User Load (3.5ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 2], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:6 (0.2ms) BEGIN ↳ app/controllers/likes_controller.rb:6 Post Load (0.3ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = $1 LIMIT $2 [["id", 8], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:6 Like Exists (0.4ms) SELECT 1 AS one FROM "likes" WHERE "likes"."post_id" = $1 AND "likes"."user_id" = $2 LIMIT $3 [["post_id", 8], ["user_id", 2], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:6 Like Create (0.5ms) INSERT INTO "likes" ("post_id", "user_id", "created_at", "updated_at") VALUES ($1, $2, $3, $4) RETURNING "id" [["post_id", 8], ["user_id", 2], ["created_at", "2019-11-27 01:42:19.163391"], ["updated_at", "2019-11-27 01:42:19.163391"]] ↳ app/controllers/likes_controller.rb:6 (3.3ms) COMMIT ↳ app/controllers/likes_controller.rb:6 Rendering likes/create.js.erb Like Load (0.2ms) SELECT "likes".* FROM "likes" WHERE "likes"."post_id" = $1 AND "likes"."user_id" = $2 LIMIT $3 [["post_id", 8], ["user_id", 2], ["LIMIT", 1]] ↳ app/models/post.rb:11 Rendered likes/_like.html.slim (3.8ms) Rendered likes/create.js.erb (18.5ms) Completed 200 OK in 88ms (Views: 41.9ms | ActiveRecord: 14.3ms)
二度目にイイねボタンを押した時の挙動
tarted POST "/posts/8/likes" for ::1 at 2019-11-27 10:42:28 +0900 Processing by LikesController#create as JS Parameters: {"post_id"=>"8"} Post Load (0.2ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = $1 LIMIT $2 [["id", 8], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:17 User Load (0.2ms) SELECT "users".* FROM "users" WHERE "users"."id" = $1 ORDER BY "users"."id" ASC LIMIT $2 [["id", 2], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:6 (0.1ms) BEGIN ↳ app/controllers/likes_controller.rb:6 Post Load (0.3ms) SELECT "posts".* FROM "posts" WHERE "posts"."id" = $1 LIMIT $2 [["id", 8], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:6 Like Exists (0.3ms) SELECT 1 AS one FROM "likes" WHERE "likes"."post_id" = $1 AND "likes"."user_id" = $2 LIMIT $3 [["post_id", 8], ["user_id", 2], ["LIMIT", 1]] ↳ app/controllers/likes_controller.rb:6 (0.2ms) ROLLBACK ↳ app/controllers/likes_controller.rb:6 Rendering likes/create.js.erb Like Load (0.2ms) SELECT "likes".* FROM "likes" WHERE "likes"."post_id" = $1 AND "likes"."user_id" = $2 LIMIT $3 [["post_id", 8], ["user_id", 2], ["LIMIT", 1]] ↳ app/models/post.rb:11 Rendered likes/_like.html.slim (13.0ms) Rendered likes/create.js.erb (38.6ms) Completed 200 OK in 218ms (Views: 183.4ms | ActiveRecord: 1.6ms)
該当のソースコード
Ruby
1ルーティング 2Rails.application.routes.draw do 3 devise_for :users 4 root to: 'posts#index' 5 resources :users, only: [:index, :show] 6 resources :posts do 7 resources :likes, only: [:create, :destroy] 8 end 9end
likes.controller.rb class LikesController < ApplicationController before_action :set_post, only: [:create, :destroy] def create @like = current_user.likes.create(post_id: params[:post_id]) end def destroy like = current_user.likes.find_by(post_id: params[:post_id]) like.destroy end private def set_post @post = Post.find(params[:post_id]) end end
postモデル class Post < ApplicationRecord belongs_to :user, optional: true has_many :likes has_many :liked_users, through: :likes, source: :user mount_uploader :image, ImageUploader def like_user(user_id) likes.find_by(user_id: user_id) end end
userモデル class User < ApplicationRecord # Include default devise modules. Others available are: # :confirmable, :lockable, :timeoutable, :trackable and :omniauthable devise :database_authenticatable, :registerable, :recoverable, :rememberable, :validatable has_many :posts, dependent: :destroy has_many :likes, dependent: :destroy has_many :liked_posts, through: :likes, source: :post def already_liked?(post) self.likes.exists?(post_id: post.id) end end
indexビュー .album.py-5.bg-light .container .row - @posts.each do |post| .col-md-4 .card.mb-4.shadow-sm /svg.bd-placeholder-img.card-img-top width="100%" height="225" = image_tag post.image.url, class: 'card-img-top' .card-body p.card-text = post.title .d-flex.justify-content-between.align-items-conter .btn-group button.btn.btn-sm.btn-outline-secondary = link_to 'View', post_path(post) button.btn.btn-sm.btn-outline-secondary = link_to 'Edit', edit_post_path(post) .like-link id= post.id = render partial: 'likes/like', locals:{ post: post }
_like.html.slim - if post.like_user(current_user.id) = link_to post_like_path(post, post.liked_users), method: :delete, class: 'heart-icon', remote: true do .fas.fa-heart - else = link_to post_likes_path(post), method: :post, class: 'empty-heart', remote: true do .far.fa-heart
create.js.erb $("#post.id").html("<%= j(render partial: 'likes/like', locals:{post: @post }) %>");
destroy.js.erb $("#post.id").html("<%= j(render partial: 'likes/like', locals:{post: @post }) %>");
補足情報
Rails 5.2.3
gem devise使用
ビューはslimで記述しています。
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