質問編集履歴
2
コードの修正
test
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File without changes
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test
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@@ -60,108 +60,138 @@
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def show
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@products = Product.all
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if @product == @products.first
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@next_product = Product.next_search(@product)
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elsif @product == @products.last
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@prev_product = Product.prev_search(@product)
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else
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@prev_product = Product.prev_search(@product)
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@next_product = Product.next_search(@product)
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end
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@grandchild = Category.find(@product.category_id)
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@child = @grandchild.parent
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@parent = @child.parent
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@parent_category_products = @products.select { |product| product.category.root.name == @parent.name }
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@user = current_user
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Payjp.api_key = ENV['PAYJP_PRIVATE_KEY']
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@card = CreditCard.find_by(user_id: current_user)
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if user_signed_in?
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@favorite = Favorite.find_by(user_id: current_user.id, product_id: params[:id])
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end
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end
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```
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```favorites
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class FavoritesController < ApplicationController
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def create
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@favorite = Favorite.create(user_id: current_user.id, product_id: params[:product_id])
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@favorites = Favorite.where(product_id: params[:product_id])
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@product = Product.find(params[:product_id])
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end
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def destroy
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@favorite = Favorite.find_by(user_id: current_user.id, product_id: params[:product_id])
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@favorite.destroy
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@favorites = Favorite.where(product_id: params[:product_id])
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@product = Product.find(params[:product_id])
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end
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end
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```
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・モデル
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```product
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中略
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has_many :favorites, dependent: :destroy
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has_many :favorite_users, through: :favorites, source: :user
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-
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def favorite_user(user_id)
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-
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-
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favorites.find_by(user_id: user_id)
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end
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end
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```
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```user
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中略
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has_many :products, dependent: :destroy
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has_many :favorites, dependent: :destroy
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has_many :favorite_products, through: :favorites, source: :product
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def already_favorited?(product)
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self.favorites.exists?(product_id: product.id)
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end
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```
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```favorite
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class Favorite < ApplicationRecord
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belongs_to :user
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belongs_to :product
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validates_uniqueness_of :product_id, scope: :user_id
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end
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```
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-
```favorites
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class FavoritesController < ApplicationController
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-
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def create
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@favorite = Favorite.create(user_id: current_user.id, product_id: params[:product_id])
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@favorites = Favorite.where(product_id: params[:product_id])
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@product = Product.find(params[:product_id])
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end
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def destroy
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@favorite = Favorite.find_by(user_id: current_user.id, product_id: params[:product_id])
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@favorite.destroy
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@favorites = Favorite.where(product_id: params[:product_id])
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@product = Product.find(params[:product_id])
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end
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end
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```
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-
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・モデル
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-
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111
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```product
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-
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中略
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-
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has_many :favorites, dependent: :destroy
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has_many :favorite_users, through: :favorites, source: :user
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def favorite_user(user_id)
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favorites.find_by(user_id: user_id)
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end
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-
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```
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```user
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中略
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has_many :products, dependent: :destroy
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has_many :favorites, dependent: :destroy
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has_many :favorite_products, through: :favorites, source: :product
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def already_favorited?(product)
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self.favorites.exists?(product_id: product.id)
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end
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-
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```
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-
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```favorite
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-
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class Favorite < ApplicationRecord
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-
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belongs_to :user
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-
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belongs_to :product
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-
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validates_uniqueness_of :product_id, scope: :user_id
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end
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```
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-
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・ビュー
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products/index.html.haml
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@@ -192,14 +222,48 @@
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223
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- if user_signed_in?
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- if current_user.already_favorited?(product)
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= link_to product_favorite_path(product, @favorite), method: :delete, remote: true do
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%i.fas.fa-star
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お気に入り
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= product.favorites.count
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- else
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= link_to product_favorites_path(product), method: :post, remote: true do
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%i.far.fa-star
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お気に入り
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= product.favorites.count
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244
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- else
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= icon('fa', 'star')
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お気に入り
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250
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= product.favorites.count
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```
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254
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255
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favorites/_products_favorite.html.haml
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256
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257
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```
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- if user_signed_in?
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261
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- if current_user.already_favorited?(@product)
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262
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197
263
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= link_to product_favorite_path(@product, @favorite), method: :delete, remote: true do
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264
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199
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%i.fas.fa-star
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200
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お気に入り
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202
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-
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203
267
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= @product.favorites.count
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- else
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@@ -208,50 +272,16 @@
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%i.far.fa-star
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お気に入り
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212
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-
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213
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= @product.favorites.count
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214
276
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215
277
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- else
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216
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217
279
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= icon('fa', 'star')
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280
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219
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お気に入り
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220
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-
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= @product.favorites.count
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222
282
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223
283
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```
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224
284
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225
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-
favorites/_products_favorite.html.haml
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226
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-
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227
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```
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228
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-
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229
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- if user_signed_in?
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230
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-
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231
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- if current_user.already_favorited?(@product)
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232
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-
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233
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= link_to product_favorite_path(@product, @favorite), method: :delete, remote: true do
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234
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-
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235
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%i.fas.fa-star
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236
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-
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= @product.favorites.count
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238
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-
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239
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- else
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240
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-
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241
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= link_to product_favorites_path(@product), method: :post, remote: true do
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242
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-
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243
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%i.far.fa-star
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244
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-
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= @product.favorites.count
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246
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-
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247
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-
- else
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248
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-
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249
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= icon('fa', 'star')
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250
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-
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251
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= @product.favorites.count
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252
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-
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253
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-
```
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254
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-
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255
285
|
・jsファイル
|
|
256
286
|
|
|
257
287
|
favorites/create.js.haml、destroy.js.haml
|
1
実装機能のタイトルの追加
test
CHANGED
|
@@ -1 +1 @@
|
|
|
1
|
-
NoMethodError undefined method `id' for nil:NilClass
|
|
1
|
+
いいね機能 NoMethodError undefined method `id' for nil:NilClass
|
test
CHANGED
|
File without changes
|