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トップに関する質問polymorphicのbelongs_to(commentable)のbooleanを変更したい

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2

誤字

2017/06/28 01:56

投稿

hns
hns

スコア10

test CHANGED
File without changes
test CHANGED
@@ -78,12 +78,12 @@
78
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  if self.commentable.comments_count == 0
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+ self.commentable.any_response = false
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+
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+ else
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+
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  self.commentable.any_response = true
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- else
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-
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- self.commentable.any_response = false
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-
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  end
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  true

1

更新しました

2017/06/28 01:56

投稿

hns
hns

スコア10

test CHANGED
File without changes
test CHANGED
@@ -4,7 +4,17 @@
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4
 
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+ > comment.rb
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+
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- ```
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+ ```
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+
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+ # == Schema Information
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+
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+ #
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+
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+ # Table name: comments
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+
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+ #
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  # id :integer not null, primary key
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@@ -20,6 +30,18 @@
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  # updated_at :datetime not null
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+ #
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+
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+ # Indexes
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+
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+ #
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+
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+ # index_comments_on_commentable_id_and_commentable_type (commentable_id,commentable_type)
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+
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+ # index_comments_on_user_id (user_id)
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+
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+ #
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+
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  class Comment < ApplicationRecord
@@ -30,18 +52,38 @@
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-
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+ validates :text, presence: true
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+
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+
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+
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-
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+ before_create :increment_counter
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+
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+ before_destroy :decrement_counter
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+
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+
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+
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+
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+
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+ # 問題の箇所
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+
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+ # before_save -> after_save
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+
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+
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+
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+ # after_save でもダメでした
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+
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+
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+
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- before_save do
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+ after_save do
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  if self.commentable.comments_count == 0
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+ self.commentable.any_response = true
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+
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+ else
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+
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  self.commentable.any_response = false
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- else
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-
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- self.commentable.any_response = true
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-
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  end
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  true
@@ -52,68 +94,270 @@
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-
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-
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- etc ...
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+ private
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+
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+
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+
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+
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+
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+ # Instead of counter_cache
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+
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+ def increment_counter
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+
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+ self.commentable_type.constantize.increment_counter("comments_count", self.commentable_id)
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+
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+ end
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+
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+ # Instead of counter_cache
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+
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+ def decrement_counter
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+
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+ self.commentable_type.constantize.decrement_counter("comments_count", self.commentable_id)
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+
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+ end
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+
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+
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  end
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-
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+ ```
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+
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+
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+
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+ > article.rb
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+
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+
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+
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+ ```
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+
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+ # == Schema Information
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+
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+ #
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+
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+ # Table name: articles
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+
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+ #
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+
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+ # id :integer not null, primary key
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+
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+ # text :string default(""), not null
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+
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+ # any_response :boolean default(FALSE), not null
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+
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+ # comments_count :integer default(0)
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+
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+ # article_category_id :integer not null
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+
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+ # user_id :integer not null
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+
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+ # created_at :datetime not null
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+
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+ # updated_at :datetime not null
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+
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+ #
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+
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+ # Indexes
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+
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+ #
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+
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+ # index_articles_on_article_category_id (article_category_id)
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+
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+ # index_articles_on_user_id (user_id)
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+
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+ #
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  class Article < ApplicationRecord
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+ validates :text,
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+
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+ presence: true
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+
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+
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+
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- belongs_to :user,
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+ belongs_to :user, counter_cache: true
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-
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+
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- counter_cache: 'potatoes_count'
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+ belongs_to :article_category, counter_cache: true
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  has_many :comments, as: :commentable
74
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+
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+
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+
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+
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+ before_save :add_user_id
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+
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+
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+
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+ private
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+
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+ def add_user_id
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+
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+ self.user_id = self.article_category.user_id
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+
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+ end
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+
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+
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+
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  end
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77
- ```
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-
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-
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-
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-
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-
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- ```
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-
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- > $ rails console
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-
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- > Comment.first
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-
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-
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-
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- :id => 1,
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-
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- :text => "vvvvvvvvvvv",
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-
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- :user_id => 1,
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-
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- :commentable_id => 1,
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-
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- :commentable_type => "Article",
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-
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-
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-
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-
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-
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- > Article.first
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-
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- :id => 1,
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-
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- :text => "Eveniet quia voluptatem laudantium perferendis sint ut.",
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-
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- :any_response => false,
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-
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- :comments_count => 1,
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-
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- :user_id => 1,
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-
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-
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-
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- ```
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+
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+
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+ ```
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+
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+
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+
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+ indexのページで、ajaxを使ってarticle#showを呼び出し
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+
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+ そこに、article.comments.each でコメント一覧と
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+
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+ article.comments.build でフォームを出してます。
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+
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+
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+
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+ ```
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+
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+ = simple_form_for(article.comments.build, url: article_comments_path(article), remote: true) do |f|
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+
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+ .row
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+
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+ = f.input :text
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+
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+ .row
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+
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+ = f.button :submit
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+
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+ ```
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+
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+
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+
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+
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+
239
+ > comments_controller.rb
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+
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+
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+
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+ ```
244
+
245
+ class Users::Public::CommentsController < AuthenticateUserController
246
+
247
+ before_action :load_commentable
248
+
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+ respond_to :html, :js
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+
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+
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+
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+ def create
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+
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+ @comment = @commentable.comments.build(comment_params)
256
+
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+ @comment.user_id = current_user.id
258
+
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+ @comment.save
260
+
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+ end
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+
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+
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+
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+
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+
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+
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+
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+ private
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+
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+ def load_commentable
272
+
273
+ resource, id = request.path.split('/')[1, 2]
274
+
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+ @commentable = resource.singularize.classify.constantize.find(id)
276
+
277
+ end
278
+
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+
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+
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+ def comment_params
282
+
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+ params.require(:comment).permit(:text, :user_id)
284
+
285
+ end
286
+
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+
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+
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+
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+
291
+ end
292
+
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+ ```
294
+
295
+
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+
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+ ```
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+
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+ $ > rails console
300
+
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+ $ > @article = Article.first
302
+
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+ #<Article:0x007f9a0a237cc8> {
304
+
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+ :id => 1,
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+
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+ :text => "Nemo odit consectetur impedit.",
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+
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+ :any_response => false,
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+
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+ :comments_count => 0,
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+
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+ :thumbs_count => 0,
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+
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+ :article_category_id => 1,
316
+
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+ :user_id => 1
318
+
319
+ }
320
+
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+
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+
323
+ $ > @article.comments.create(user_id: 1, text: 'hello')
324
+
325
+ #<Comment:0x007f9a0b0d4c90> {
326
+
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+ :id => 1,
328
+
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+ :text => "hello",
330
+
331
+ :user_id => 1,
332
+
333
+ :commentable_id => 1,
334
+
335
+ :commentable_type => "Article"
336
+
337
+ }
338
+
339
+
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+
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+ $ > @article.any_response
342
+
343
+ false
344
+
345
+
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+
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+ $ > Comment.last
348
+
349
+ #<Comment:0x007f9a0dd4cbb0> {
350
+
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+ :id => 1,
352
+
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+ :text => "hello",
354
+
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+ :user_id => 1,
356
+
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+ :commentable_id => 1,
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+
359
+ :commentable_type => "Article"
360
+
361
+ }
362
+
363
+ ```