質問編集履歴
1
class User、class Relationship、及びmigration(create_relationships)を追加致しました。
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File without changes
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@@ -82,9 +82,71 @@
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</h4>
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</div>
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</div>
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85
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```
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87
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### 該当のコード(user.rb)
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88
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```ruby
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class User < ApplicationRecord
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# Include default devise modules. Others available are:
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# :confirmable, :lockable, :timeoutable, :trackable and :omniauthable
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92
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devise :database_authenticatable, :registerable,
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:recoverable, :rememberable, :validatable
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has_secure_password
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validates :name, {presence: true}
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validates :email, {presence: true, uniqueness: true}
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def posts
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return Post.where(user_id: self.id)
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end
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has_many :following_relationships, foreign_key: "follower_id", class_name: "Relationship", dependent: :destroy
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has_many :followings, through: :following_relationships
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has_many :follower_relationships, foreign_key: "following_id", class_name: "Relationship", dependent: :destroy
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has_many :followers, through: :follower_relationships
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def following?(other_user)
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following_relationships.find_by(following_id: other_user.id)
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end
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def follow!(other_user)
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following_relationships.create!(following_id: other_user.id)
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end
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def unfollow!(other_user)
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following_relationships.find_by(following_id: other_user.id).destroy
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end
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end
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```
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### 該当のコード(relationship.rb)
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```ruby
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class Relationship < ApplicationRecord
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belongs_to :follower, class_name: "User"
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belongs_to :following, class_name: "User"
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validates :follower_id, presence: true
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validates :following_id, presence: true
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end
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```
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### 該当のコード(migration create_relationships)
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134
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```ruby
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class CreateRelationships < ActiveRecord::Migration[5.2]
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def change
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create_table :relationships do |t|
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t.integer :follower_id
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t.integer :followed_id
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t.timestamps
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end
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add_index :relationships, :follower_id
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add_index :relationships, :followed_id
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add_index :relationships, [:follower_id, :followed_id], unique: true
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end
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end
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```
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88
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### 試したこと
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89
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90
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deviseのインストールを、こちらを参考に4番の「rails g devise:install」まで行いました。
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