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ツイッターのデザインを元にしたsnsアプリを作成しました。

tweetsテーブル

Column	Type	Options
text	string	limit: 140, null: false
image	string
created_at	datetime	null: false
updated_at	integer	null: false
user_id	integer	null: false

Association

belongs_to :user has_many :comments, dependent: :destroy has_many :likes, dependent: :destroy

usersテーブル

Column	Type	Options
email	string	null: false
encrypted_password	string	null: false
reset_password_token	string
reset_password_sent_at	datetime
remember_created_at	datetime
created_at	datetime	null: false
updated_at	datetime	null: false
nickname	string	null: false
username	string	null: false
image	string
profile	text
email	index
reset_password_token	index	unique: true

Association

has_many :tweets, dependent: :destroy has_many :comments, dependent: :destroy has_many :likes, dependent: :destroy has_many :active_relationships, class_name: "Relationship", foreign_key: :following_id has_many :followings, through: :active_relationships, source: :follower has_many :passive_relationships, class_name: "Relationship", foreign_key: :follower_id has_many :followers, through: :passive_relationships, source: :following

relationshipsテーブル

|following_id|integer|| |follower_id|integer|| |created_at|datetime|null: false| |updated_at|datetime|null: false|

Association

belongs_to :following, class_name: "User" belongs_to :follower, class_name: "User"

likesテーブル

Column	Type	Options
tweet_id	integer	null: false
user_id	integer	null: false
created_at	datetime	null: false
updated_at	datetime	null: false
tweet_id	index	null: false
user_id	index	null: false

Association

validates :user_id, presence: true validates :tweet_id, presence: true

commentsテーブル

Column	Type	Options
comment	string	limit: 140, null: false
tweet_id	integer	null: false
user_id	integer	null: false
created_at	datetime	null: false
updated_at	datetime	null: false

Association

belongs_to :user belongs_to :tweet