ryosuke071111 / rana

DB設計

usersテーブル

Column	Type	Options
name	string	null: false, index: true
email	string	null: false, unique: true

Association

• has_many :posts, dependent: :destroy
• has_many :likes, dependent: :destroy
• has_many :comments, dependent: :destroy
• has_many :tags, through: :user_tags
• has_many :user_tags, dependent: :destroy
• has_many :followed_users, through: :relationships, source: :followed_id
• has_many :relationships, foreign_key: "follower_id", dependent: :destroy
• has_many :reverse_relationships, foreign_key: "followed_id", clas_name: "Relationship", dependent: :destroy
• has_many :followers, through: :reverse_relationships, source: :follower_id
• has_many :groups, through: groups_users, dependent: :destroy
• has_many :group_users, dependent: :destroy

postsテーブル

Column	Type	Options
content	text	null: false
image_name	string
user_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :user
• has_one :group
• has_many :likes, dependent: :destroy
• has_many :comments
• has_many :tags, through: :post_tags
• has_many :post_tags, dependent: :destroy

groupsテーブル

Column	Type	Options
user_id	integer	null :false, index: true, foreign_key: true
post_id	integer	null :false, index: true, foreign_key: true

Association

• has_many :users, through: group_users
• has_many :group_messages
• has_many :group_users

group_usersテーブル

Column	Type	Options
user_id	integer	null :false, index: true, foreign_key: true
post_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :user
• belongs_to :group

group_messagesテーブル

Column	Type	Options
content	text	null :false
image_name	string
group_id	integer	null :false, index: true, foreign_key: true
user_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :group
• belongs_to :user

likesテーブル

Column	Type	Options
user_id	integer	null :false, index: true, foreign_key: true
post_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :user
• belongs_to :post

commentsテーブル

Column	Type	Options
content	text	null :false
user_id	integer	null :false, index: true, foreign_key: true
post_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :user
• belongs_to :post

post_tagsテーブル

Column	Type	Options
tag_id	integer	null :false, index: true, foreign_key: true
post_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :post
• belongs_to :tags

user_tagsテーブル

Column	Type	Options
tag_id	integer	null :false, index: true, foreign_key: true
user_id	integer	null :false, index: true, foreign_key: true

Association

• belongs_to :user
• belongs_to :tag

tagsテーブル

Column	Type	Options
name	string	null :false, index: true, unique: true

Association

• has_many :posts, through: :post_tags
• has_many :post_tags, dependent: :destroy
• has_many :users, through: :user_tags
• has_many :user_tags, dependent: :destroy

relationshipsテーブル

Column	Type	Options
follower_id	integer	null :false, index: true, foreign_key: true, unique: true
followed_id	integer	null :false, index: true, foreign_key: true, unique: true

Association

• belongs_to :followed, class_name: "User"
• belongs_to :follower, class_name: "User"