This README would normally document whatever steps are necessary to get the application up and running.

Things you may want to cover:

• Ruby version

• System dependencies

• Configuration

• Database creation

• Database initialization

• How to run the test suite

• Services (job queues, cache servers, search engines, etc.)

• Deployment instructions

• ...

##usersテーブル

###Association

• has_many :items
• has_many :purchases
• has_one :card, dependent: :destroy
• has_many :sns_credentials
• has_many :user_rooms
• has_many :rooms, through: :user_rooms

##purchasesテーブル(購入情報)

###Association

• belongs_to :user
• belongs_to :item

##addressesテーブル

###Association

• belongs_to :item
• belongs_to_active_hash : prefecture

##itemsテーブル

###Association

• belongs_to :users
• has_one :address
• has_one :purchase
• belongs_to_active_hash :category
• belongs_to_active_hash :item_status (商品の状態)
• belongs_to_active_hash :delivery_burden (配送料の負担)
• belongs_to_active_hash :prefecture (配送元の地域)
• belongs_to_active_hash :send_date (配送までの日数)
• has_many_attached :images
• belongs_to :user
• has_one :address
• has_one :purchase
• has_many :items_tags
• has_many :tags, through: :items_tags
• has_one :room
• has_many :messages

##Roomsテーブル

###Association

• has_many :user_rooms
• has_many :users, through: :user_rooms, dependent: :destroy
• belongs_to :item
• has_many :messages, dependent: :destroy

##UserRoomsテーブル

###Association

• belongs_to :user
• belongs_to :room

##SnsCredentialテーブル

###Association

• belongs_to :user
• belongs_to :room

##Tagsテーブル

###Association

• has_many :items_tags
• has_many :items, through: :items_tags

##ItemTagsテーブル

###Association

• belongs_to :tag
• belongs_to :item

##Messagesテーブル

###Association

• belongs_to :room
• belongs_to :user
• has_one_attached :image

##Ordersテーブル

###Association

• belongs_to :item