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chatspace DB設計

usersテーブル

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

Association

-- has_many :groups_users -- has_many :groups, through: :groups_users -- has_many :messages

groupsテーブル

Column	Type	Options
name	string	null: false

Association

-- has_many :groups_users -- has_many :users, through: :groups_users -- has_many :messages

messagesテーブル

Column	Type	Options
content	string
image	string
user	references	null: false, foreign_key: true
group	references	null: false, foreign_key: true

Association

-- belongs_to :user -- belongs_to :group

groups_usersテーブル

Column	Type	Options
user	references	null: false, foreign_key: true
group	references	null: false, foreign_key: true

Association

-- belongs_to :group -- belongs_to :user