README

usersテーブル

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

Association

• has_many :massages
• has_many :groups, through: :members
• has_many :members

groupsテーブル

Column	Type	Options
name	string	null: false

Association

• has_many :messages
• has_many :users, through: :members
• has_many :members

groupusersテーブル

Column	Type	Options
user_id	integer	null: false, foreign_key: true
group_id	integer	null: false, foreign_key: true

Association

• belongs_to :group
• belongs_to :user
• has_many :message

messagesテーブル

Column	Type	Options
body	text
image	string
group_id	integer	foreign_key: true
user_id	integer	foreign_key: true

Association

• belongs_to :member