README

messegeテーブル

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

Association

belongs_to :group belongs_to :user

usersテーブル

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

Association

has_many :groups_users has_many :groups,through: groups_users has_many :messeges

groupsテーブル

Column	Type	Options
group_name	string	null: false,unique:true

Associatiuon

has_many :groups_users has_many :users, through: groups_users has_many :messeges

groups_usersテーブル

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

Association

belongs_to :group belongs_to :user