README

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
...

membersテーブル

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

Association

belongs_to :group
belongs_to :user

usersテーブル

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

Association

has_many :messages
has_many :members
has_many :groups,through::members

groupsテーブル

Column	Type	Options
id	integer
name	string	null: false

Association

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

messagesテーブル

Column	Type	Options
id	integer
boby	text
image	string
user_id	reference	null: false, foreign_key: true
group_id	reference	null: false, foreign_key: true

Association

belongs_to :user
belongs_to :group