| Column | Type | Options |
|---|---|---|
| name | string | null: false, unique: true |
| string | index: true, nill: false, unique: true | |
| password | string | null: false |
- has_many :groups, through: group_users
- has_many :messages
- has_many :group_users
| Column | Type | Options |
|---|---|---|
| name | string | null: false, index: true, unique: true |
- has_many :users, through: group_users
- has_many :group_users
- varidates :name, presence :true
| Column | Type | Options |
|---|---|---|
| user | references | foreign_key: true |
| group | references | foreign_key: true |
- belongs_to :user
- belongs_to :group
| Column | Type | Options |
|---|---|---|
| body | text | |
| image | string | |
| user | references | foreign_key: true |
| group | references | foreign_key: true |
- belongs_to :user
- belongs_to :group