== README
#Tables
| column | type | Constraint |
|---|---|---|
| body | text | null:false |
| image | string | |
| group_id | references | foreign_key: true |
| user_id | references | foreign_key: true |
| column | type | Constraint |
|---|---|---|
| name | string | null:false |
| string | null:false | |
| password | string | null:false |
| column | type | Constraint |
|---|---|---|
| name | string | null:false |
| column | type | Constraint |
|---|---|---|
| group_id | references | foreign_key: true |
| user_id | references | foreign_key: true |
:messages, :group_id
:users, :name
:users, :email, unique: true
:groups, :name
:users_groups, [:group_id, :user_id]
#Association
- belongs_to :user
- belongs_to :group
- has_many :messages
- has_many :users_groups
- has_many :groups, through: users_groups
- has_many :messages
- has_many :users_groups
- has_many :users, through: users_groups
- belongs_to :user
- belongs_to :group
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