Narachii / chat-space

DB設計

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users table

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

Associaton

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

groups table

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Column	Type	Options
name	string	null false, unique true

Association

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

members table

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

Association

• belongs_to :group
• belongs_to :user

messages

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

Association

• belongs_to :user
• belongs_to :group