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@Jump

DB設計

More than 1 year has passed since last update.

DB設計をしマークダウン記法でREADME記述した。
GitHubでマスターブランチにPushしてしまいその修正で時間がかかってしまった。
他にも中間テーブルの記述の抜け、複数形にしていなかったりした。
user_group → users_groups
has_many :users_groupsがuserテーブル、groupテーブルになかった。
GitHubの使い方は何回も使い、慣れていくしかないかな。

chat-space DB設計

userテーブル

Column Type Options
name string null: false
emall string null: false

Association

  • has_many :groups, though: :users_groups
  • has_many :users_groups
  • has_many :messaages

groupテーブル

Column Type Options
name string null: false

Association

  • has_many :users, though: :users_groups
  • has_many :users_groups
  • has_many :messages

messagesテーブル

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

Association

  • belongs_to :user
  • belongs_to :group

users_groupsテーブル

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

Association

  • belongs_to :user
  • belongs_to :group
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