node.js線上讀書會 - Sequelizejs with MySQL實務分享

1. SEQUELIZE 實務分享
NODE.JS線上讀書會 MACY

2. 哥爾羅傑：自己去找吧，我把全世界的寶藏都埋藏在那裡了
SOURCE
▸github :
▸https://github.com/windwaterbo/structuring-models-with-
sequelizejs
▸https://github.com/windwaterbo/sequelizejs-mysql-practice
▸slider share:
▸sequelize.js Document : http://docs.sequelizejs.com/en/v3/

3. 文字
前置作業
▸install sequelize-cli :
▸nam install sequelize-cli -g
▸ npm install --save sequelize-cli
▸node_modules/.bin/sequelize init
▸node_modules/.bin/sequelize init —force
▸會把你原本的config/config.json的檔案給複寫,
▸產生一個models/index.js的檔案
▸產生seeders
▸github : structuring-models-with-sequelizejs

4. 今天的故事
▸放關聯圖

5. 說故事之前...先給資料
SEED
▸給預設資料
~/structuring-models-with-sequelizejs/example > node_modules/.bin/sequelize db:seed seedToy
~/structuring-models-with-sequelizejs/example > node_modules/.bin/sequelize db:seed seedCat.
~/structuring-models-with-sequelizejs/example > node_modules/.bin/sequelize db:seed seedOwn
~/structuring-models-with-sequelizejs/example > node_modules/.bin/sequelize db:seed seedCatI
~/structuring-models-with-sequelizejs/example > node_modules/.bin/sequelize db:seed seedCatT

6. 準備故事的材料...注意事項
開發初期 SYNC TABLE? DROP TABLE?
▸在models/index.js裡面加入
▸sequelize.sync({ force: true, match: /family/ });
▸不需要的時候可以把裡面的option ,”{ force: true, match:
/family/ }” 註解掉

7. 準備故事的材料
DEFINE TABLE
▸欄位設定
▸allowNull
▸autoIncrement
▸primaryKey
▸defaultValue
▸type
▸unique
▸timestamp
▸paranoid
▸注意設定
▸associate
▸freezeTable: true
▸tableName

8. 開始說故事
簡單的CRUD
▸create
▸find
▸update
▸destroy
▸force:true // “paranoid” state

9. 開始說故事
▸BulkCreate
▸updateOnDuplicate
▸如果資料已經存在的話，會做update的動作
▸RAW QUERY
▸複雜的sql script
▸ORM辦不到
▸TRANSACTION
▸禁止同時對資料表做動作

10. 開始說故事
INNER JOIN
▸找出有被領養的貓咪資料
SELECT `Owner`.`id`, `Owner`.`name`, `CatInfos`.`id` AS `CatInfos.id`, `CatInfos`.`nickName

11. 開始說故事
LEFT OUTER JOIN
▸找出貓咪的領養資料
SELECT `Owner`.`id`, `Owner`.`name`, `CatInfos`.`id` AS `CatInfos.id`, `CatInfos`.`nickName

12. 新手常犯的錯誤
有雷
▸id屬性設成AUTO_INCREMENT
▸utc時間的時差問題
▸hasMany association的limit問題