saefullohmaslul / platypus-app

PLATYPUS - Libraries Management App

Migrations

1. Init migration

   npx sequelize init
   

2. Create migration

   npx sequelize migration:generate --name <name-tabel-or-action>
   
   # example
   
   npx sequelize migration:generate --name create-roles
   

3. Running Migration

   npx sequelize db:migrate
   

4. Undo Migration

   npx sequelize db:migrate:undo
   
   #or
   
   npx sequelize db:migrate:undo:all
   

5. Create seeder

   npx sequelize seed:generate --name <name>
   

6. Running seeder

   npx sequelize db:seed:all 
   

7. Undo seeder

   npx sequelize db:seed:undo:all
   

Tipe Tabel yang biasa dipake:

• STRING(255): akan mengalokasikan langsung 255 space (255kb)
• TEXT(1024): akan alokasikan yang diisi (100kb)
• INTEGER: number
• FLOAT, DOUBLE: kalo data kita punya koma
• JSON, JSONB: kalo data kita json
• UUID: id unique, biasa buat jadi tipe dari id, alt selain integer
• BOOLEAN: true/false

Query:

Users.findAll({ where: {

}

})

Users.findOne({ where: {

}

})

Users.create()

Users.update()

Users.destroy()

Docs Sequelize yang perlu dibaca:

• Migration
• Seeder
• Model
• Operator: https://sequelize.org/docs/v6/core-concepts/model-querying-basics/
• Include
• Attributes

Destroy multi data

await Promise.all( users.map(async user => { await user.destroy() }) )