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https://github.com/rocketseat-content/youtube-masterclass-knexjs
https://github.com/rocketseat-content/youtube-masterclass-knexjs
Last synced: 2 months ago
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- Host: GitHub
- URL: https://github.com/rocketseat-content/youtube-masterclass-knexjs
- Owner: rocketseat-content
- Created: 2020-04-29T06:37:12.000Z (over 4 years ago)
- Default Branch: master
- Last Pushed: 2020-04-29T06:48:43.000Z (over 4 years ago)
- Last Synced: 2023-03-06T07:27:51.861Z (almost 2 years ago)
- Language: JavaScript
- Size: 39.1 KB
- Stars: 40
- Watchers: 6
- Forks: 12
- Open Issues: 1
-
Metadata Files:
- Readme: README.md
Awesome Lists containing this project
README
# Youtube Masterclass Knex.js
Video: https://youtu.be/U7GjS3FuSkA
Doc: https://www.notion.so/Masterclass-Knex-45d9705a634a4c2b80ac1599585163a6
---
## đź‘€ Pra quem Ă© destinado essa Masterclass?
Iniciantes que conhecem o básico de SQL, Javascript, Node.js, Express e HTTP
NĂŁo querem mais escrever SQL na unha
Querem dar o próximo passo no conhecimento, criação e manutenção de banco de dados.
## âť“ O que, pra que e por que?
- Query Builder
- Construtor de queries SQL com Javascript
- Callback style or Promise style
- Multiplas plataformas (PostgreSQL, MySQL, SQLite3...)
- Agilidade
- Ajuda em todos os cenários? Não , mas ainda assim você pode escrever raw queries
- SQL Raw pode ser perigoso se nĂŁo for feito com cuidado, pode ser feio, e de difĂcil manutenção
- Knex vs SQL Raw
```sql
knex('users').where('id', 1)
select * from `users` where `id` = 1
```
## đź‘ź Praticar
Vamos criar uma API que irá ter CRUD de usuários e projetos desses usuários.
**O que preciso para começar?**
- Nodejs
- PostgreSQL
- VSCode
- Insomnia ou Postman
- [x] Revisar um pouco de SQL
- [x] Create Table
- [x] Instalar: `npm i knex pg express nodemon`
- [x] Create and Config ./knexfile.js with `npx knex init`
- [x] Create and Config ./src/database/index.js
- [x] Log in to local postgres:Â `psql -U postgres`
- [x] Create user migration `npx knex migrate:make migration_name`
- [x] Create user seed `npx knex seed:make seed_name`
- [x] Run Migration and Seeds `migrate:latest` `seed:run`
- [x] Usando o Knex
- [x] Select
- [x] Insert
- [x] Update
- [x] Delete
- [x] Add error handling
- [x] Separar Rotas e criar controllers
- [x] Create projects table (Relacionamento com users)
- [x] Criar migration e seed
- [x] Join User Projects
- [x] Paginação de Projetos
- [x] Soft Delete (user)
- [x] Procedures & Triggers (updated_at)
## đź’§ Code/Drops
```sql
-- create database
CREATE DATABASE knex_test;
-- create table
CREATE TABLE users (
id serial unique,
name text not null
);
-- select all users
SELECT * FROM users;
-- add user
INSERT INTO users (name) values ('Mayk');
-- update user
UPDATE users SET name = 'MaykĂŁo' WHERE id = '1';
-- delete user
DELETE FROM users WHERE id = '1';
-- create table
CREATE TABLE projects (
id serial unique,
user_id integer references users(id),
title text not null
);
-- select all projects
SELECT * FROM projects;
-- add project to user
INSERT INTO projects (user_id, title) values ('1', 'Meu Projeto');
-- relation user with project
SELECT projects.*, users.name
FROM projects
JOIN users ON projects.user_id = users.id;
-- drop
DROP TABLE users;
DROP TABLE projects;
DROP DATABASE knex_test;
```
## 🚀 Próximos passos ?
- â›° Desafio: Criar o restante do CRUD dos Projects
- đź‘“ Conhecer e estudar uma ORM como o Sequelize
[https://www.youtube.com/watch?v=Fbu7z5dXcRs](https://www.youtube.com/watch?v=Fbu7z5dXcRs)
## đź”— ReferĂŞncias
[http://knexjs.org](http://knexjs.org/#Migrations)
[https://devhints.io/knex](https://devhints.io/knex)
[https://github.com/robmclarty/knex-express-project-sample](https://github.com/robmclarty/knex-express-project-sample)
[https://www.postgresqltutorial.com/psql-commands](https://www.postgresqltutorial.com/psql-commands/)
[https://www.postgresql.org/docs/12/sql-createtrigger.html](https://www.postgresql.org/docs/12/sql-createtrigger.html)
[https://stackoverflow.com/questions/36728899/knex-js-auto-update-trigger/48028011#48028011](https://stackoverflow.com/questions/36728899/knex-js-auto-update-trigger/48028011#48028011)
[https://developer.mozilla.org/pt-BR/docs/Web/HTTP/Status](https://developer.mozilla.org/pt-BR/docs/Web/HTTP/Status)
[https://www.postman.com/](https://www.postman.com/)
[https://insomnia.rest/](https://insomnia.rest/)
[https://code.visualstudio.com/](https://code.visualstudio.com/)
[https://www.postgresql.org/download/](https://www.postgresql.org/download/)
---
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