Wrong Answers Only

Ask questions or answer it wrong.

The purpose of this project is to show some knowldge I have gained with GraphQL + Express + Prisma. There is also an HTTP REST API in the backend to address the Question domain, a simple CRUD, from which I have built the GraphQL service.

Dependencies

• Node.js 13+
• Yarn
• Docker

Backend

PostgreSQL set-up

Download postgres image

docker pull postgres:latest

Setup postgres container with name wao-postgres

docker run --name wao-postgres -p 5432:5432 -e POSTGRES_PASSWORD=itswrong -d postgres

Enter the container

docker exec -it wao-postgres bash

Enter the database server

psql -U postgres

Add UUID extension

create extension if not exists "uuid-ossp";

Check installation

select uuid_generate_v1();

Install packages

yarn install

Prisma ORM

Generate the migration script after modeling

yarn prisma migrate dev --name init --preview-feature

Build the Prisma client every time after change the scheme

yarn prisma generate

Run

yarn start

Frontend

Install packages

yarn install

Run

yarn start

Reference

• Postgres Docker Hub https://hub.docker.com/_/postgres/
• Intro to the TSConfig Reference https://www.typescriptlang.org/tsconfig
• ts-node https://github.com/TypeStrong/ts-node
• Prisma Quickstart https://www.prisma.io/docs/getting-started/quickstart-typescript
• Prisma schema API reference https://www.prisma.io/docs/reference/api-reference/prisma-schema-reference#model-field-scalar-types
• Prisma REST Express sample https://github.com/prisma/prisma-examples/tree/latest/typescript/rest-express
• How to Extend Express when using Typescript https://christiangiacomi.com/posts/extend-express-typescript-custom-types/
• GraphQL Rules https://graphql-rules.com/
• GraphQL Rules - 6. Mutation rules https://graphql-rules.com/rules/mutation
• how to write a mutation schema which returns null? ardatan/graphql-tools#277
• Solution with a custom scalar [how to write a mutation schema which returns null?] https://stackoverflow.com/a/61714123
• Can't import the named export 'Component' from non EcmaScript module (only default export is available) formatjs/formatjs#1395
• Can't import the named export 'diff' from non EcmaScript module (only default export is available) uber/nebula.gl#285
• Wonka — Iterable and observable library https://wonka.kitten.sh/

Clientes

• REST API Client https://hoppscotch.io/?method=GET&url=http://localhost:8080&path=/api/v1/users/88c1a534-84b2-4c5c-a1f8-81844bfab895&rawParams={ "email": "[email protected]", "name": "Alex Ruzenhack" }
• GraphQL Client https://www.graphqlbin.com/v2/6RQ6TM