Prisma Joi Generator

Automatically generate Joi schemas from your Prisma Schema, and use them to validate your API endpoints or any other use you have. Updates every time npx prisma generate runs.

Table of Contents

• Supported Prisma Versions
• Installation
• Usage
• Additional Options

Supported Prisma Versions

Prisma 4

• 0.2.0 and higher

Prisma 2/3

• 0.1.1 and lower

Installation

Using npm:

 npm install prisma-joi-generator

Using yarn:

 yarn add prisma-joi-generator

Usage

1- Star this repo 😉

2- Add the generator to your Prisma schema

generator joi {
  provider = "prisma-joi-generator"
}

3- Running npx prisma generate for the following schema.prisma

model User {
  id    Int     @id @default(autoincrement())
  email String  @unique
  name  String?
  posts Post[]
}

model Post {
  id        Int      @id @default(autoincrement())
  createdAt DateTime @default(now())
  updatedAt DateTime @updatedAt
  title     String
  content   String?
  published Boolean  @default(false)
  viewCount Int      @default(0)
  author    User?    @relation(fields: [authorId], references: [id])
  authorId  Int?
}

will generate the following files

4- Use generated schemas somewhere in your API logic, like middleware or decorator

import { PostCreateSchema } from './prisma/generated/schemas';

app.post('/blog', async (req, res, next) => {
  const { body } = req;
  const result = PostCreateSchema.validate(body);
});

Additional Options

Option	Description	Type	Default
output	Output directory for the generated joi schemas	string	./generated

Use additional options in the schema.prisma

generator joi {
  provider   = "prisma-joi-generator"
  output     = "./generated-joi-schemas"
}