Prisma Class Validator Generator

Automatically generate typescript models of your database with class validator validations ready, from your Prisma Schema. Updates every time npx prisma generate runs.

Table of Contents

• Supported Prisma Versions
• Installation
• Usage
• Additional Options

Supported Prisma Versions

Probably no breaking changes for this library, so try newer versions first.

Note: Starting from Prisma v5, library versions will match Prisma versions.

Prisma 5

• 5.0.0 and higher

Prisma 4

• 0.2.0 and higher

Prisma 2/3

• 0.1.1 and lower

Installation

Using npm:

 npm install prisma-class-validator-generator

Using yarn:

 yarn add prisma-class-validator-generator

Usage

1- Star this repo 😉

2- Add the generator to your Prisma schema

generator class_validator {
  provider = "prisma-class-validator-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?
  rating    Float
}

will generate the following files

Inside User model:

import { IsInt, IsDefined, IsString, IsOptional } from "class-validator";
import { Post } from "./";

export class User {
    @IsDefined()
    @IsInt()
    id!: number;

    @IsDefined()
    @IsString()
    email!: string;

    @IsOptional()
    @IsString()
    name?: string;

    @IsDefined()
    posts!: Post[];
}

Additional Options

| Option |  Description | Type |  Default | | -------- | ----------------------------------------- | -------- | ------------- | | output | Output directory for the generated models | string | ./generated |

Use additional options in the schema.prisma

generator class_validator {
  provider   = "prisma-class-validator-generator"
  output     = "./generated-models"
}