Theo's Typesafe Cult•2y ago

Making a enum/union type like in prisma, but with drizzle

I have this a role pgEnum and I want to make a enum type that is also a union type, like what happens in prisma when you make a enum

export const role = pgEnum("role", ["USER", "ADMIN"]);

// This is what i'm currently using
export enum Role {
  user = "USER",
  admin = "ADMIN"
}

export const role = pgEnum("role", ["USER", "ADMIN"]);

// This is what i'm currently using
export enum Role {
  user = "USER",
  admin = "ADMIN"
}

With prisma I would be able to do this on the schema

enum Role {
  USER,
  ADMIN
}

enum Role {
  USER,
  ADMIN
}

and use it like this inside my typescript

import { Role } from "@prisma/client";

// This has autocomplete functioning perfectly
const firstExample: Role = "USER";
const secondExample: Role = "ADMIN";
const thirdExample: Role = Role.USER;
const fourthExample: Role = Role.ADMIN

import { Role } from "@prisma/client";

// This has autocomplete functioning perfectly
const firstExample: Role = "USER";
const secondExample: Role = "ADMIN";
const thirdExample: Role = Role.USER;
const fourthExample: Role = Role.ADMIN

6 Replies

PerryOP•2y ago

The best solution I've found so far is:

export enum RoleEnum {
  user = "USER",
  admin = "ADMIN"
}
export type Role = `${RoleEnum}`;

export enum RoleEnum {
  user = "USER",
  admin = "ADMIN"
}
export type Role = `${RoleEnum}`;

But if I wanted to use the enum version I would need to import RoleEnum, which is something i don't need to do with prisma. I don't need to, but I also want to find a way to use something like InferModel on my pgEnum to make the enum but I don't know exactly how the PgEnum type works

Liam•2y ago

Hey did you wind up figuring out how to do this?

PerryOP•2y ago

For now I just have a union I will ping you when I get time to get the exact type @lermatroid this is what i'm using for now

export type Role = (typeof role.enumValues)[number];

export type Role = (typeof role.enumValues)[number];

Liam•2y ago

Thanks!

PerryOP•2y ago

No problem!

Benja•4w ago

More than one year later, and you saved me here 🚀

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Making a enum/union type like in prisma, but with drizzle