0.7.0 • Published 10 months ago

nestjs-roles v0.7.0

Weekly downloads
69
License
MIT
Repository
github
Last release
10 months ago

Type safe roles guard with the decorator for controller made easy. Just specify how to get role from ExecutionContext. nestjs-roles will do the rest.

Install

npm i nestjs-roles

Example

First, let's define roles:

// role.enum.ts

export enum Role {
  ADMIN = 'ADMIN',
  USER = 'USER',
  MODERATOR = 'MODERATOR',
}

Let's say you use nestjs-session and keep role in session property object of request. So then create guard with getRole callback:

// roles.guard.ts

import { ExecutionContext } from '@nestjs/common';
import { createRolesGuard } from 'nestjs-roles';
import { Role } from './role.enum';

function getRole(context: ExecutionContext) {
  const { session } = context.switchToHttp().getRequest();

  if (!session) return;

  // you can use single role or array of roles
  // if you provide array of roles, the guard will pass if one of roles is in required roles
  return (session as { role?: Role | Role[] }).role;
}

export const Roles = createRolesGuard<Role>(getRole);

After that we can set Roles guard globally (don't forget to pass Reflector instance):

// bootstrap.ts

import { NestFactory, Reflector } from '@nestjs/core';
import { Roles } from './roles.guard';

const app = await NestFactory.create(AppModule);

const reflector = app.get<Reflector>(Reflector);
app.useGlobalGuards(new Roles(reflector));

All settings are done. Now you can set up access in your controllers:

// secrets.controller.ts

import { Roles } from './roles.guard';

@Controller('secrets')
@Roles.Params(true) // setup access on Controller for users with any existing role
export class SecretsController {

  @Get('my')
  async readMy() {
    // ...
  }

  @Patch(':id')
  @Roles.Params(Role.ADMIN) // override access on certain handler
  async update() {
    // ...
  }
}
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