CODEWITHSUNDEEP
node.jsmongodbexpressauthorizationnestjs
javad bat
javad bat

Reputation: 5226

How to access/inject the database in a nest.js Auth Guard?

I have a nestjs app that currently has a user and company entity and each company has an owner user. In my case, I want to write a custom decorator to use in each controller method to see if the user is the owner of that company or not.
so I start writing custom Guard like this:

@Injectable()
export class CompanyGuard implements CanActivate {
    constructor() { }
    canActivate(context: ExecutionContext) {
        const request = context.switchToHttp().getRequest();
        const user = request.user;
        if (user) {
            console.log(user);
            return true;
        } else {
            throw new HttpException('you have no access to this company', HttpStatus.UNAUTHORIZED)
        }
    }
}

and I use it like this:

@UseGuards(JwtAuthGuard, CompanyGuard)
@Post('get-data/:companyId/')
getData(@Req() request){}

i want to access mongoose database in CompanyGuard and check the access in database how can i do that?

Upvotes: 0

Views: 2352

Answers (1)

Kim Kern
Kim Kern

Reputation: 60357

Dependency injection works in Guards the same way it does in any other provider (service). So you can just inject the model you want via the constructor:

constructor(@InjectModel(Company.name) private companyModel: Model<company>) {}

Upvotes: 4

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