Parametrizable middleware

[AurelieV]

In my express applications, I often define a role check middleware factory.
It takes a role array as a parameter, so I can reuse it for different roles checking (admin, moderator, etc) without rewrite a specific middleware for each case.

Is it possible to do something similar with Nest middlewares?

[kamilmysliwiec]

Hi @AurelieV,
You can use MiddlewaresConsumer.

export class UsersModule implements NestModule {
    configure(consumer: MiddlewaresConsumer) {
        consumer.apply(AuthMiddleware).with(['admin', 'user']).forRoutes(UsersController);
    }
}

Then in the middleware:

resolve(roles: string[]) {
    return (req, res, next) => {
        ///
        next();
    };
}

[AurelieV]

Thanks, I was searching this on the docs :)

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