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Accepted
Suvitruf - Andrei Apanasik
Asked:2020-10-31 10:58:27 +0800 CST2020-10-31 10:58:27 +0800 CST

如何在Guard中设置参数，以便以后可以在控制器中读取？

  • 772

有一个 Guard 检查令牌：

@Injectable()
export class AuthGuard implements CanActivate {
    canActivate(
        context: ExecutionContext,
    ): boolean | Promise<boolean> | Observable<boolean> {
        const request: Request = context.switchToHttp().getRequest();

        const token = ExtractJwt.fromAuthHeaderAsBearerToken()(request);

        try {
            const payload = JwtService.getPayload(token);
            // тут нужно в реквест прокинуть payload 
        }
        catch (e) {
            return false;
        }

        return true;
    }
}

好吧，控制器：

@Post('/v1/saves')
@UseGuards(AuthGuard)
async savesSave(@Body(new ValidationPipe({transform: true})) saveData) {
   // как здесь прочитать то, что установил в Guard'е?
}
typescript

1 个回答

  1. Best Answer

    到目前为止，我只这样做了：

    @Injectable()
export class AuthGuard implements CanActivate {
    canActivate(
        context: ExecutionContext,
    ): boolean | Promise<boolean> | Observable<boolean> {
        const request: Request = context.switchToHttp().getRequest();

        const token = ExtractJwt.fromAuthHeaderAsBearerToken()(request);

        try {
            const payload = JwtService.getPayload(token);
            request["payload"] = JwtService.getPayload(token); // <--- грязнота
        }
        catch (e) {
            return false;
        }

        return true;
    }
}

    装饰器：

    import {createParamDecorator} from '@nestjs/common';

export const UserPayload = createParamDecorator((data, req) => {
    return req.payload;
});

    那么控制器就变成了：

    @Post('/v1/saves')
@UseGuards(AuthGuard)
async savesSave(@Body(new ValidationPipe({transform: true})) saveData, @UserPayload() payload: JwtPayload) {
}

    但是request["payload"]看起来很丑=\

    • 3

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