I have started to learn Nestjs, express and graphql. I encountered a problem while trying to authorize access of user authenticated using jwt token. I followed the tutorial for authentication on the Nestjs website. I am able to get the current user, but when I try implementing the basic role base access control, I am unable to access the current user in the canActivate Method. I think it is because the Roles Guard is executed before the Graphql Guard.
I will post the codes here
gql-auth.guard.ts
import { ExecutionContext } from "@nestjs/common";
import { GqlExecutionContext } from "@nestjs/graphql";
import { AuthGuard } from "@nestjs/passport";
export class GqlAuthGuard extends AuthGuard("jwt") {
getRequest(context: ExecutionContext) {
const ctx = GqlExecutionContext.create(context);
console.log("gql simple context: ", context);
console.log("gqlContext: ", ctx.getContext());
return ctx.getContext().req;
}
}
roles.guard.ts
import { CanActivate, ExecutionContext, Injectable } from "@nestjs/common";
import { Reflector } from "@nestjs/core";
import { GqlExecutionContext } from "@nestjs/graphql";
@Injectable()
export class RolesGuard implements CanActivate {
constructor(private reflector: Reflector) {}
canActivate(context: ExecutionContext) {
const roles = this.reflector.get<string[]>("roles", context.getHandler());
const ctx = GqlExecutionContext.create(context);
console.log("roles: ", roles);
console.log("context: ", context.switchToHttp().getRequest());
console.log("gqlContext: ", ctx.getContext().req);
return true;
}
}
jwt.strategy.ts
import { Injectable } from "@nestjs/common";
import { PassportStrategy } from "@nestjs/passport";
import { ExtractJwt, Strategy } from "passport-jwt";
import { jwtConstants } from "../constants";
@Injectable()
export class JwtStrategy extends PassportStrategy(Strategy) {
constructor() {
super({
jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
ignoreExpiration: false,
secretOrKey: jwtConstants.secret,
});
}
validate(payload: any) {
console.log("payload: ", payload);
return payload;
}
}
resolver
@UseGuards(GqlAuthGuard)
@Roles("ADMIN")
@UseGuards(RolesGuard)
@Query((returns) => [Specialty], { nullable: "itemsAndList", name: "specialties" })
async getSpecialties(@Args() params: FindManySpecialtyArgs, @Info() info: GraphQLResolveInfo) {
const select = new PrismaSelect(info).value;
params = { ...params, ...select };
return this.prismaService.specialty.findMany(params);
}
Has anyone successfully implemented this before ?
You should use the two guards in the same @UseGuards()
decorator. Like @UseGuards(GqlAuthGuard, RolesGuard)
. Nest will run these sequentially without a problem.