You want to create a role-based guard that allows access if the user has any one of multiple roles specified on a route. Which approach correctly implements this behavior?

hard📝 Application Q15 of 15

NestJS - Guards

AUse multiple guards each checking one role and combine them with @UseGuards

BCheck only the first role in roles array against user.role in canActivate

CUse @Roles('admin', 'editor') decorator and check if user.role is included in roles array inside canActivate

DIgnore roles and allow access to all authenticated users

Step-by-Step Solution

Solution:

Step 1: Understand multiple roles in @Roles decorator
@Roles can accept multiple roles as arguments to specify allowed roles.
Step 2: Implement canActivate to check inclusion
Checking if user.role is in roles array allows access if user has any allowed role.
Final Answer:
Use @Roles('admin', 'editor') decorator and check if user.role is included in roles array inside canActivate -> Option C
Quick Check:
Check user role in roles array for multiple allowed roles [OK]

Quick Trick: Check if user role is in roles array for multiple roles [OK]

Common Mistakes:

Checking only first role ignores others
Using multiple guards unnecessarily
Allowing all authenticated users ignores roles

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You want to create a role-based guard that allows access if the user has any one of multiple roles specified on a route. Which approach correctly implements this behavior?

Step 1: Understand multiple roles in @Roles decorator

Step 2: Implement canActivate to check inclusion

Final Answer:

Quick Check:

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