[Solved] Which of the following is the correct way to apply a guard to a route in NestJS? — Ans: @UseGuards(AuthGuard) before the route handler method | NestJS

NestJS - Authentication

Which of the following is the correct way to apply a guard to a route in NestJS?

A@UseGuards(AuthGuard) before the controller class

B@UseGuards(AuthGuard) before the route handler method

C@ApplyGuard(AuthGuard) inside the constructor

D@Guard(AuthGuard) before the route handler

Step-by-Step Solution

Solution:

Step 1: Recall the decorator for guards
The correct decorator to apply guards in NestJS is @UseGuards().
Step 2: Identify correct placement
This decorator can be placed before a route handler method or a controller class. @UseGuards(AuthGuard) before the route handler method correctly shows it before a route handler method.
Final Answer:
@UseGuards(AuthGuard) before the route handler method -> Option B
Quick Check:
@UseGuards + route method = D [OK]

Quick Trick: Use @UseGuards() decorator on methods or controllers [OK]

Common Mistakes:

Master "Authentication" in NestJS

9 interactive learning modes - each teaches the same concept differently

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Which of the following is the correct way to apply a guard to a route in NestJS?