[Solved] Which of the following is the correct way to define an optional parameter in a Laravel route? — Ans: Route::get('/user/{id?}', function ($id = null) { ... }); | Laravel

Laravel - Routing

Which of the following is the correct way to define an optional parameter in a Laravel route?

ARoute::get('/user/{id?}', function ($id = null) { ... });

BRoute::get('/user/{id}', function ($id = null) { ... });

CRoute::get('/user/{id?}', function ($id) { ... });

DRoute::get('/user/{id}', function ($id) { ... });

Step-by-Step Solution

Solution:

Step 1: Identify optional parameter syntax in routes
Optional parameters in routes are marked with a question mark after the parameter name.
Step 2: Match with controller parameter default value
The corresponding function parameter must have a default value, usually null, to be optional.
Final Answer:
Route::get('/user/{id?}', function ($id = null) { ... }); -> Option A
Quick Check:
Route param with ? + default value = Correct [OK]

Quick Trick: Use ? in route and default value in function [OK]

Common Mistakes:

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Which of the following is the correct way to define an optional parameter in a Laravel route?