Query parameters in Laravel - Cheat Sheet & Quick Revision

Recall & Review

beginner

What are query parameters in Laravel?

Query parameters are key-value pairs added to the URL after a question mark (?) to send data to the server, often used to filter or sort data.

beginner

How do you access query parameters in a Laravel controller?

You can access query parameters using the Request object, for example: $request->query('key') or $request->input('key').

intermediate

What method do you use to get all query parameters in Laravel?

Use $request->query() without arguments to get all query parameters as an associative array.

intermediate

How can you provide a default value for a missing query parameter in Laravel?

Use $request->query('key', 'default_value') to return 'default_value' if the query parameter 'key' is not present.

intermediate

How do you add query parameters to a URL in Laravel when generating links?

Use the route() helper with an array of parameters, or append query parameters with ->withQueryString() when redirecting.

Which symbol starts query parameters in a URL?

A ?

B #

C &

D /

Query parameters start after a question mark (?) in a URL.

How do you get a query parameter named 'page' in a Laravel controller?

A $request->query('page')

B All of the above

C $request->input('page')

D $request->get('page')

In Laravel, query(), get(), and input() can retrieve query parameters.

What does $request->query('sort', 'asc') do?

A Deletes 'sort' query parameter

B Sets 'sort' query parameter to 'asc'

C Gets 'sort' query parameter or returns 'asc' if missing

D Returns all query parameters

It fetches the 'sort' parameter or returns 'asc' if 'sort' is not present.

How can you keep existing query parameters when redirecting in Laravel?

A Manually append parameters to URL string

B Use route() helper without parameters

C Use $request->all()

D Use ->withQueryString() on the redirect

The withQueryString() method preserves current query parameters during redirects.

Which method returns all query parameters as an array?

A $request->query()

B $request->query('all')

C $request->all()

D $request->input()

$request->query() returns all query parameters as an associative array.

Explain how to retrieve and use query parameters in a Laravel controller.

Think about how Laravel handles incoming URL data.

Describe how to preserve query parameters when redirecting users in Laravel.

Consider user experience when filtering or paginating.