How to validate an unknown number of fields in a Laravel form

Question

I'm using Laravel 5.4, and have a form that's populated with questions from a database, with each question requiring a 'score' using radio buttons valued 1 thru 10. I need to accommodate an unknown number of questions, and I need validation to test that all questions have a score selected. All the radio button groups are are named q_ followed by the question_id (e.g. q_1, q_2, etc). I suppose this could all be done manually, but Laravel is such a powerful framework I have to think there's a "Laravel" way of doing this. Anyone have any suggestions?

Answer 1

I suggest you avoid giving them prefixed names, and create an actual array using something like the following;

<input type="checkbox" name="question[{{ $question->id }}]" ...>

Now in your controller method you can just do;

$questions = $request->input('questions');

And your validator rules can look like the following;

$request->validate([
    'questions.*' => ['required', 'string']
]);

Laravel lets you validate arrays in many way, check out the documentation.