Validate array of inputs in form in Laravel 5.7

Question

My form has the same input field multiple times. My form field is as follows:

Answer 1

You can use a custom rule with a closure.

https://laravel.com/docs/5.7/validation#custom-validation-rules

To check if an array has all null values check it with array_filter which returns false if they're all null.

So something like...

  $request->validate([

    'items' => [
      // $attribute = 'items', $value = items array, $fail = error message as string
       function($attribute, $value, $fail) {
         if (!array_filter($value)) {
           $fail($attribute.' is empty.');
         } 
       },
     ]
   ]);

This will set the error message: 'items is empty."