Array

Laravel Validation Array
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Validate input array field with the same data

use Illuminate\Support\Facades\Validator;

$request_input = [
  'user_id_list' = [
    'u-1111',
    'u-2222',
    'u-3333',
  ],
];
 
$validator = Validator::make($request_input, [
    'user_id_list' => [
      'array',
    ],
    'user_id_list.*' => [
      'string',
      'min:5',
      'max:60',
    ],
]);

Validate input different array with the same fields

use Illuminate\Support\Facades\Validator;

$request_input = [
  [
    'name' => 'KJ',
    'age' => 18,
  ],
  [
    'name' => 'Kay',
    'age' => 18,
  ],
  [
    'name' => 'Jay',
    'age' => 18,
  ],
];
 
$validator = Validator::make($request->all(), [
    '*.name' => [
      'string',
      'min:2',
      'max:60',
    ],
    '*.age' => [
      'integer',
      'min:0',
      'max:150',
    ],
]);

Validate input array field keys

use Illuminate\Support\Facades\Validator;
 
$request_input = [
    'user' => [
        'name' => 'KJ',
        'age' => 18,
    ],
];
 
Validator::make($request_input, [
    'user' => 'array:name,age',
]);

Validate input fields with its own array list

use Illuminate\Support\Facades\Validator;
 
$request_input = [
    'user_list' => [
        [
          'name' => 'KJ',
          'age' => 18,
        ],
        [
          'name' => 'Kay',
          'age' => 18,
        ],
        [
          'name' => 'Jay',
          'age' => 18,
        ],
    ],
];
 
Validator::make($request_input, [
    'user_list.*.name' => [
      'string',
      'min:2',
      'max:60',
    ],
    'user_list.*.age' => [
      'integer',
      'min:0',
      'max:150',
    ],
]);

Reference