Laravel Validation: Conditionally Adding Rules

Validating When Present

$v = Validator::make($data, [
    'email' => 'sometimes|required|email',
]);

Complex Conditional Validation

$v = Validator::make($data, [
    'email' => 'required|email',
    'games' => 'required|numeric',
]);
$v->sometimes('reason', 'required|max:500', function ($input) {
    return $input->games >= 100;
});
$v->sometimes(['reason', 'cost'], 'required', function ($input) {
    return $input->games >= 100;
});

Related concepts

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Conditionally Adding Rules
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Laravel Validation: Conditionally Adding Rules — Structure map

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Laravel Validation: Conditionally Adding Rules — Related pages:

Validation