Validation

What it is

Validation checks input shape, bounds, and allowed values.

When to use it

Reject invalid input before applying business operations.

Syntax

$data = $request->validate(["email" => "required|email|max:254"]);

Example

$data = $request->validate([
    "amount_cents" => "required|integer|min:1|max:100000000",
    "currency" => "required|in:USD,EUR",
    "reference" => "required|string|max:80",
]);

Common mistakes

unique validation is not a race-safe constraint; validation does not prove ownership.

Related topics