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respect-validation/docs/validators/Callback.md
Henrique Moody d2198dfd01
 Replace isValid() calls with assert() 
There's more value on showing how `assert()` displays the validation
messages than simply showing if `isValid()` returns `true` or `false`.

However, that increases the chances of having outdated documentation, so
I created a doc linter that updates the Markdown files with the
correct message.
2026-01-13 23:37:06 -07:00

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Callback

  • Callback(callable $callback)
  • Callback(callable $callback, mixed ...$arguments)

Validates the input using the return of a given callable.

v::callback(
    fn (int $input): bool => $input + ($input / 2) == 15,
)->assert(10);
// Validation passes successfully

Templates

Callback::TEMPLATE_STANDARD

Mode Template
default {{subject}} must be valid
inverted {{subject}} must be invalid

Template placeholders

Placeholder Description
subject The validated input or the custom validator name (if specified).

Categorization

  • Callables

Changelog

Version Description
0.3.9 Created

See also: