respect-validation/docs/validators/KeySet.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However, that increases the chances of having outdated documentation, so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

3.4 KiB

KeySet

  • KeySet(Validator $validator)
  • KeySet(Validator $validator, Validator ...$validators)

Validates a keys in a defined structure.

v::keySet(
    v::keyExists('foo'),
    v::keyExists('bar')
)->assert(['foo' => 'whatever', 'bar' => 'something']);
// Validation passes successfully

It will validate the keys in the array with the validators passed in the constructor.

v::keySet(
    v::key('foo', v::intVal())
)->assert(['foo' => 42]);
// Validation passes successfully

v::keySet(
    v::key('foo', v::intVal())
)->assert(['foo' => 'string']);
// → `.foo` must be an integer value

Extra keys are not allowed:

v::keySet(
    v::key('foo', v::intVal())
)->assert(['foo' => 42, 'bar' => 'String']);
// → `.bar` must not be present

Missing required keys are not allowed:

v::keySet(
    v::key('foo', v::intVal()),
    v::key('bar', v::stringType()),
    v::key('baz', v::boolType())
)->assert(['foo' => 42, 'bar' => 'String']);
// → `.baz` must be present

Missing non-required keys are allowed:

v::keySet(
    v::key('foo', v::intVal()),
    v::key('bar', v::stringType()),
    v::keyOptional('baz', v::boolType())
)->assert(['foo' => 42, 'bar' => 'String']);
// Validation passes successfully

Alternatively, you can pass a chain of key-related validators to keySet():

v::keySet(
    v::init()
        ->key('foo', v::intVal())
        ->key('bar', v::stringType())
        ->keyOptional('baz', v::boolType())
)->assert(['foo' => 42, 'bar' => 'String']);
// Validation passes successfully

It is not possible to negate keySet() validators with not().

The keys' order is not considered in the validation.

Templates

KeySet::TEMPLATE_STANDARD

Mode Template
default {{subject}} validation failed
inverted {{subject}} validation passed

KeySet::TEMPLATE_BOTH

Mode Template
default {{subject}} contains both missing and extra keys
inverted {{subject}} contains no missing or extra keys.

KeySet::TEMPLATE_EXTRA_KEYS

Mode Template
default {{subject}} contains extra keys
inverted {{subject}} contains no extra keys

KeySet::TEMPLATE_MISSING_KEYS

Mode Template
default {{subject}} contains missing keys
inverted {{subject}} contains no missing keys

Template placeholders

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

Categorization

  • Arrays
  • Nesting
  • Structures

Changelog

Version Description
3.0.0 Requires at least one key-related validator
2.3.0 KeySet is NonNegatable, fixed message with extra keys
1.0.0 Created

See also: