respect-validation/docs/KeyNested.md

KeyNested

• v::keyNested(string $name)
• v::keyNested(string $name, v $validator)
• v::keyNested(string $name, v $validator, boolean $mandatory = true)

Validates an array key or an object property using . to represent nested data.

Validating keys from arrays or ArrayAccess instances:

$array = [
    'foo' => [
        'bar' => 123,
    ],
];

v::keyNested('foo.bar')->validate($array); // true

Validating object properties:

$object = new stdClass();
$object->foo = new stdClass();
$object->foo->bar = 42;

v::keyNested('foo.bar')->validate($object); // true

This rule was inspired by Yii2 ArrayHelper.

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See also:

• Attribute
• Key