Add `Unique` rule for validating `iterable`

yiisoft / validator

Yii validator library

https://www.yiiframework.com/

BSD 3-Clause "New" or "Revised" License

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Closed arogachev closed 2 months ago

arogachev commented 2 months ago

Reported by @tomaszkane in English community chat in Telegram.

tomaszkane commented 2 months ago

More example:

{
  "discountCodes": [
    "foo",
    "foo"
  ]
}

values under "discountCodes" must be unique