Ok, one more PR related to Validator and its ability to validate arrays.

How it works.

We have several additional methods in Factory and Validator:

Factory:

• setNonIterative()
• addNonIterative()
• removeNonIterative()
• getNonIterative()

Validator:

• setNonIterative() - not recommended in use (overrides default nonIterative rules)
• addNonIterative()
• removeNonIterative()
• getNonIterative()

These methods allow user to set/remove/view so called nonIterative rules. If currently validated rule is set in nonIterative array, then current value will be validated as a whole array (as it is), otherwise it'll be validated item by item if that value is an array but not present in nonIterative.

With default settings, Validator will work the same way as described in #255 PR.
Except of several cases:

• exists rule will use "WHERE IN", so if value is an array there won't be tons of queries
• same & different will compare whole array with other attribute

Default nonIterative: array('Exists', 'Same', 'Different').

Add/Remove rules

Global:

// sets new global non iterative array
Validator::setNonIterative('custom_rule');

// adds new rule to global non iterative array
Validator::addNonIterative('extra_rule');

// result: array('custom_rule', 'extra_rule');

Local:

// $val - new validator class
$val->addNonIterative('custom_rule');
// or multiple
$val->addNonIterative(array('custom_rule', 'extra_rule'));

You can explicitly remove any rule from Factory and Validator:

Validator::removeNonIterative('custom_rule');

// $val - new validator class
$val->removeNonIterative('custom_rule');
// or multiple
$val->removeNonIterative(array('custom_rule', 'extra_rule'));

In order to check which rules are set you can call getNonIterative (both on Factory and Validator class).

Custom rules

If user creates custom validation rule via extends or just extends Validator class, then this rule will be validated on per item basis. You'll have to explicitly add your custom rule to the nonIterative array via addNonIterative on Factory or Validator class.