[8.x] Support iterables objects on data_get nested arrays

[marcoocram]

Using data_get helper to get properties on nested arrays is only available if the object is an array or Collection.

This PR allows to get data from any "iterable" object.

Example:

class IterableObject implements IteratorAggregate
{
    protected $items = [];

    public function __construct($items = [])
    {
        $this->items = $items;
    }

    public function getIterator()
    {
        return new ArrayIterator($this->items);
    }
}

$object = new IterableObject([
    ['data' => 'hello'],
    ['data' => 'world'],
]);

data_get($object, '*.data');
// ["hello", "world"]

[taylorotwell]

Actually reverted this - too big of a risk of breaking existing applications that aren't expecting this behavior.

[marcoocram]

Any possibility to apply this kind of behaviour on the future?

How can we afford this behaviour?

[BrandonSurowiec]

@marcoocram You could try targeting the master branch for 9.x.

[marcoocram]

Maybe....

But i don't think this is a BC, if someone is using an iterable on data_get with the "*" is doing something wrong because it will return always null right? Is a bad behaviour...

[marcoocram]

reopened to [9.x] => #37453