HasParent.md

Has Parent Filter

More info about has parent filter is in the official elasticsearch docs

The has parent filter accepts a query and a parent type. The query is executed in the parent document space, which is specified by the parent type. This filter returns child documents which associated parents have matched.

Simple example

{ "has_child" : { "type" : "blog_tag", "query" : { "term" : { "tag" : "something" } } } }

And now the query via DSL:

```php
$termQuery = new TermQuery('tag', 'something');
$hasParentFilter = new HasParentFilter(
    'blog',
    $termQuery
);

$search = new Search();
$search->addFilter($hasParentFilter);

$queryArray = $search->toArray();