From 82ede7e980d2dd27204aed98a051ed70b3edfc75 Mon Sep 17 00:00:00 2001
From: Aivaras Gotovskis <aivaras.gotovskis@ongr.io>
Date: Tue, 7 Jul 2015 17:29:02 +0300
Subject: [PATCH] Add has child doc.
---
docs/Filter/HasChild.md | 37 +++++++++++++++++++++++++++++++++++++
1 file changed, 37 insertions(+)
create mode 100644 docs/Filter/HasChild.md
diff --git a/docs/Filter/HasChild.md b/docs/Filter/HasChild.md
new file mode 100644
index 0000000..12228b1
--- /dev/null
+++ b/docs/Filter/HasChild.md
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+# Has Child Filter
+
+> More info about has child filter is in the [official elasticsearch docs][1]
+
+The has child filter accepts a query and the child type to run against,
+and results in parent documents that have child docs matching the query.
+
+## Simple example
+
+{
+ "has_child" : {
+ "type" : "blog_tag",
+ "query" : {
+ "term" : {
+ "tag" : "something"
+ }
+ }
+ }
+}
+```
+
+And now the query via DSL:
+
+```php
+$termQuery = new TermQuery('tag', 'something');
+$hasChildFilter = new HasChildFilter(
+ 'blog_tag',
+ $termQuery
+);
+
+$search = new Search();
+$search->addFilter($hasChildFilter);
+
+$queryArray = $search->toArray();
+```
+
+[1]: https://www.elastic.co/guide/en/elasticsearch/reference/current/query-dsl-has-child-filter.html
--
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