FOS Elastica -- getting string representation of query - elasticsearch

Question

I am unit-testing a repository that uses FOS Elastica and I was wondering if anyone knows how to get the string version of a query, rather than in array form. Here is my repository method:
/**
* Creates query object by either first or last name, with given parameters
*
* #param $name
*
* #param array $params
*
* #return Query
*/
public function findByFirstOrLast($name, array $params)
{
$queryString = new QueryString();
$queryString->setQuery($name);
$queryString->setFields(array('firstName', 'lastName'));
$query = new Query();
$query->setQuery($queryString);
$query->setSort(array($params['sort'] => array('order' => $params['direction'])));
return $query;
}
Assuming $name = 'foo'; (and that I am sorting on id), I believe the corresponding FOS Elastica query should be
{
"query":
{
"query_string":
{
"query":
"foo",
"fields":["firstName","lastName"]
}
},
"sort":
{
"id":
{
"order":"asc"
}
}
}
Does anyone know how to get this json-string representation of the query? It doesn't necessarily have to be in this pretty format either, it can be a one-line string.

Answer 1

I see you no longer are using this but I ended up needing the same thing.
Right before return $query you can use json_encode($query->getQuery()->toArray()) and that should give you what you need as a single line string.

Answer 2

Not a direct answer to the question but very related. When using a tool like found.no to test your elasticsearch queries, it can be interesting to have the output as YAML so you can paste in the found.no editor like this:
query:
filtered:
query:
multi_match:
query: php
operator: AND
fields:
- field1^30
- field2
- field3
- _all
You can have this kind of output with the following function:
use Elastica\Query;
use Symfony\Component\Yaml\Dumper;
/**
* #param Query $query
* #param bool $asYaml
*/
protected function debugQuery(Query $query, $asYaml = false)
{
echo '<pre>';
$debug = ['query' => $query->getQuery()->toArray()];
if (false === $asYaml) {
echo json_encode($debug, JSON_PRETTY_PRINT);
die();
}
$dumper = new Dumper();
$yaml = $dumper->dump($debug, 100);
echo $yaml;
die();
}
So you can choose either format.