Mongodb & Symfony QueryBuilder - mongodb

Question

Does someone know where I can find some informations about Mongodb QueryBuilder in Symfony2 please? Maybe some examples or some tutorials.
I googled the question but didn't find something good enough..
More specifically I want to retrieve a field in a document based on the embedded document.
Here is an example of document :
{
"name":"Foo",
"age":"25",
"gender":"Male",
"products":[
{
"name":"Apple",
"price":"12.00",
"date":"2015-12-02"
},
{
"name":"Banana",
"price":"9.00",
"date":"201-11-31"
},
]
}
And I want to retrieve the name "Foo" based on the date in products array.
At the moment I use distinct() to list all fields in products.

Answer 1

Simple doctrine mongodb example for EmbedMany in symfony
Assume that a League may have one or many Teams so it is a Embed Many like in your case. Full example is above. If you want more info then I think first 5 posts are enough for you.
EXAMPLE USAGE
->findOneByProperty('name', 'Premiership')
REPO
use Doctrine\ODM\MongoDB\DocumentRepository;
class LeagueRepository extends DocumentRepository
{
/**
* #param string $field
* #param string $data
*
* #return array|null|object
*/
public function findOneByProperty($field, $data)
{
return
$this->createQueryBuilder('League')
->field($field)->equals($data)
->getQuery()
->getSingleResult();
}
}
DUMMY DATA
db.getCollection('league').find({})
/* 1 */
{
"_id" : ObjectId("564fa07add576ebcf90041ac"),
"name" : "Super Lig",
"createdAt" : ISODate("2015-11-20T22:36:42.000Z")
}
/* 2 */
{
"_id" : ObjectId("564fa081dd576ebbf90041ad"),
"name" : "Premiership",
"createdAt" : ISODate("2015-11-20T22:36:49.000Z"),
"updatedAt" : ISODate("2015-11-20T22:37:33.000Z"),
"teams" : [
{
"_id" : ObjectId("564fa0a6dd576ef2f80041ad"),
"name" : "Arsenal",
"createdAt" : ISODate("2015-11-20T22:37:26.000Z")
},
{
"_id" : ObjectId("564fa0addd576ebaf90041ad"),
"name" : "Liverpool",
"createdAt" : ISODate("2015-11-20T22:37:33.000Z")
}
]
}