I've table like: product_id->name,description, price
I want to retrieve all products, so this is my code for retrieve products
$doc = $this->getDoctrine();
$em = $doc->getEntityManager();
$conn = $em->getConnection();
$repo = $doc->getRepository('AppBundle:Products');
$query = $repo->createQueryBuilder('p')->getQuery();
$sql = $query->getSql();
$stmt = $conn->prepare($sql);
$stmt->execute();
$products = $stmt->fetchAll(\PDO::FETCH_ASSOC);
Problem is when building a query it's always add column index suffix after column name as alias
So results is going to be like:
[
{"product_id_0":"1","name_1":"Name1","description_2":"Desc1","price_3":"100"},
{"product_id_0":"2","name_1":"Name2","description_2":"Desc2","price_3":"200"}
]
Notice their are suffix like _0, _1 after column name that I don't want it,
How can I build query without alias like that?
You've already got a repository.
When you have a repository, you do not need to create raw SQL queries or even use the created ones. Let Doctrine take care of that (this is the DBAL, Doctrine's database abstraction layer).
Instead, use a method like findAll() or findBy() to get objects.
Example:
$repo = $doc->getRepository('AppBundle:Products');
$results = $repo -> findAll();
// Returns array(Product, Product, ...), which should be mapped to an entity
// so that you can use $product -> getName() or whatever you need.
You can also create a query to get an array result:
$results = $repo -> createQueryBuilder('p') -> getQuery() -> getArrayResult();
Documentation: http://symfony.com/doc/current/book/doctrine.html
Related
I created a query with query builder like this:
$qb = $em->createQueryBuilder();
$qb->select(['u.id', 'u.name'])
->from(User::class, 'u')
->where('u.active = 1')
;
$sql = $qb->getQuery()->getSql();
The result looks like this:
SELECT u1_.user_id as s1, u1_.full_name as s2 FROM users u1_ WHERE u1_.is_active = 1
I would like to execute it as a native query, but I have to find out, how to map s1, s2 to id, name.
you have to use as inside your select
using your example =>
$qb = $em->createQueryBuilder();
$qb->select(['u.id as s1', 'u.name as s2'])
->from(User::class, 'u')
->where('u.active = 1');
$sql = $qb->getQuery()->getSql();
this maps id to s1 and name as s2
Not sure I understand your question but if you want to run a native query with, in the result, the columns id and name, you can replace them in the query, they're aliases so they can be anything you want :
SELECT u.user_id as id, u.full_name as name FROM users u WHERE u.is_active = 1
I'm playing with Doctrine, and I think I probably miss something.
So I have a table for some relations, and here is the columns:
id | user_id | workshop_id
Basically, I use this table to know that a user is register for a workshop.
I want to count how many users subscribe for a workshop.
So in my Repository, I use a DQL request:
/** #var EntityManager $entityManager */
$entityManager = $this->getEntityManager();
$query = $entityManager->createQuery("
SELECT COUNT('uw.id')
FROM App\Entity\UserWorkshops AS uw
LEFT JOIN App\Entity\User AS u WITH u.userId = uw.user
WHERE uw.workshop = :workshop_id");
$count = $query
->setParameters(['workshop_id' => $workshopId])
->getResult();
And here, and example of the result:
I just need to retrieve 3, as an integer.
How can I return something different ?
thanks
You can use getSingleScalarResult, from the doc:
Query#getSingleScalarResult(): Retrieves a single scalar value from
the result returned by the dbms. If the result contains more than a
single scalar value, an exception is thrown. The pure/mixed
distinction does not apply.
As example:
$count = $query
->setParameters(['workshop_id' => $workshopId])
->getSingleScalarResult();
I have some One-To-Many, unidirectional with Join Table relationships in a Symfony App which I need to query and I can't figure out how to do that in DQL or Query Builder.
The Like entity doesn't have a comments property itself because it can be owned by a lot of different types of entities.
Basically I would need to translate something like this:
SELECT likes
FROM AppBundle:Standard\Like likes
INNER JOIN comment_like ON comment_like.like_id = likes.id
INNER JOIN comments ON comment_like.comment_id = comments.id
WHERE likes.created_by = :user_id
AND likes.active = 1
AND comments.id = :comment_id
I've already tried this but the join output is incorrect, it selects any active Like regardless of its association with the given comment
$this->createQueryBuilder('l')
->select('l')
->innerJoin('AppBundle:Standard\Comment', 'c')
->where('l.owner = :user')
->andWhere('c = :comment')
->andWhere('l.active = 1')
->setParameter('user', $user)
->setParameter('comment', $comment)
I see 2 options to resolve this:
Make relation bi-directional
Use SQL (native query) + ResultSetMapping.
For the last option, here is example of repository method (just checked that it works):
public function getLikes(Comment $comment, $user)
{
$sql = '
SELECT l.id, l.active, l.owner
FROM `like` l
INNER JOIN comment_like ON l.id = comment_like.like_id
WHERE comment_like.comment_id = :comment_id
AND l.active = 1
AND l.owner = :user_id
';
$rsm = new \Doctrine\ORM\Query\ResultSetMappingBuilder($this->_em);
$rsm->addRootEntityFromClassMetadata(Like::class, 'l');
return $this->_em->createNativeQuery($sql, $rsm)
->setParameter('comment_id', $comment->getId())
->setParameter('user_id', $user)
->getResult();
}
PS: In case of Mysql, 'like' is reserved word. So, if one wants to have table with name 'like' - just surround name with backticks on definition:
* #ORM\Table(name="`like`")
I find the Symfony documentation very poor about unidirectional queries.
Anyway I got it working by using DQL and sub-select on the owning entity, which is certainly not as fast. Any suggestion on how to improve that is more than welcomed!
$em = $this->getEntityManager();
$query = $em->createQuery('
SELECT l
FROM AppBundle:Standard\Like l
WHERE l.id IN (
SELECT l2.id
FROM AppBundle:Standard\Comment c
JOIN c.likes l2
WHERE c = :comment
AND l2.owner = :user
AND l2.active = 1
)'
)
->setParameter('user', $user)
->setParameter('comment', $comment)
;
How do I create an insert query in Doctrine that will perform the same function as the following SQL query:
INSERT INTO target (tgt_col1, tgt_col2)
SELECT 'flag' as marker, src_col2 FROM source
WHERE src_col1='mycriteria'
Doctrine documentation says:
If you want to execute DELETE, UPDATE or INSERT statements the Native
SQL API cannot be used and will probably throw errors. Use
EntityManager#getConnection() to access the native database connection
and call the executeUpdate() method for these queries.
Examples
// Get entity manager from your context.
$em = $this->getEntityManager();
/**
* 1. Raw query
*/
$query1 = "
INSERT INTO target (tgt_col1, tgt_col2)
SELECT 'flag' as marker, src_col2 FROM source
WHERE src_col1='mycriteria'
";
$affectedRows1 = $em->getConnection()->executeUpdate($query1);
/**
* 2. Query using class metadata.
*/
$metadata = $em->getClassMetadata(Your\NameSpace\Entity\Target::class);
$tableName = $metadata->getTableName();
$niceTitle = $metadata->getColumnName('niceTitle');
$bigDescription = $metadata->getColumnName('bigDescription');
$metadata2 = $em->getClassMetadata(Your\NameSpace\Entity\Source::class);
$table2Name = $metadata2->getTableName();
$smallDescription = $metadata2->getColumnName('smallDescription');
$query2 = "
INSERT INTO $tableName ($niceTitle, $bigDescription)
SELECT 'hardcoded title', $smallDescription FROM $table2Name
WHERE $niceTitle = 'mycriteria'
";
$affectedRows2 = $em->getConnection()->executeUpdate($query2);
I'm still not convinced it's the right approach you are taking but if you really need an SQL query to be run for whatever reason you can do that in Doctrine with $entityManager->createNativeQuery(); function:
http://doctrine-orm.readthedocs.org/en/latest/reference/native-sql.html
Doctrine isn't a tool for query manipulation. The whole idea is to work on Entity level, not the SQL level (tables, etc). Doctrine's 2 QueryBuilder doesn't even support INSERT operations via DQL.
A small snippet of pseudo code below to illustrate how it can be done in "Doctrine's way":
$qb = $entityManager->createQueryBuilder();
$qb->select('s')
->from('\Foo\Source\Entity', 's')
->where('s.col1 = :col1')
->setParameter('col1', 'mycriteria');
$sourceEntities = $qb->getQuery()->getResult();
foreach($sourceEntities as $sourceEntity) {
$targetEntity = new \Foo\Target\Entity();
$targetEntity->col1 = $sourceEntity->col1;
$targetEntity->col2 = $sourceEntity->col2;
$entityManager->persist($targetEntity);
}
$entityManager->flush();
I am trying to obtain value of a custom field of a product. I only have ID of that product. I know title of the custom field.
How can I get value of that custom field?
Please help.
PS: I know PHP well but I am new to Joomla/Virtuemart.
This will work for VM2.x
VM is storing the custom field values in #__virtuemart_customs
The relation between the product and the custom field is maintaining in the #__virtuemart_product_customfields
You have title and Product Id so you can try this
$db = &JFactory::getDBO();
$sql = "SELECT F.custom_value #__virtuemart_customs AS C LEFT JOIN #__virtuemart_product_customfields AS F ON F.virtuemart_customfield_id = C.virtuemart_custom_id where (C.custom_title='$your_customtitle' and F.virtuemart_product_id = '$product_id')";
$db->setQuery($sql);
$db->query();
$res = $db->loadAssoc();
echo $res['custom_value'];
Also you try with inner sub query .
$db = JFactory::getDBO();
$query = $db->getQuery(true);
$query->select('virtuemart_product_id,custom_value');
$query->from('#__virtuemart_product_customfields');
$db->setQuery((string)$query);
$results = $db->loadObjectList();
if ($results){
foreach($results as $result)
{
// do your stuff here
}