In DQL, you're not working with the OBD tables, but with the substance, so instead of mytable in the request, there's got to be a class name (possibly abbreviated form) and his alas. This alas should be used as a prefix for the attributes used:SELECT entityAlias FROM NameSpace\EntityClassName entityAlias ORDER BY entityAlias.a - entityAlias.b - entityAlias.c The expression LIMIT is not directly supported in DQL (possibly because the design is not standard for SQL and is differently implemented in different dialects). However, methods can be used to install shifts and sample results http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/dql-doctrine-query-language.html#first-and-max-result-items-dql-query-only ♪With regard to the last part of the question:There's only an example of how to sort the difference between two numbers, and that's how I don't understand the difference between three.It doesn't matter how many fields are involved in terms, 2, 3 or 100.

And why don't you want to build associations, and in the right places, get the meaning?e.g. $auto->getModel()->getName() http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/association-mapping.html

DQL WHERE lines http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/query-builder.html The doctrine has its own. And the repository has a method. createQueryBuilderwhich, instead of you, initiates steps select and from for this class.What's weird is generating. query builder Exactly. DQLwhich then passes on request into an abstract syntax tree under which the normal building is based SQLinstead of a more logical steamer DQL in machinery query builderwhich directly generates SQL♪ Apparently, someone has a lot of free stuff. CPU♪

Try that. $grow = $query->getResult(Query::HYDRATE_ARRAY);Unfortunately, I can't check now.

Add an additional function Entity\Category on behalf of $this->parent♪ The name of the function shall not coincide with any other field Doctrine I didn't try to put a whole proxy in shape. For example: public function getParentName() { if(!$this->parent) return ''; return $this->parent->getName(); } Put that name in. optgroup_identifier♪ Doctrine especially magically doesn't do anything, just calls a ghetter under that name, which means he can be anything.The function itself checks the existence parent in case the original category. If so, return the empty text. It's like a picture. Is that what you need?

Lyaut is a species. Which means there's a view-cheller. It's normal to do a hat and a futer with a view of the hillpers, and then in the liaut, to challenge the hillper for their rendering. https://samsonasik.wordpress.com/2012/07/20/zend-framework-2-create-your-custom-view-helper/ ♪Inside the chopper. https://stackoverflow.com/questions/21141419/zf2-add-pages-to-navigation-in-the-controller - by reference the method of adding navigation to the service manager, and then getting it from anywhere, from the controller or the helper. And if navigation isn't planned on any page, then zend navigation will appear a little cumbersome: in my personal practice, Zend Navigation is practically useless even in the larger middle portals, but the code adds the complexity.

Change your request. select() ♪ select('p') Or take him away at all.

Fixtures don't need to be sold. Fixtures may need to start a girl or test environment, and they have nothing to do for sale.Migration, too, the zero point of reference, should coincide with the current data structure for sale. i.e. first migration does not create a base, it makes the first change that is needed in a living OBD.Sometimes we made the first migration that creates an initial structure. But then we have to start by handwriting the tape that this migration has already been made. That's why it's only necessary for every decoration. php app/console doctrine:migrations:migrate

Specify the type of structure: 'ids' => \Doctrine\DBAL\Connection::PARAM_STR_ARRAY♪ We'll eventually get:$valueData = $conn->executeQuery( $queryValueData, array( 'ids' =>$tsIds, 'ds' => $date->format('Y-m-d 00:00:00.000000 +02:00'), 'df' => $date->format('Y-m-d 23:59:59.000000 +02:00'), 'tableName' => $tableName, ), array('ids' => \Doctrine\DBAL\Connection::PARAM_STR_ARRAY) );

It came to me that the parent field isn't just parenting, but through the Shildren virtual field, you can go back to the bottom category. It's a huge plus, because there's no need for a class.This is the decision:<?php foreach($categories as $category): ?> <?php if ($category->getParent() === null) : ?> <li><?= $category->getName() ?></li> <?php foreach($category->getChildren() as $children) {?> <li><?= $children->getName() ?></li> <?php }?> <?php endif; ?> <?php endforeach; ?> The number of requests for OBD is increasing (()

First, we need to get EntityManager, jump in the class through the factory. Then, in the counter-allister, catch him in the designer:private $entityManager; public function __construct(EntityManager $entityManager) { $this->entityManager = $entityManager; } Next up in the Eckshens, you make a sample.$categories = $this->entityManager->getRepository(Category::class)->findAll(); You can do your repository, and the search will take into account your circumstances.

What's the problem? In a mistake, it's clearly written that you're not allowed to clear the table of limitation.CONSTRAINT)MySql error. You can't clear the table because there are restrictions on the properties involved. If you're going around ORM and you're making direct requests, then you'll process your own mistakes.First, you need to clear the associated table. destinations♪ And then. countries♪ And put it all in the trench. But it's better to use it. DELETE♪And if you want to clean the table, you can remove the restrictions:$cmd = $em->getClassMetadata(Countries::class); $connection = $em->getConnection(); $connection->beginTransaction(); try { $db = $connection->getDatabasePlatform(); $connection->query('SET FOREIGN_KEY_CHECKS=0'); $sql = $db->getTruncateTableSql($cmd->getTableName()); $connection->executeUpdate($sql); $connection->query('SET FOREIGN_KEY_CHECKS=1'); } catch (\Exception $e) { $connection->rollback(); } PS. Be careful, because after that, all of your things. Destination new ones Countries And there may be confusion. In fact, you need not remove all countries, but add new ones to the OBD system, if not. Because the name of the country is unlikely to change, you don't need to check old countries for a change, but just get new ones. Better redo the logic.

In this controller, it is possible to sort the nature of the request.Change ->orderBy('u.id', 'DESC'); ♪ ->orderBy('u.'.$order_by, $order); And everything else will be like the Tutorial.

Alternatively, if, for any reason, there is no possibility/no desire to use native SQL, a mechanism can be used http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/dql-doctrine-query-language.html#query-hints - i.e. tell the doctrine how to interpret a DQL design. This requires the implementation of the relevant http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/cookbook/dql-custom-walkers.html method walkOrderByClause♪ When results are obtained, the name hint'a for query should be indicated: $query = $ORMQueryBuilder->getQuery(); $query->setHint($yourHintName, $yourHintParams); return $query->getResult(); After this class, it's possible to put your design into DQL. ORDER BY♪

Doctrine dbal is worth usingWhen deciding to use a driver, the number of requests is likely to be compromised. The timing of the request clearly in an adequate bavende will depend not on the diver but on the filling of the DSB, the type of DSB, and the complexity of the queries. What's important is how safe and simple a programmer works with them. I will therefore answer the question:Of course, mysqli isn't too good-looking, leaving room for cracking and making holes safe.

Since the voices of anonymous users are no different, they do not actually need a separate nature. In fact, you need a connection only for real votes, but for anonymous numbers (subject to the uniqueness of these votes not affecting OBD).That's how your real post looks:class Post { // ... /** * @ORM\ManyToMany(targetEntity="User", mappedBy="voices") */ private $votedUsers; /** * @ORM\Column(type="integer") */ private $anonVotes = 0; // ... public function getVotesCount() { return $this-&gt;votedUsers-&gt;count() + $this-&gt;anonVotes; } // ... }

class CategoryForm extends Form implements ObjectManagerAwareInterface private $objectManager; public function __construct(ObjectManager $objectManager) { $this->setObjectManager($objectManager); } $this->add([ 'type' => ObjectSelect::class, 'name' => 'parent', 'attributes' => [ 'id' => 'parent', 'class' => 'select' ], 'options' => [ 'label' => 'Категория', 'object_manager' => $this->getObjectManager(), 'target_class' => Category::class, 'property' => 'name', 'empty_option' => '== Категория ==', 'is_method' => true, 'find_method' => [ 'name' => 'findParentCategories', 'params' => [ //'criteria' => ['status' => 1], 'orderBy' => ['name' => 'ASC'], ], ], ], ]);

This may lead to announced links at the OBD level and not described in Enity classes.I believe that there might be a potential problem in trying to remove these things. Doctrine doesn't know about communication, DB knows. Doctrina's gonna miss the operation - no OBD. Also, if it's not teatime, I know it's unlikely to start a team. php app/console doctrine:schema:update --force --complete - it will remove all changes from the OBD system that do not correspond to the doctrine &apos; s model.In addition, I see this problem in the complexity of the application itself, because it will now have to be kept in the head, not only classes of substance, but also to remember the connections in the OBD itself, as described separately. It would be more difficult to carry out a business logic if knowledge of relationships was clearly not defined in the classes.Besides that, I'd be thinking about something else. The connections can change. How do you do that?

You're probably regenerating the model after changing the OBD system. You don't have to do that. The model is primary. You're working with the model, you don't work directly with the OBD. Migration is available to maintain the OBD and model. For example, the doctrine/migrations package allows for the automated generation of SQL-migration based on model changes. The general process should be:Create/change modelWrite or generate migrationImplement migration to OBD. http://symfony.com/doc/current/bundles/DoctrineMigrationsBundle/index.html

The name of the Group table is the key word sql, so it cannot be used without shielding. It is therefore necessary to either screen or change the name of the table.