doctrine

问题 Can someone provide me a couple clear (fact supported) reasons to use/learn DQL vs. SQL when needing a custom query while working with Doctrine Classes? I find that if I cannot use an ORM's built-in relational functionality to achieve something I usually write a custom method in the extended Doctrine or DoctrineTable class. In this method write the needed it in straight SQL (using PDO with proper prepared statements/injection protection, etc...). DQL seems like additional language to learn

问题 Note: This is an ORM limitation reported on the project's issue tracker I'm facing an issue building a DQL query using the arbitrary join syntax introduced in Doctrine 2.3 on an entity class which is the root of a hierarchy. Given these classes: A - no inheritance B1 - abstract, root of a hierarchy, discriminator column is named 'type' I setup a query builder like this: $qb->select('a.id AS idA, b.id AS idB') ->from('\Entity\A', 'a') ->leftJoin('\Entity\B1', 'b', \Doctrine\ORM\Query\Expr\Join

问题 The following code iterates over a table which has ~1,000,000 rows. I was advised to use Doctrine's iterateResult() method to avoid memory issues (docs) : $batchSize = 1000; $i = 0; $q = $em->createQuery('SELECT i from MyBundle:Items i WHERE i.imgSize IS NULL'); $results = array(); $iterableResult = $q->iterate(); while (($row = $iterableResult->next()) !== false) { $results[]=$row[0]; $em->detach($row[0]); if (($i % $batchSize) === 0) { $em->clear(); // allegedly detaches all objects from

问题 this is my database: I would retrieve all records in richiestepreventivo where idImpresa==xx and all the data in privati where privati.id==richiestepreventivo.idPrivato. Can you explain me how I have to set the query with join? Thanks. 回答1: SELECT * FROM privati AS p INNER JOIN richiestepreventivo AS r ON p.id = r.idPrivato WHERE r.idImpresa = xx Are you asking for a simple inner join 回答2: SELECT r.id, p.data FROM richiestepreventivo r JOIN privati p ON p.id = r.idPrivato WHERE r.id = XX; 来源：

问题 i'm working with Symfony and Doctrine, i have a function that will select rows based on specific criteria: $entities = $repository->getSomeEntities(); now i want to render those entities in a choice list, i checked the entity FormType but i couldn't achieve what i'm looking for. Example: $builder->add('id','entity', array( 'class' => 'Path\To\Entity', 'property' => 'id' )); the above code works fine except it selects all the Entities. i checked Symfony documentation http://symfony.com/doc

问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to enable MySQL Query Log? Is there a way to track every SQL query in MySQL? Im using Doctrine ORM to build entities and fetch them from database, and would like to see what queries is Doctrine producing. So when I refresh a webpage that uses Doctrine ORM to fetch some data from database, where could I see queries executed in database? Is this possible? 回答1: Enable MySQL's general query log: The general

问题 I've tried to combine Doctrine with Codeigniter and I'm almost there, I think. The version of Codeigniter is 2.0.2 and from Doctrine is 2.0.0. The problem is now that I get an 500 internal server error using the flush() method of Doctrine. I am following a tutorial (http://wildlyinaccurate.com/integrating-doctrine-2-with-codeigniter-2/) to install doctrine with codeigniter. But at the last step it just fails and I don't know why. This is my code in my controller: $app = new models\application

问题 i have a little problem using doctrine 2 in Zend Framework 2 i have custome class that i use to manipulate doctrine generated model (basically to inject data and populate), to make that work i need the entity manager which is available through the service manager as indicated in Jason Grimes tutorial here http://www.jasongrimes.org/2012/01/using-doctrine-2-in-zend-framework-2/. In his tutorial it works (i tested it) as the ServiceLocator is called from a controller class, but for the

问题 i have 2 entities, one as a main super class which consist of the discrimators etc and one which extends this super class... so that i can record all actions in one table called Action. my discrimator entity: namespace Entities\Members; /** * @Entity * @Table(name="actions") * @MappedSuperClass * @InheritanceType("JOINED") * @DiscriminatorColumn(name="action_type", type="string") * @DiscriminatorMap({"comments" = "Comments", "blog" = "Blog"}) * @HasLifecycleCallbacksIndex */ class Action { /*

问题 I have two tables in my database: sliders and images . One slider can have many images, so the structure of tables is: --------- -------- | SLIDERS | | IMAGES | --------- -------- | id | | id | --------- -------- | title | | title | --------- -------- | sid | -------- SID is a foreign key associated to id in "SLIDERS" table. In entities I put bidirectional relationships OneToMany and ManyToOne , so fetched Slider result would contain Images Objects that belong to him, and Images would contain