I have the following Entity scenario:
class PhyVarSelection
{
/**
* #ORM\ManyToOne(
* targetEntity="PhyVar",
* cascade={"persist"})
*
* #ORM\JoinColumn(
* name="phy_var_sel",
* referencedColumnName="id",
* nullable=false)
*/
protected $phyVar;
...
}
class PhyVar extends Variable
{
//no inverse reference
}
PhyVar could be referenced by multiple PhyVarSelection. When I delete a specific PhyVarSelection, I would like to delete the PhyVar if no other PhyVarSelection is referencing that PhyVar anymore.
oncascade={"persist", "remove"} on PhyVarSelection would try to remove it even though other selections are still referencing it. oprhanRemoval=true according to this well written explanation is not the right answer, but I could have misunderstood it.
Is a manual check the only way to accomplish this?
Related
Problem
I'm trying to create a OneToOne association in a Laravel app using Doctrine. When trying to access the association I'm getting this error.
Entity of type 'Status' for IDs clientId(1) was not found
Versions:
Doctrine: 2.7.5
Laravel: 7.30.4
Code:
Client Class
<?php
namespace App\Client;
use App\Person\Person;
use Doctrine\ORM\Mapping as ORM;
/**
* Class Client
* #package App\Client
*
* #ORM\Entity(repositoryClass="ClientRepository")
* #ORM\Table(name="client")
*/
class Client extends Person
{
/**
* #var Status
*
* #ORM\OneToOne(targetEntity="Status", mappedBy="client")
* #ORM\JoinColumn(name="id", referencedColumnName="client_id", nullable=true)
*/
protected $status;
/**
* #return Status
*/
public function getStatus()
{
return $this->status;
}
}
Status Class:
<?php
namespace App\Client\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* Class Status
* #package App\Client\Entity
*
* #ORM\Entity(readOnly=true)
* #ORM\Table(name="status_view")
*/
class Status
{
/**
* #var int
*
* #ORM\Id()
* #ORM\Column(name="client_id", type="integer")
*/
protected $clientId;
/**
* #var \App\Client\Client
*
* #ORM\OneToOne(targetEntity="App\Client\Client", inversedBy="staus")
* #ORM\JoinColumn(name="client_id", referencedColumnName="id", nullable=true)
*/
protected $client;
/**
* #var string
*
* #ORM\Column(name="status", type="string")
*/
protected $status;
/**
* #return string
*/
public function getStatus()
{
return $this->status;
}
}
Calling Code
$client->getStatus()->getStatus()
What I've tried/Answers I've looked at
Entity of type 'AppBundle\Entity\User' for IDs id(155) was not found - I'm not using a Doctrine filter, nor DQL.
https://stackoverflow.com/a/49416542/9530790 - This works, with a few tweaks, by swallowing up the exception, but it feels more like a hack when the docs say nullable should work.
https://stackoverflow.com/a/21887344/9530790 - This states nullable should work but it doesn't.
https://stackoverflow.com/a/15744449/9530790 - Same question different ans. States that Doctrine doesn't support zero-to-one associations, but nullable I believe should be what solves that, but for my problem it's not working. Also there's no link to the docs stating where Zero to one is not supported.
I believe that adding fetch="EAGER" should fix the null issue as elsewhere in our app that works, but when I add that I get an different Doctrine error spl_object_hash() expects parameter 1 to be object, null given, which again has to do with the association not existing.
"Well why aren't you experiencing the above error with your other associations". Great question! After a deep underwater excursion into the Doctrine code, I believe the reason is because those associations are nested and for some reason (I'm not sure why), when nested, the spl_object_hash function, in class UnitOfWork is not called.
Additional Notes:
This is what the object looks like when calling $client->getStatus(), before it errors on the next ->getStatus() call.
DoctrineProxies\__CG__\App\Client\Entity\Status {#2011
+__isInitialized__: false
#clientId: 4
#client: null
#status: null
…2
}
You can see it's a Client Proxy object that's created not a 'true' object, this is why it errors (with Entity of type 'Status' for IDs clientId(1) was not found) when not using fetch="EAGER", since eager loads a true object. See here
This code below in the Proxy object is the what causes the above error. Which is why I can't do a try catch in the parent ('true' Client class), since it errors before calling the parent.
/**
* {#inheritDoc}
*/
public function getStatus()
{
$this->__initializer__ && $this->__initializer__->__invoke($this, 'getStatus', []);
return parent::getStatus();
}
Question:
Why is nullable=true not working as expected, and what should/can I do to make it work?
I have a handler which uses the same Entity for two different kind of queries:
/**
* #ORM\Entity
* #ORM\Table(name="app_iso50k1.meter", schema="app_iso50k1")
* #ORM\InheritanceType("SINGLE_TABLE")
* #ORM\DiscriminatorColumn(name="mettype", type="string")
* #ORM\DiscriminatorMap({"phy" = "PhyMeter"})
*/
abstract class Meter
{
const TYPE_PHYSICAL = 'PHY';
const TYPE_VIRTUAL = 'VIR';
const TYPE_LOGICAL = 'LOG';
/**
* #ORM\Column(type="string")
* #ORM\Id
*/
protected $id;
<methods>
}
/**
* #ORM\Entity
* #ORM\Entity(repositoryClass="PhyMeterRepository")
* #HasLifecycleCallbacks
*/
class PhyMeter extends Meter
{
/**
* #ORM\Column(type="integer", nullable=false)
*/
protected $idInstrum;
/**
* #ORM\Column(type="integer", nullable=false)
*/
protected $idDevice;
/**
* #ORM\Column(type="integer")
*/
protected $instrumType;
...<methods>
}
The first handler's method is performed on a legacy DB table and it would need to map all the fields annotated with #ORM\Column (id, idInstrum, idDevice, instrumType). To do that, I use a primitive query and I map the data by means of a ResultSetMapping
$rsm = new ResultSetMapping;
$rsm->addEntityResult('Belka\Iso50k1Bundle\Entity\PhyMeter', 'mt');
$rsm->addFieldResult('mt', 'id', 'id');
...
and it works like a charm. The problem is on the the other handler's methods which need to persist data on app.meter table: what I really would like to persist are a small part of the properties (i.e. just the id, idInstrum but not instrumType so as not to have that column in my new table's schema.
I was thinking about using StaticPHPDriver but I'm not sure if it is the right way: what I really would like is manually adding/removing some ORM mapping according to my needs (i.e. different handler's functions)
Is that possible? I could remove the mappings (#ORM\column annotation) I don't need to persist, but that way I cannot map the extra properties by using ResultSetMapping, unless I can add it programmatically.
Any hint is more than welcome
I have an entity with a OneToMany relation to itself (note that it uses single table inheritance).
/**
* #ORM\Table()
* #ORM\Entity()
* #ORM\InheritanceType("SINGLE_TABLE")
* #ORM\DiscriminatorColumn(name="discr", type="string", length=30)
**/
abstract class PlatformPost
{
// [...]
/**
* #var PlatformPost
*
* #ORM\ManyToOne(targetEntity="PlatformPost", inversedBy="comments")
*/
private $parent;
/**
* #var PlatformPost[]|Collection
*
* #ORM\OneToMany(targetEntity="PlatformPost", mappedBy="parent", orphanRemoval=true, cascade={"ALL"})
* #Assert\Valid()
*/
private $comments;
// [...]
}
I create this entity from an api and then persist it. If it already exists i use $em->merge($post) to update it.
This only kind of works. The entity I get from that method is exactly like I want it but doctrine does not update the foreign key of the comments. If I query the post again the comment array still contains the old entities which should have been deleted.
A quick solution would be to remove all comments before merging but i'd like a better solution.
Is it possible to have One-To-One Relationships in Flow without having to set the attributes twice?
I have two tables that are connected in a One-To-One Relationship, but only one of them should contain an extra column for this Relation.
Doctrine clearly supports this behavior:
http://doctrine-orm.readthedocs.org/en/latest/reference/association-mapping.html#one-to-one-bidirectional
The class that should come with a componenttape column:
/**
* #Flow\Entity
*/
class Component{
/**
* #var \Some\Package\Domain\Model\Component\Tape
* #ORM\OneToOne(cascade={"all"}, inversedBy="component")
*/
protected $componentTape;
…
}
The class that should just be able to find the connection without an extra column:
/**
* #Flow\Entity
*/
class Tape{
/**
* #var \ Some\Package\Domain\Model\Component
* #ORM\OneToOne(mappedBy="componentTape")
*/
protected $component;
}
A doctrine update will create extra columns for both models.
This is what my workarround at the moment looks like:
class Component{
..
/**
* #param \Some\Package\Domain\Model\Component\Tape $componentTape
* #return void
*/
public function setComponentTape($componentTape) {
$this->componentTape = $componentTape;
$this->componentTape->setComponent($this);
}
The workaround will be necessary anyway to keep the relation correct at all times during a request.
But the second DB column shouldn't be necessary. Did you check if doctrine actually fills it? Maybe/Probably just the created migration is wrong and the component column in Tape can be omitted.
Does your workaround stil work for you?
In my case, I have to update the ComponentTape model on the repository by self:
class Component {
/**
* #param \Some\Package\Domain\Model\Component\Tape $componentTape
* #return void
*/
public function setComponentTape($componentTape) {
$this->componentTape = $componentTape;
$this->componentTape->setComponent($this);
$this->componentTapeRepository->update($this->componentTape);
}
I am using doctrine 2 in zend framework 2. Below is my entity file. The problem is, when I tried to validate schema using,
./vendor/bin/doctrine-module orm:validate-schema
command.
I am getting error,
[Doctrine\DBAL\Schema\SchemaException]
The table with name 'database.opportunitycriteria' already exists.
What should I do?
namespace Administration\Entity;
use Doctrine\ORM\Mapping as ORM;
/**
* OpportunityCriteria
*
* #ORM\Table(name="OpportunityCriteria")
* #ORM\Entity
*/
class Criteria
{
/**
* #var integer
* #ORM\Id
* #ORM\Column(name="criteria_id", type="integer", nullable=false)
*/
private $criteria_id;
/**
* #var string
*
* #ORM\Column(name="description", type="string", nullable=false)
*/
private $description;
}
and appropriate getter and setter methods..
I finally figured it out. OP's use case may be different, but in my case, this was because of a misconfigured bidirectional many-to-many relationship.
I had the following entities:
class Cuisine {
/**
* #ManyToMany(targetEntity="Dish")
* #ORM\JoinTable(name="CuisineDish", ...)
*/
protected $dishes;
}
class Dish {
/**
* #ORM\ManyToMany(targetEntity="Cuisine")
* #ORM\JoinTable(name="CuisineDish", ...)
*/
protected $cuisines;
}
What was missing was the inversedBy and mappedBy properties of the #ManyToMany annotations. These are only required when the association is bi-directional.
So now the correctly mapped entities look like:
class Cuisine {
/**
* #ManyToMany(targetEntity="Dish", inversedBy="cuisines")
* #ORM\JoinTable(name="CuisineDish", )
*/
protected $dishes;
}
class Dish {
/**
* #ORM\ManyToMany(targetEntity="Cuisine", mappedBy="dishes")
* #ORM\JoinTable(name="CuisineDish", ...)
*/
protected $cuisines;
}
And orm:validate-schema does not exit with an exception any more.
The exception message is just misleading, as the database is not altered by this operation. Furthermore, this issue is only spotted when validating the sync with the database, not when validating the mapping only (--skip-sync), where it should.
I just reported this bug.
it can cause this error message if you want to use a table name which is already used by one of the installed bundles.