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How to generate UUID V7 with the Symfony Doctrine Bridge ID generator?#53331

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gnito-org asked this question inQ&A
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My UUID config is as follows:

// config/packages/uid.yamlframework:uid:default_uuid_version:7time_based_uuid_version:7

./bin/console debug:config framework uid outputs:

Current configuration for "framework.uid"=========================================default_uuid_version: 7time_based_uuid_version: 7enabled: truename_based_uuid_version: 5

My entity has:

    #[ORM\Id]    #[ORM\Column(type: UuidType::NAME, unique:true)]    #[ORM\GeneratedValue(strategy:'CUSTOM')]    #[ORM\CustomIdGenerator(class:'doctrine.uuid_generator')]private ?Uuid$id;

The auto-generated entity ID UUIDs are V6, not V7.

If I inspect any of the UUID primary keys in the database with:

./bin/console uuid:inspect 1eea7e0f-d006-64a2-9024-6b5706aaf847

It outputs:

----------------------- --------------------------------------   Label                   Value                                  ----------------------- --------------------------------------   Version                 6                                       toRfc4122 (canonical)   1eea7e0f-d006-64a2-9024-6b5706aaf847    toBase58                4pRXwS8kxg34Axt2x9nG7g                  toBase32                0YX9Z0ZM06CJH9093BAW3ANY27              toHex                   0x1eea7e0fd00664a290246b5706aaf847

Question

How does one configure the Doctrine Bridge UUID generator to generate V7 UUIDs?

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Replies: 3 comments 8 replies

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I don’t see how it could happen 🤔 could you provide a reproducer?

BTW UUID can be generated client-side, which avoids declaring your identifier nullable, which is better.

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1 reply
@gnito-org
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It has something to do withthis UuidFactory component:

namespaceSymfony\Component\Uid\Factory;useSymfony\Component\Uid\Uuid;useSymfony\Component\Uid\UuidV1;useSymfony\Component\Uid\UuidV4;useSymfony\Component\Uid\UuidV5;useSymfony\Component\Uid\UuidV6;class UuidFactory{privatestring$defaultClass;privatestring$timeBasedClass;privatestring$nameBasedClass;privatestring$randomBasedClass;private ?Uuid$timeBasedNode;private ?Uuid$nameBasedNamespace;publicfunction__construct(string|int$defaultClass = UuidV6::class,string|int$timeBasedClass = UuidV6::class,string|int$nameBasedClass = UuidV5::class,string|int$randomBasedClass = UuidV4::class,Uuid|string$timeBasedNode =null,Uuid|string$nameBasedNamespace =null)    {if (null !==$timeBasedNode && !$timeBasedNodeinstanceof Uuid) {$timeBasedNode = Uuid::fromString($timeBasedNode);        }if (null !==$nameBasedNamespace) {$nameBasedNamespace =$this->getNamespace($nameBasedNamespace);        }$this->defaultClass =is_numeric($defaultClass) ? Uuid::class.'V'.$defaultClass :$defaultClass;$this->timeBasedClass =is_numeric($timeBasedClass) ? Uuid::class.'V'.$timeBasedClass :$timeBasedClass;$this->nameBasedClass =is_numeric($nameBasedClass) ? Uuid::class.'V'.$nameBasedClass :$nameBasedClass;$this->randomBasedClass =is_numeric($randomBasedClass) ? Uuid::class.'V'.$randomBasedClass :$randomBasedClass;$this->timeBasedNode =$timeBasedNode;$this->nameBasedNamespace =$nameBasedNamespace;    }publicfunctioncreate():Uuid    {$class =$this->defaultClass;returnnew$class();    }

TheUuidGenerator class is instantiated withnull as the$factory constructor parameter. Consequently it instantiates a vanilla instance ofUuidFactory, which then defaults to UUID::v6.

namespaceSymfony\Bridge\Doctrine\IdGenerator;useDoctrine\ORM\EntityManager;useDoctrine\ORM\EntityManagerInterface;useDoctrine\ORM\Id\AbstractIdGenerator;useSymfony\Component\Uid\Factory\NameBasedUuidFactory;useSymfony\Component\Uid\Factory\RandomBasedUuidFactory;useSymfony\Component\Uid\Factory\TimeBasedUuidFactory;useSymfony\Component\Uid\Factory\UuidFactory;useSymfony\Component\Uid\Uuid;finalclass UuidGeneratorextends AbstractIdGenerator{privatereadonlyUuidFactory$protoFactory;privateUuidFactory|NameBasedUuidFactory|RandomBasedUuidFactory|TimeBasedUuidFactory$factory;private ?string$entityGetter =null;publicfunction__construct(UuidFactory$factory =null)    {$this->protoFactory =$this->factory =$factory ??newUuidFactory();    }

When I dump the $factory parameter it is NULL:

publicfunction__construct(UuidFactory$factory =null)    {dump($factory);$this->protoFactory =$this->factory =$factory ??newUuidFactory();    }
Comment options

The work-around is to not use the auto-generation in the entity:

    #[ORM\Id]    #[ORM\Column(type: UuidType::NAME, unique:true)]private ?Uuid$id =null;publicfunction__construct()    {$this->id = Uuid::v7();    }

It works fine with no problems.

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6 replies
@gnito-org
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OK, but that has no bearing on the issue.

@mariusfaber98
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I think this workaround is no longer needed Symfony fixed it and now generates Uuids v7

@tfink
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Nothing is fixed for me, still generating v6 by default.

@wikando-mu
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I tried to created a ownUuidV7Generator Class and used it as aCustomIdGenerator in my Doctrine Entity.

declare(strict_types=1);namespaceApp\Entity\Doctrine;useDoctrine\ORM\EntityManagerInterface;useDoctrine\ORM\Id\AbstractIdGenerator;useSymfony\Component\Uid\Uuid;useSymfony\Component\Uid\UuidV7;class UuidV7Generatorextends AbstractIdGenerator{publicfunctiongenerateId(EntityManagerInterface$em,$entity):UuidV7    {return Uuid::v7();    }}
    #[ORM\Id]    #[ORM\Column(type: UuidType::NAME, unique:true)]    #[ORM\GeneratedValue(strategy:'CUSTOM')]    #[ORM\CustomIdGenerator(class: UuidV7Generator::class)]publicreadonly Uuid$id;

With this Workaround a UuidV7 was saved in the Database.

@Tan5en5
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Hi everyone,

Same problem on our project, even with redeclaring manuallyuuid.factory anddoctrine.uuid_generator services, problem is still there.

uuid.factory:class:'Symfony\Component\Uid\Factory\UuidFactory'arguments:$defaultClass:7$timeBasedClass:7doctrine.uuid_generator:class:'Symfony\Bridge\Doctrine\IdGenerator\UuidGenerator'arguments:$factory:'@uuid.factory'
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Seeing that this impacts many people I spent some time investigating what’s going on.

First, using the DoctrineBridgeUuidGenerator is a bad idea since you’ll get anull ID until you persist the entity. Setting it in the constructor is simpler and get rid of this issue.
Plus, quoting the docs:

Using UUIDs as primary keys is usually not recommended for performance reasons: indexes are slower and take more space

If you don’t care about those issues, you need to registerCustomIdGenerator’sclass as a service. If you want it to use the defaultuuid.factory you don’t even need to configure it.

So, for the final answer:

services:Symfony\Bridge\Doctrine\IdGenerator\UuidGenerator:~
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1 reply
@Tan5en5
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Many thanks for the explanations 🙂

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