在 Symfony4 中注册自定义 Doctrine 类型

So I have this custom Doctrine type

namespace AppDoctrineTypes;

use DoctrineDBALPlatformsAbstractPlatform; use DoctrineDBALTypesTextType;

class MyType extends TextType
{
   private $prefix='';

   public function getName()
   {
      return 'my_type';
   }
   public function setPrefix(string $prefix)
   {
      $this->prefix=$prefix;
   }
}

I registerd in in the config/packages/doctrine.yml:

doctrine:
    dbal:
        types:
            my_type: AppDoctrineTypesMyType

Then in Kernel boot() I'm trying to add some parameters to this type:

public function boot() {
   parent::boot();

   $myType=Type::getType('my_type');
   $myType->setPrefix('abc');
}

This works perfectly the first time I run the app. The prefix is set for the type and can be used through the whole app. However, the second time I get an Exception:

Unknown column type "encrypted_text" requested. Any Doctrine type that you use has to be registered with DoctrineDBALTypesType::addType(). You can get a list of all the known types with DoctrineDBALTypesType::getTypesMap(). If this error occurs during database introspection then you might have forgotten to register all database types for a Doctrine Type. Use AbstractPlatform#registerDoctrineTypeMapping() or have your custom types implement Type#getMappedDatabaseTypes(). If the type name is empty you might have a problem with the cache or forgot some mapping information.

I then changed boot() to :

    public function boot() {
       parent::boot();
       if (!Type::hasType('my_type')) {
           Type::addType('my_type', 'AppDoctrineTypesMyType');
       }
       $myType=Type::getType('my_type');
       $myType->setPrefix('abc');
   }

Now the exception is gone, but the prefix is not set. I know the exceptions gives me information about what to do but I really don't know where to start.

Can anyone point me in the right direction?

解决方案

For now I fixed it by removing it from config/packages/doctrine.yml so it's not registered there anymore. In Kernel I can now load it:

    public function boot() {
       parent::boot();
       if (!Type::hasType('my_type')) {
           Type::addType('my_type', 'AppDoctrineTypesMyType');
       }
       $myType = Type::getType('my_type');
       $myType->setPrefix('abc');
   }

I still can't really understand why this works before building the cache but not once the cache is build. But well, I can continue now.

If someone has a better answer, I'd be more than happy to accept it.