TYPO3 Core

After adding a predefined value to a field which TCA type is set to "none" and the property annotation is @Transient, TYPO3 tries to persist this predefined value to a none existing database field, which ends in an exception.

The (simplified) model:

<?php
namespace Vendor\Extension\Domain\Model;
use TYPO3\CMS\Extbase\Annotation\ORM\Transient;
class Location extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity
{
  /**
   * @var float
   * @Transient
   */
  protected float $distance = 0.0;

  public function setDistance(float $distance): void
  {
    $this->distance = $distance;
  }
  public function getDistance(): float
  {
    return $this->distance;
  }
}

The relevant TCA field config:

'columns' => [
  'distance' => [
    'config' => [
      'type' => 'none',
    ],
  ],
]

I use this field to add a calculated distance to a location depending of the users location.

Then only way to get rid of this problem is to remove the predefinition value "0.0" from the property and change the getter this way:

public function getDistance(): float
{
  return $this->distance ?? 0.0;
}