extbase query result object values null - typo3

Question

I have an extension, that works fine on TYPO3 6.2 and 7.4. I try to run ist on TYPO3 8.7.
The problem is, that the values of my database result object are null except uid and pid.
I use $this->subjectRepository->findAll(); and I tried to use individual queries. The result is the same.
$query = $this->createQuery();
$query->statement('SELECT * FROM tx_libconnect_domain_model_subject WHERE deleted = 0 AND hidden = 0');
$query->execute();
This is the dump of the query:
TYPO3\CMS\Extbase\Persistence\Generic\Queryprototypeobject
type => protected'Sub\Libconnect\Domain\Model\Subject' (35 chars)
objectManager => protectedTYPO3\CMS\Extbase\Object\ObjectManagersingletonobjectfiltered
dataMapper => protectedTYPO3\CMS\Extbase\Persistence\Generic\Mapper\DataMappersingletonobjectfiltered
persistenceManager => protectedTYPO3\CMS\Extbase\Persistence\Generic\PersistenceManagersingletonobjectfiltered
qomFactory => protectedTYPO3\CMS\Extbase\Persistence\Generic\Qom\QueryObjectModelFactorysingletonobjectfiltered
source => protectedTYPO3\CMS\Extbase\Persistence\Generic\Qom\Selectorprototypeobject
nodeTypeName => protected'Sub\Libconnect\Domain\Model\Subject' (35 chars)
selectorName => protected'tx_libconnect_domain_model_subject' (34 chars)
constraint => protectedNULL
statement => protectedTYPO3\CMS\Extbase\Persistence\Generic\Qom\Statementprototypeobject
statement => protected'SELECT * FROM tx_libconnect_domain_model_subject WHERE deleted = 0 AND hidde
n = 0' (81 chars)
boundVariables => protectedarray(empty)
orderings => protectedarray(empty)
limit => protectedNULL
offset => protectedNULL
querySettings => protectedTYPO3\CMS\Extbase\Persistence\Generic\Typo3QuerySettingsprototypeobject
respectStoragePage => protectedTRUE
storagePageIds => protectedarray(1 item)
ignoreEnableFields => protectedFALSE
enableFieldsToBeIgnored => protectedarray(empty)
includeDeleted => protectedFALSE
respectSysLanguage => protectedFALSE
languageOverlayMode => protected'1' (1 chars)
languageMode => protected'content_fallback' (16 chars)
languageUid => protected0 (integer)
usePreparedStatement => protectedFALSE
useQueryCache => protectedTRUE
The dump of the result object on TYPO3 8.7:
object(Sub\Libconnect\Domain\Model\Subject)#886 (10) { ["title":protected]=> NULL ["dbisid":protected]=> NULL ["ezbnotation":protected]=> NULL ["uid":protected]=> int(2) ["_localizedUid":protected]=> int(2) ["_languageUid":protected]=> NULL ["_versionedUid":protected]=> int(2) ["pid":protected]=> int(1) ["_isClone":"TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject":private]=> bool(false) ["_cleanProperties":"TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject":private]=> array(5) { ["title"]=> NULL ["dbisid"]=> NULL ["ezbnotation"]=> NULL ["uid"]=> int(2) ["pid"]=> int(1) } }
On TYPO3 6.2:
object(Sub\Libconnect\Domain\Model\Subject)#1078 (10) { ["title":protected]=> string(29) "Allgemein / Fachübergreifend" ["dbisid":protected]=> string(2) "28" ["ezbnotation":protected]=> string(2) "AZ" ["uid":protected]=> int(2) ["_localizedUid":protected]=> int(2) ["_languageUid":protected]=> NULL ["_versionedUid":protected]=> int(2) ["pid":protected]=> int(1) ["_isClone":"TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject":private]=> bool(false) ["_cleanProperties":"TYPO3\CMS\Extbase\DomainObject\AbstractDomainObject":private]=> array(5) { ["title"]=> string(29) "Allgemein / Fachübergreifend" ["dbisid"]=> string(2) "28" ["ezbnotation"]=> string(2) "AZ" ["uid"]=> int(2) ["pid"]=> int(1) } }
Do you have any idea? Thanks a lot.

Answer 1

Sounds like the TCA is not valid.
There were some changes in TCA in the last major updates, e.g.:
The required field "renderType" when using a select
You have to use the tablename as filename for the TCA definitions
You need to move the TCA file for each table into the folder Configuration/TCA
You can see the TCA reference here: https://docs.typo3.org/typo3cms/TCAReference/