CODEWITHSUNDEEP
modeltypo3extbase
gSorry
gSorry

Reputation: 1274

EXTBASE: Exception while property mapping at property path

When calling getter on AbstractValueObject object this error is shown:

Exception while property mapping at property path "":Creation of objects not allowed. To enable this, you need to set the PropertyMappingConfiguration Value "CONFIGURATION_CREATION_ALLOWED" to TRUE

How to resolve this?

Upvotes: 2

Views: 7223

Answers (2)

rantanplan
rantanplan

Reputation: 422

I just found a solution to this issue without discarding ValueObject type: In the form viewhelper, one has to handover explicitly the UID of the AbstractValueObject:

I.e.

<f:for each="{colors}" as="color">
    <f:form.radio property="color" value="{color.uid}" />
</f:for>

in place of <f:form.radio property="color" value="{color}" />, where {colors} is an array of AbstractValueObject.

The reason can be found in here: https://github.com/TYPO3/TYPO3.CMS/blob/master/typo3/sysext/extbase/Classes/Property/TypeConverter/PersistentObjectConverter.php

The annotation in the header says:

  • If the input is string, it is assumed to be a UID. Then, the object is fetched from persistence.
  • ...
  • If the input has NO identity property, but additional properties, we create a new object and return it.

A ValueObject has no identity by definition. So the only way to add it without creating a new one is by passing the UID to the property mapper as a string parameter.

Upvotes: 0

gSorry
gSorry

Reputation: 1274

In Your extension builder, model shoud be selected as Entity instead of Value Object. Or in model class change class definition to extend AbstractEntity instead of AbstractValueObject

# change this line:
class MyClass extends \TYPO3\CMS\Extbase\DomainObject\AbstractValueObject
# into this line:
class MyClass extends \TYPO3\CMS\Extbase\DomainObject\AbstractEntity

Upvotes: 1

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