BUG: Selectbox editor with Entity-DataSource and set to multiple selection does not show selected entities

[daniellienert]

Description

It is possible to receive entities via a DataSource and to select them in a SelectBox Editor. The selected entity is then saved to the property and the object is automatically dehydrated when the property is accessed.

That works fine when the inspector element is set to single-selection.

When the selector is configured with multiple: true, meant to save an array of references:

• Selecting multiple entities work
• The selection is successfully written to the database
• After reload the selection is loaded from the database and passed as an array to the UI
  -> The entities are not displayed as selected in the multi-selectobox

Steps to Reproduce

1. Configure references to an entity:

    user:
      type: array<Neos\Neos\Domain\Model\User>
      ui:
        label: Users
        reloadIfChanged: true
        inspector:
          group: file
          editor: Neos.Neos/Inspector/Editors/SelectBoxEditor
          editorOptions:
            placeholder: i18n
            dataSourceIdentifier: user-data-source
            multiple: true

2. Configure a data type

Neos:
  Neos:
    userInterface:
      inspector:
        dataTypes:
          'array<Neos\Neos\Domain\Model\User>':
            typeConverter: Neos\Flow\Property\TypeConverter\TypedArrayConverter
            editor: 'Neos.Neos/Inspector/Editors/SelectBoxEditor'
            editorOptions:
              dataSourceIdentifier: 'user-data-source'

3. Add a datasource

Expected behavior

After selecting users and saving the data, the selection is shown.

Actual behavior

After reload the selector stays empty

Affected Versions

Neos: latest

UI: latest

[paxuclus]

Hi @daniellienert,

I used to have the same problem (#2253) but found out that it was a configuration mistake on my end. Does this work for you?

[grebaldi]

I was able to reproduce this issue under 7.3, and I can confirm that #2327 (comment) fixes it. So, I'm closing this issue.

For anybody who passes by here:

Assuming the reproduction steps from above, your data source needs to change like this:

public function getData(NodeInterface $node = NULL, array $arguments = [])
{
    $users = $this->userService->getUsers();
    $result = [];

    foreach ($users as $user) {
        $result[] = [
-           'value' => [
-               '__identity' => $this->persistenceManager->getIdentifierByObject($user)
-           ],
+           'value' => $this->persistenceManager->getIdentifierByObject($user),
            'label' => $user->getLabel(),
            'icon' => 'user'
        ];
    }

    return $result;
}