[BUGFIX] transmitting value objects by identifier

[kaystrobach]

given:

/**
     * @param Article\Keyword $keyword
     */
    public function showKeywordAction(Article\Keyword $keyword) {
….

<f:link.action action="showKeyword" arguments="{keyword:keyword}" class="btn btn-default btn-sm“>

...

/**
 * @Flow\ValueObject
 */
class Keyword
{
    /**
     * @var string
     */
    protected $keyword;

    public function __construct($keyword) {
        $this->keyword = $keyword;
    }
...

url looks like: /article/showkeyword?keyword%5B__identity%5D=761842cbf8e2c16abac74a60aaeada1b6203f4a9

and the exceptions are:
#1297759968: Exception while property mapping for target type "SBS\Materialdatenbank\Domain\Model\Article\Keyword", at property path "": Missing constructor argument "keyword" for object of type "SBS\Materialdatenbank\Domain\Model\Article\Keyword“.
#1268734872: Missing constructor argument "keyword" for object of type "SBS\Materialdatenbank\Domain\Model\Article\Keyword".

I do use FLOW 3.0.0 in that project

[kaystrobach]

closed, followup in neos/flow-development-collection#90 ... 😢

[kitsunet]

The thing is, that I am not sure this is the best way to fix it. Actually the other side should be fixed. A value object should be represented by value(s) and not by identity. In this case the identity is even more a necessary technical construct that should be kept internally.

IMHO the url should look like:
article/showkeyword?keyword%5Bkeyword%5D=something
I guess that makes a change in the argument mapping for links necessary. Maybe @bwaidelich or @skurfuerst have an opinion on that?