Q: Delete relations - best practice?

[exodus4d]

Hi,

I´m looking for the most elegant/clean way, for deleting has-one relations.
Setup:

class CharacterModel extends BasicModel {
    protected $table = 'character';
    protected $fieldConf = [
        'characterLog' => [
            'has-one' => ['Model\CharacterLogModel', 'characterId']
       ]
    ];
}

class CharacterLogModel extends BasicModel {
    protected $table = 'character_log';
    protected $fieldConf = [
        'characterId' => [
            'type' => Schema::DT_INT,
            'index' => true,
            'unique' => true,
            'belongs-to-one' => 'Model\CharacterModel'
        ]
    ];
}

I have a character and character_log stored in DB.
Now i would like to delete the relational character_log entry and keep the character entry. Therefore I have a deleteLog(); method in the CharacterModel Class:

public function deleteLog(){
    if(is_object($this->characterLog)){
        $this->characterLog->erase();
        $test = $this->save();
        var_dump($test->cast());
        var_dump($this->cast());
    }
}

This works but it does not seem to be the "right" way :) - The $this->save() is required, after erasing the character_log relation, to get a "updated" character model without the log. The second var_dump() (var_dump($this->cast());) still has the relational object. Is there a way to "auto-save" $this when a relation object was removed?

---

Then i tried something like this:

if(is_object($this->characterLog)){
    $this->clear('characterLog');
    $test = $this->save();
    var_dump($test->cast());
    var_dump($this->cast());
}

This does not delete the character_log row, it just set characterId column to null. And finally i tried this:

if(is_object($this->characterLog)){
    $this->characterLog = null;
    $test = $this->save();
    var_dump($test->cast());
    var_dump($this->cast());
}

This works as well but in any case, i have to use the returned $test variable,$this is not automatically updated after save. Is there are more elegant way to achieve what i want.