Hi! i'm need to show custom data in a GridField, to achieve that this is the part of my code

class Player extends DataObject {
	...
	static $has_many = array(
		'Scores' => 'Score',
	);
	
	...
	
	public function getCMSFields() {
		
		$fields = parent::getCMSFields();
		

		$config = GridFieldConfig_RecordEditor::create();
		$config->getComponentByType('GridFieldDataColumns')->setDisplayFields(array(
					'Points' => 'Points'
		));

		$scores= new GridField(
				'Scores', // Field name
				'Score', // Field title
				$this->myScores(), // List of all related Scores
				$config
		);

		$fields->addFieldToTab('Root.Main', $scores);
		
		return $fields;
	}
	
	
	public function myScores(){
		$controller = Controller::curr();
		$bread = $controller->breadcrumbs();
		$match= $bread->last();
		$matcid= end(explode("/",$partido->Link));// the id of the match that this player belongs
		return Score::get("Score", "MatchID = $matcid AND PlayerID = $this->ID");
	}
}

I'm passing $this->myScores() to the gridfield and works fine, shows me the list of Scores with the filter applied in the function "myScores", I pass this function because a "Score" have a relation with another class ("Match") too, and if I pass to the gridfield $this->Scores, shows me scores that dont have to show.

well this part is working. the problem is when I want to add a new score, when I click in the green "add Score" button, takes me to the new score screen, and when i save it, the record is saved but PlayerID is set to null in the database.

if I change $this->myScore() for $this->Scores() in the gridfield, when I save a new Score the PlayerID is saved ok.

Im very new in silverstripe, and any help will be apreciatted

my version of ss is 3.0.5.

PD: sorry for my bad english.