/**
* Saves the HasMany relational data. If id exists
* then it updates the record otherwise it will
* create the record.
*
* @param Model $relatedModel Model class
* @param HasMany $hasMany
* @param $data
* @param $relationName
*
* @throws \Exception
*/
protected function saveHasManyData($relatedModel, HasMany $hasMany, $data, $relationName)
{
if ($this->exists) {
$models = [];
$pk = $hasMany->getRelated()->primaryKey;
foreach ($data as $d) {
/** @var Model $model */
$model = $relatedModel::find(ArrayUtils::get($d, $pk));
if (!empty($model)) {
$fk = $hasMany->getPlainForeignKey();
$fkId = ArrayUtils::get($d, $fk);
if (null === $fkId) {
//Foreign key field is null therefore delete the child record.
$model->delete();
continue;
} elseif (!empty($fkId) && $fkId !== $this->{$this->primaryKey} && null !== ($parent = static::find($fkId))) {
//Foreign key field is set but the id belongs to a different parent than this parent.
//There the child is adopted by the supplied parent id (foreign key).
$relatedData = [$relationName => [$d]];
$parent->update($relatedData);
continue;
} else {
$model->update($d);
continue;
}
} else {
$model = new $relatedModel($d);
}
$models[] = $model;
}
$hasMany->saveMany($models);
}
}
/**
* Get the plain foreign key.
*
* @return string
* @static
*/
public static function getPlainForeignKey()
{
//Method inherited from \Illuminate\Database\Eloquent\Relations\HasOneOrMany
return \Illuminate\Database\Eloquent\Relations\HasMany::getPlainForeignKey();
}
