/**
  * Apply scope on the query.
  *
  * @param \Illuminate\Database\Eloquent\Builder  $builder
  * @param \Illuminate\Database\Eloquent\Model  $model
  * @return void
  */
 public function apply(Builder $builder, Model $model)
 {
     $column = $model->getQualifiedParentColumn();
     $value = $model->getParentColumnValue();
     $builder->where($column, '=', $value);
     $this->addWithDrafts($builder);
 }