SilverShop\Discounts\Extensions\Constraints\DiscountConstraint::filter
Filter a list of discounts according to this constraint.
The filtering must always allow empty data through, for example Value = 'X' OR Value IS NULL See predefined constraints for examples.
Signature
public function filter(DataList
$discounts )
Parameters
$discounts
— SilverStripe\ORM\DataList- discount list constrain
Returns
- DataList