$this minWidth(int $value) Set the "min width" constraint.

$this where(string $column, string $value = null) Set a "where" constraint

$this ratio(float $value) Set the "ratio" constraint.

$this maxWidth(int $value) Set the "max width" constraint.

Unique class Unique (

Dimensions class Dimensions (

array queryCallbacks() Get the custom query callbacks for the rule.

$this whereNull(string $column) Set a "where null" constraint on the query

$this whereNotNull(string $column) Set a "where not null" constraint on

string __toString() Convert the rule to a validation string.