Reason

Sometimes, you need to know not only can be things done or not, but also why things can be done.

Reason status

Status describes current state of reason. It must be convertible to integer value - status weight. Status with higher weight worse then smaller weight. (Make sense for appending and joining.)

Appending reasons (orX)

Reasons can be appended to other reasons. It operations can be matched with logical or. Reason with the lowest weight wins. If two reasons have same weight, those messages will be merged.

// weight: 1
// messages: foo, bar
$first = new Reason(...);

// weight: 2
// messages: baz
$second = new Reason(...);

// weight: 1
// messages: foo, bar
$firstOrSecond = $first->orX($second);

// weight: 1
// messages: foobar
$third = new Reason(...);

// weight: 1
// messages: foo, bar, foobar
$firstOrThird = $first->orX($third);

Joining reasons (andX)

Same behavior as appending, but reason with the highest weight wins. Looks like logical and operation.

// weight: 1
// messages: foo, bar
$first = new Reason(...);

// weight: 2
// messages: baz
$second = new Reason(...);

// weight: 2
// messages: baz
$firstAndSecond = $first->andX($second);

// weight: 1
// messages: foobar
$third = new Reason(...);

// weight: 1
// messages: foo, bar, foobar
$firstAndThird = $first->andX($third);

Testing

$ vendor/bin/phpunit