Sam Minnee 0d7c5a9ece NEW Add/remove callbacks on RelationList
This provides a mechanism for adjusting the behaviour of these
relations when building more complex data models.

For example the following example has a status field incorporates a
Status field into the relationship:

```php
function MyRelation() {
  $rel = $this->getManyManyComponents(‘MyRelation’);
  $rel = $rel->filter(‘Status’, ‘Active’);

  $rel->addCallbacks()->add(function ($relation, $item, $extra) {
    $item->Status = ‘Active’;
    $item->write();
  });
}
```

Introduces a new library dependency: http://github.com/sminnee/callbacklist
2020-09-18 13:33:42 +12:00
..
2020-08-06 11:18:39 +12:00
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2020-09-10 17:08:13 +12:00
2018-01-16 18:39:30 +00:00