EventSerialization.php

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<?php

namespace Elgg\Traits\Notifications;

trait EventSerialization {
    
    public function __serialize() {
        $data = [];
        
        $data['action'] = $this->action;
        if ($this->object instanceof \ElggData) {
            if ($this->object instanceof \ElggEntity) {
                $data['object_id'] = $this->object->guid;
            } else {
                $data['object_id'] = $this->object->id;
            }
            
            $data['object_type'] = $this->object->getType();
            $data['object_subtype'] = $this->object->getSubtype();
        }
        
        if ($this->actor) {
            $data['actor_guid'] = $this->actor->guid;
        }
        
        return $data;
    }

    public function __unserialize($data) {
        if (isset($data['action'])) {
            $this->action = $data['action'];
        }
        
        if (isset($data['object_id']) && isset($data['object_type'])) {
            $object_id = $data['object_id'];
            switch ($data['object_type']) {
                case 'object':
                case 'user':
                case 'group':
                case 'site':
                    $this->object = get_entity($object_id);
                    break;
                case 'annotation':
                    $this->object = elgg_get_annotation_from_id($object_id);
                    break;
                case 'metadata':
                    $this->object = elgg_get_metadata_from_id($object_id);
                    break;
                case 'relationship':
                    $this->object = elgg_get_relationship($object_id);
                    break;
            }
        }
        
        if (isset($data['actor_guid'])) {
            $this->actor = get_entity($data['actor_guid']);
        }
    }
}