belongsTo( __NAMESPACE__.'\Subscriber', 'subscriber_id', 'id' ); } public function scopeFilterByKey($query, $key) { if ($key) { $query->where('key', $key); } return $query; } public function setValueAttribute($value) { $this->attributes['value'] = maybe_serialize($value); } public function getValueAttribute($value) { return maybe_unserialize($value); } }