I am trying to use RealmGridController to display elements in a relationship list. I have an object // remove the if from the while loop, as it really has no effect
while ($row = $result->fetch_assoc()) {
// you don't need the isset checks; if $row is set, then each value in it will be set
$selectcomment2[] = 'same' . $row['cityID'] . $row['comment']);
}
// if there's nothing in the comments after the loop, then put 'different' in it
if (!$selectcomment2) {
$selectcomment2[] = 'different';
}
that has a list of Collection:
ItemsI would like to use a RealmGridController to show all of the items in the class Collection: Object {
let items = List<Item>()
dynamic var name: String?
}
class Item: Object {
dynamic var name: String?
}
property of a specific items. RealmGridController uses RBQFetchedResultsController to manage its data loading, and the fetched results controller uses an entity name and a predicate to fetch the list of items to show.
How can I express the list of items in a relationship collection as an entity name and predicate?
A few things I've tried that haven't worked:
ListIt seems like displaying a Realm entityName = Item.className()
// 'Invalid predicate', reason: 'Predicate with IN operator must compare a KeyPath with an aggregate'
basePredicate = NSPredicate(format: "SELF in %@.items", collection)
// Same
basePredicate = NSPredicate(format: "SELF in %@", collection.items)
// 'Invalid predicate', reason: 'Predicate with ANY modifier must compare a KeyPath with RLMArray with a value'
basePredicate = NSPredicate(format: "ANY SELF in %@", collection.items)
as the contents of a fetched results controller should be fairly straightforward but I just can't seem to figure it out. Thanks!
答案 0 :(得分：1)
RBQFetchedResultsController不支持使用List作为数据源。我花了一些时间来研究如何使用KVO管理通知与RBQRealmNotificationManager，但从未完成。
目前，我建议查看Realm在v0.98.0中添加的新收集通知支持。您可以注册以在List中的任何对象更新时收到通知。这仍然没有提供索引更改信息，但这很快就会到来。