Realm Japan meetup #14

- Fine-grained Notifications
- Linking objects properties

Transcript

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   QSPQFSUJFT class Person: Object { dynamic var name = "" dynamic var age = 0 let dogs = List<Dog>() } class Dog: Object { dynamic var name = "" var owners: [Person] { return linkingObjects(Person.self, forProperty: "dogs") } }
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   QSPQFSUJFT class Person: Object { dynamic var name = "" dynamic var age = 0 let dogs = List<Dog>() } class Dog: Object { dynamic var name = "" var owners: [Person] { return linkingObjects(Person.self, forProperty: "dogs") } }
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    QSPQFSUJFT class Person: Object { dynamic var name = "" dynamic var age = 0 let dogs = List<Dog>() } class Dog: Object { dynamic var name = "" let owners = LinkingObjects(fromType: Person.self, property: "dogs") }
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    QSPQFSUJFT class Person: Object { dynamic var name = "" dynamic var age = 0 let dogs = List<Dog>() } class Dog: Object { dynamic var name = "" let owners = LinkingObjects(fromType: Person.self, property: "dogs") }
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    QSPQFSUJFT realm .objects(Dog) .filter("ANY owners.name = '...'")
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    let dogs = realm.objects(Dog) token = dogs.addNotificationBlock { (change: RealmCollectionChange) in switch change { case let .Initial(change): ... case let .Update(change, deletions, insertions, modifications): ... case let .Error(error): ... } }
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    public enum RealmCollectionChange<T> { case Initial(T) case Update(T, deletions: [Int], insertions: [Int], modifications: [Int]) case Error(NSError) }
17. token = dogs.addNotificationBlock { (change: RealmCollectionChange) in switch change { case let .Initial(change): self.tableView.reloadData() case let .Update(change, deletions, insertions, modifications): self.tableView .beginUpdates() self.tableView .deleteRowsAtIndexPaths( deletions.map { NSIndexPath(forRow: $0, inSection: 0) }, withRowAnimation: .Automatic) self.tableView .insertRowsAtIndexPaths( insertions.map { NSIndexPath(forRow: $0, inSection: 0) }, withRowAnimation: .Automatic) self.tableView.endUpdates() ...
18. token = dogs.addNotificationBlock { (change: RealmCollectionChange) in switch change { case let .Initial(change): self.tableView.reloadData() case let .Update(change, deletions, insertions, modifications): self.tableView .beginUpdates() self.tableView .deleteRowsAtIndexPaths( deletions.map { NSIndexPath(forRow: $0, inSection: 0) }, withRowAnimation: .Automatic) self.tableView .insertRowsAtIndexPaths( insertions.map { NSIndexPath(forRow: $0, inSection: 0) }, withRowAnimation: .Automatic) self.tableView.endUpdates() ...
19. token = dogs.addNotificationBlock { (change: RealmCollectionChange) in switch change { case let .Initial(change): self.tableView.reloadData() case let .Update(change, deletions, insertions, modifications): self.tableView .beginUpdates() self.tableView .deleteRowsAtIndexPaths( deletions.map { NSIndexPath(forRow: $0, inSection: 0) }, withRowAnimation: .Automatic) self.tableView .insertRowsAtIndexPaths( insertions.map { NSIndexPath(forRow: $0, inSection: 0) }, withRowAnimation: .Automatic) self.tableView.endUpdates() ...
20. favorites = realm .objects(Tweet) .filter("favorited = %@", true) .sorted("createdAt", ascending: false) token = favorites?.addNotificationBlock { [weak self] (change: RealmCollectionChange) in ... self?.tableView.reloadData() } timeline = realm .objects(Tweet) .sorted("createdAt", ascending: false) token = timeline?.addNotificationBlock { [weak self] (change: RealmCollectionChange) in ... self?.tableView.reloadData() } 3FTVMUTח㢌⻉ָ֮׏׋儗׌ֽ鸐濼ׁ׸׷״ֲח
    
    
21. favorites = realm .objects(Tweet) .filter("favorited = %@", true) .sorted("createdAt", ascending: false) token = favorites?.addNotificationBlock { [weak self] (change: RealmCollectionChange) in ... self?.tableView.reloadData() } timeline = realm .objects(Tweet) .sorted("createdAt", ascending: false) token = timeline?.addNotificationBlock { [weak self] (change: RealmCollectionChange) in ... self?.tableView.reloadData() } 3FTVMUTח㢌⻉ָ֮׏׋儗׌ֽ鸐濼ׁ׸׷״ֲח
    
    
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