[英]Cannot save data to realm
I cannot seem to save data to realm in Swift! 我似乎无法在Swift中将数据保存到领域!
In one of my classes I have the following: 在我的一门课中,我有以下内容:
func getDeviceIdAndPersist(){
print("getDeviceIdAndPersist")
let realm = try! Realm()
let realmWallet = RealmWallet()
let realmResults = realm.objects(RealmWallet.self)
for results in realmResults {
guard results.deviceId != nil else {
realmWallet.deviceId = NSUUID().UUIDString
try! realm.write() {
realm.add(realmWallet, update: true)
}
return
}
}
}
And it does not seem to save the data! 而且它似乎并没有保存数据! I have code similar to this throughout my application and its saving data but this isn't!
在我的整个应用程序及其保存数据中都具有与此类似的代码,但事实并非如此!
Also I'm having trouble trying to persist my data, after i launch the application the data is stored using realm (which i can verify using the realm browser). 另外,我在尝试持久保存数据时遇到了麻烦,在启动应用程序后,数据使用领域存储(我可以使用领域浏览器进行验证)。 However, once I re-launch the application the data no longer exists in realm!
但是,一旦我重新启动该应用程序,数据将不再存在! Does anyone have any suggestions as to why the data would not be persisted?
是否有人对为什么不保留数据有任何建议?
EDIT 1 编辑1
Here is my realm class 这是我的境界课
class RealmWallet: Object {
dynamic var publicKey = NSData()
dynamic var preferredAddress = ""
dynamic var id = 0
let walletAddresses = List<Addresses>()
dynamic var fee: NSNumber = 0.0
dynamic var deviceId: String? = nil
dynamic var tempPreTax: String? = nil
dynamic var portalToken: String? = nil
let walletHasBackup = RealmOptional<Bool>()
let alreadyAskedForBluetooth = RealmOptional<Bool>()
let insecureMailSent = RealmOptional<Bool>()
let cameraAccessGranted = RealmOptional<Bool>()
let idNowSuccess = RealmOptional<Bool>()
dynamic var marketInfos = NSData()
override class func primaryKey() -> String? {
return "id"
}
}
EDIT 2 编辑2
The NSUUID isn't the only data which I cannot save, the following is another example of data which I cannot seem to save using Realm: NSUUID并不是我唯一无法保存的数据,以下是我似乎无法使用Realm保存的另一个数据示例:
onboardingModal!.bluetoothPressed = {() -> Void in
print("after onboardingModal")
self.cbManager = CBCentralManager(delegate: self, queue: nil)
print("REALM")
let realm = try! Realm()
do {
try! realm.write {
print("IN WRITE")
self.realmWallet.alreadyAskedForBluetooth.value = true
realm.add(self.realmWallet, update: true)
}
}
}
If your Results count is 0, it will not enter your for loop. 如果结果计数为0,则不会进入for循环。 Try this instead.
试试这个吧。
func getDeviceIdAndPersist() {
let realm = try! Realm()
let realmResults = realm.objects(RealmWallet.self)
guard results.count > 0 else {
let realmWallet = RealmWallet()
realmWallet.deviceId = NSUUID().UUIDString
try! realm.write() {
realm.add(realmWallet, update: true)
}
return
}
}
I faced the same problem. 我遇到了同样的问题。 In my realm class i was missing @objc dynamic in front of stored properties.
在我的领域类中,我在存储的属性前面缺少@objc动态。 So added it like below.
因此,如下所示添加了它。 Then it worked for me.
然后它对我有用。
@objc dynamic var address: Addres!
@objc dynamic var checklist: Checklist!
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