如何更新 CloudKit 中记录类型上的字段？

Posted 2023-02-24

【中文标题】如何更新 CloudKit 中记录类型上的字段？

【英文标题】：How to update a field on a Record Type in CloudKit?

【发布时间】：2016-07-20 19:17:08

【问题描述】：

我正在尝试更新 CloudKit 中的现有记录，但我正在创建新记录而不是更改值！这是代码：

func pairing(phone: String, ctid: String) 
    ctUsers = [CKRecord]()
    print("THE PHONE IS: \(phone)\n")

    let publicData = CKContainer.default().publicCloudDatabase
    let predicate = Predicate(format: "phone == %@", phone)
    let query = CKQuery(recordType: "Elder", predicate: predicate)

    publicData.perform(query, inZoneWith: nil)  (results: [CKRecord]?, error: NSError?) -> Void in
        if error != nil 
            print(error?.localizedDescription)
        

        if let users = results 
            self.ctUsers = users
            print("\nHow many users in cloud: \(self.ctUsers.count)\n")

            if self.ctUsers.count != 0 

                let user = CKRecord(recordType: "Elder")
                user["careTakerId"] = ctid

                let publicData = CKContainer.default().publicCloudDatabase
                publicData.save(user, completionHandler:  (record: CKRecord?, error: NSError?) in
                    if error == nil 

                        DispatchQueue.main.asynchronously(execute:  () -> Void in
                            print("CARETAKER updated successfully\n")
                        )
                    
                    else 
                        print("\nHUEHUEHUEHUE\n")
                        print(error?.localizedDescription)
                    
                )
            
            else 
                print("\nELDER ISN'T IN CLOUD\n")
                print(error?.localizedDescription)
            
        
    

快速解释：首先我要获取长者的电话号码（每个长者都有不同的电话）并检查此电话号码是否在云端。如果是，则更新此长者的 careTakerId，具体来说！

在这里你可以看到正在创建这个“No Name”记录，上面的记录保持不变

有什么想法吗？

【问题讨论】：

哦，别介意语法，我使用的是 xcode 8 beta 2

【参考方案1】：

做最简单的方法，获取记录、更新和保存：

    let recordID = CKRecordID(recordName: "[record_name_here]")

    database.fetch(withRecordID: recordID)  record, error in

        if let record = record, error == nil 

            //update your record here

            self.database.save(record)  _, error in
                completion?(error)
               
        
    

【讨论】：

谢谢，很有用。

【参考方案2】：

现在才意识到问题出在哪里：

publicData.perform(query, inZoneWith: nil)  (results: [CKRecord]?, error: NSError?) -> Void in
    if error != nil 
        print(error?.localizedDescription)
    

    if let users = results 
        self.ctUsers = users
        print("\nHow many users in cloud: \(self.ctUsers.count)\n")

        if self.ctUsers.count != 0 

            let user =  users.first //CKRecord(recordType: "Elder")
            user?["careTakerId"] = ctid

            let publicData = CKContainer.default().publicCloudDatabase
            publicData.save(user, completionHandler:  (record: CKRecord?, error: NSError?) in
                if error == nil 

                    DispatchQueue.main.asynchronously(execute:  () -> Void in
                        print("CARETAKER updated successfully\n")
                    )
                
                else 
                    print("\nHUEHUEHUEHUE\n")
                    print(error?.localizedDescription)
                
            )
        
        else 
            print("\nELDER ISN'T IN CLOUD\n")
            print(error?.localizedDescription)
        
    

我真的是在创造一个新纪录！我只需要访问 results 变量，即 CKRecord 的向量，然后更改并保存字段！