Question

我从服务器

收到一个对象

var profileDictionary = users.allDocuments[0].valueForKey("profile") 
print("profileDictionary: \(profileDictionary)")

看起来像底部的控制台输出。

我想更改[name] [first]字段（遗憾的是Elon还不是客户），并将对象发送回服务器以更新记录。我怎样才能做到这一点？

我试过了：

profileDictionary["name"]!["first"] as String = "Karlos"

但是它给出了错误：无法分配给'String'类型的不可变表达式

我也试过

profileDictionary!["name"]!!["first"]  = "Karlos"

那么错误是：无法分配给'AnyObject？'

类型的不可变表达式

如果我将profileDictionary更改为NSDictionary

var profileDictionary = users.allDocuments[0].valueForKey("profile") as! NSDictionary
profileDictionary["name"]!["first"]  = "Karlos"

我得到了同样的错误：无法分配给'AnyObject？'

类型的不可变表达式

使用SwiftyJSON我可以很容易地改变一个值，但它会弄乱类型，例如将1变为真。

如何更改此对象中的值？

非常感谢任何帮助！谢谢。

控制台输出

Optional({
    address =     {
        city = "";
        country = nor;
        lineOne = "";
        lineTwo = "";
        zip = "";
    };
    card =     {
        last4 = 4242;
        verified = 1;
    };
    filledOut = 1;
    name =     {
        first = Elon;
        last = Musk;
    };
    phone = 911;
    validated = 1;
})

Answer 1

试试这个（完全快速实施）：

var profileDictionary = ["address" : ["city" : "" , "country" : "nor" , "lineOne" : "" , "lineTwo" : "", "zip" : ""], "card" : ["last4" : 4242 , "verified" : 1] , "filledOut" : 1 , "name" : ["first" : "Elon" , "last" : "Musk"] , "phone" : 911 , "validated" : 1]

print(profileDictionary) // This prints first name as Elon

var nameDict = profileDictionary["name"] as! Dictionary<String,String>
nameDict["first"] = "Karlos"
profileDictionary["name"] = nameDict

print(profileDictionary) // This prints first name as Karlos

Answer 2

试试这个;

    if let profileDictionary:NSMutableDictionary = users.allDocuments[0].valueForKey("profile") as? NSMutableDictionary {

        if let nameDict:NSMutableDictionary = profileDictionary["name"] as? NSMutableDictionary {
            nameDict["first"] = "Karlos";
        }

        print("profileDictionary: \(profileDictionary)")
    }

更改json对象的值

2 个答案: