2017-08-15 52 views
3

我是新来的领域,我想在我的项目中使用领域。在这里,我试图解析JSON并使用领域进行保存。当我在结果阵列错误试图环路发生使用领域和结果JSON

“试图修改写入事务之外的物体 - 先请一个RLMRealm实例beginwritetransaction”

这是JSON结果:

{"data":[{"id":1,"parent_id":0,"name":"JenniferMaenle","title":"Ms","phone":"","address":"Toled, ohio","email":"[email protected]","image":"44381525_2017.jpg","relation_id":5,"created_at":null,"updated_at":"2017-08-10 02:30:05"},{"id":2, "parent_id":1,"name":"Khadeeja","title":"","phone":"","address":"","email":"","image":"Khadeeja_2017-07-17.jpg","relation_id":2,"created_at":null,"updated_at":"2017-07-17 08:3:12"}]} 

我想解析JSON并将其保存在Realm数据库中。这里是我的尝试:

class Person: Object { 

dynamic var name = "" 
dynamic var title = "" 
dynamic var address = "" 

} 

override func viewDidLoad() { 
    super.viewDidLoad() 
    self.add() 

} 

func add(){ 

    guard let data = dataFromFile("ServerData") else { return } 

    let persons = Person() 

    do { 

     if let json = try JSONSerialization.jsonObject(with: data) as? [String: AnyObject] { 

      if let data = json["data"] as? [[String:AnyObject]]{ 

       for eachItem in data{ 
        persons.name = eachItem["name"] as! String 
        persons.title = eachItem["title"] as! String 
        persons.address = eachItem["address"] as! String 

        try! realm.write { 
         realm.add(persons) 
        } 
       } 

      } 
     } 
    } catch { 

     print("Error deserializing JSON: \(error)") 
    } 
} 

回答

2

不要修改persons对象并再次将其添加到领域。您看到的错误是因为您将人员添加到领域,然后再次在for eachItem in data的第二次迭代中对其进行编辑。在本次迭代中,Persons已被添加到领域,并且您尝试在领域写入事务之外为其指定一个新名称。这就是你看到错误的原因。为每个人创建一个新对象会更好。

func add(){ 
    guard let data = dataFromFile("ServerData") else { return } 

    do { 
     if let json = try JSONSerialization.jsonObject(with: data) as? [String: AnyObject] { 
      if let data = json["data"] as? [[String:AnyObject]]{ 
       for eachItem in data{ 
        let persons = Person() 
        persons.name = eachItem["name"] as! String 
        persons.title = eachItem["title"] as! String 
        persons.address = eachItem["address"] as! String 

        try! realm.write { 
         realm.add(persons) 
        } 
       } 

      } 
     } 
    } catch { 
     print("Error deserializing JSON: \(error)") 
    } 
} 
+1

谢谢@Yannick工作完美:) –

2

由于错误表示,需要大跳写内部的事务,

一种选择是单独写每个人:

for eachItem in data{ 
    let person = Person() 
    person.name = eachItem["name"] as! String 
    person.title = eachItem["title"] as! String 
    person.address = eachItem["address"] as! String 

    try! realm.write { 
     realm.add(person) 
    } 
} 

第二个选项是建立一个对象,然后写入:

for eachItem in data{ 
    let person = Person(); 
    person.name = eachItem["name"] as! String 
    person.title = eachItem["title"] as! String 
    person.address = eachItem["address"] as! String 
    persons.add(person) 
} 
try! realm.write { 
    realm. append(persons) 
} 

您可能需要对此进行少许更改,但这是主意。