數據未保存在服務器

Question

感謝您回覆我的問題。我有信心，我會得到一些有價值的反饋並回復我的查詢。請找到下面的代碼。這是方法，在服務器中保存的數據，

-(NSMutableString *) saveChanges 
{ 
    NSMutableString *changes = [[NSMutableString alloc] init]; 
    NSString *completeXml = [[NSString alloc]init]; 

    for (NSString *key in objectToModify) 
    { 
     BaseModel *orig = [savedOriginalObject objectForKey:key]; 
     BaseModel *new = [objectToModify objectForKey:key]; 

     BaseModel *nested = Nil; 

     // BaseModel was added 
     if (orig == nil) 
     { 
      nested = [ModelReferences referenceNested:new]; 
      nested.EntityState = [[EntityState alloc] initWithIntValue:Added]; 
      NSMutableString *newXml = [self createObjectToXML:nested]; 
      completeXml = [completeXml stringByAppendingString:newXml]; 
     } 

     // BaseModel might be modified 
     else { 
       BaseModel *newNested = [ModelReferences referenceNested:new]; 
       BaseModel *origNested = [ModelReferences referenceNested:orig]; 

       NSMutableString *newXml = [self createObjectToXML:newNested]; 
       NSMutableString *origXml = [self createObjectToXML:origNested]; 

       completeXml = [completeXml stringByAppendingString:newXml]; 

       if (![newXml isEqualToString:origXml]) 
       { 
        nested = newNested; 
        nested.EntityState = [[EntityState alloc] initWithIntValue:Modified]; 
       } 

      } 

     if (nested != Nil) 
      [changes appendString:[self createObjectToXML:nested]]; 
    } 

    //refreshes both dictionaries (objectToModify and savedOriginalObject) 
    [self refreshSavedOriginalObject:completeXml]; 


    if ([changes length] > 0) 
     return changes; 
    else 
     return Nil; 
} 

當過我做任何改變其得到保存，但是當我想添加一個新的數據或對象的服務器不節能。例如，我想添加一個對象在NSMutableDictionary，添加它沒有得到保存後。請讓我知道，如果我必須提供更多關於我的編碼的信息。

Answer 1

解決方法是：通過爲給定的基礎模型生成UUID，一旦生成UUID，基礎模型循環就會將其視爲非原型，並將其作爲新的UUID並創建一個位置。具有新UUID的Base模型將被髮送到服務器並同時保存。