我无法在 MagicalRecord 中找到 FirstByAttribute

Question

在 MagicalRecords 的文档中给出

If you have a unique way of retrieving a single object from your data store you should do this

Person *person = [Person MR_findFirstByAttribute:@"FirstName" withValue:@"Forrest"];

我正在做这个

DX *foundDX = [DX MR_findFirstByAttribute:@"code" withValue:cell.DXCodeName];
NSLog(@"Found DX: %@, Cell Code Name is: %@",foundDX,cell.DXCodeName.text);

如果我知道该值在实体中，它仍然会给我

Found DX: (null), Cell Code Name is: F45

但我在 DX 实体中已经有了这个值

那么我错过了什么？

Answer 1

很抱歉把它放在这里，但我还没有资格发表评论。您是否尝试过传递值 cell.DXCodeName.text?

我无法在 MagicalRecord 中找到 FirstByAttribute

I'm unable to findFirstByAttribute in MagicalRecord

ios

objective-c

core-data

magicalrecord