上下文不保存更改与错误1550 [英] Context does not save the changes with error 1550
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问题描述
我正在尝试更新实体并保存更改。我总是遇到以下错误：
I'm trying to update an entity and save the changes. I'm getting always the following error:
The operation couldn’t be completed. (Cocoa error 1550.)
方法：
$ b
Method:
- (BOOL) updateEvent:(EventDTO*)eventDTO{
BOOL saved = YES;
[self getDataCoreContext];
if (context) {
NSError *error;
Event *myEvent = (Event *)[context existingObjectWithID:eventDTO.entitysID error:&error];
myEvent.name = eventDTO.name;
myEvent.descrptn = eventDTO.description;
myEvent.date = eventDTO.date;
myEvent.locLatitude = [eventDTO getLatidude];
myEvent.locLongitude = [eventDTO getLongitude];
myEvent.numberOfInvited= [NSNumber numberWithInteger:[eventDTO.invitedMembers count]];
for (User *invUser in eventDTO.invitedMembers) {
[myEvent addInvitedUsersObject:invUser];
}
for (User *accUser in eventDTO.acceptedMembers) {
[myEvent addAcceptedUsersObject:accUser];
}
myEvent.createdBy = (User*)[context existingObjectWithID:eventDTO.creator.objectID error:&error];
if (![context save:&error]) {
NSLog(@"Whoops, couldn't save: %@", [error localizedDescription]);
saved = NO;
}
}
return saved;
}
它让我困惑我真的，因为我没有得到它的问题是什么。我也试图获取对象并修改它。但是同样的错误。
Its confusing me really, because i m not getting it what the problem is.. I have also tried to fetch the object and modify it. But same error.
任何解释或提示都很棒。
Any explanation or hints would be great.
EDIT（完全错误对象）1： / strong>
EDIT (Complete Error Object) 1:
ERROR: Error Domain=NSCocoaErrorDomain Code=1550 "The operation couldn’t be completed. (Cocoa error 1550.)" UserInfo=0x14a00130 {NSValidationErrorObject=<Event: 0x11024aa0> (entity: Event; id: 0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8> ; data: {
acceptedUsers = (
);
createdBy = "0x11024ae0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p1>";
date = "2013-05-11 16:15:09 +0000";
descrptn = Auauuauau;
invitedUsers = (
"0x11069cd0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p3>",
"0x1104da60 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p6>",
"0x1104da40 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p4>",
"0x110687a0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p2>",
"0x1104da50 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p5>"
);
locLatitude = "51.45373916625977";
locLongitude = "7.264190196990967";
name = lALLALLa;
numberOfInvited = 5;
}), NSValidationErrorKey=invitedUsers, NSLocalizedDescription=The operation couldn’t be completed. (Cocoa error 1550.), NSValidationErrorValue=Relationship 'invitedUsers' on managed object (0x11024aa0) <Event: 0x11024aa0> (entity: Event; id: 0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8> ; data: {
acceptedUsers = (
);
createdBy = "0x11024ae0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p1>";
date = "2013-05-11 16:15:09 +0000";
descrptn = Auauuauau;
invitedUsers = (
"0x11069cd0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p3>",
"0x1104da60 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p6>",
"0x1104da40 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p4>",
"0x110687a0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p2>",
"0x1104da50 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p5>"
);
locLatitude = "51.45373916625977";
locLongitude = "7.264190196990967";
name = lALLALLa;
numberOfInvited = 5;
}) with objects {(
<User: 0x110accb0> (entity: User; id: 0x11069cd0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p3> ; data: {
acceptedEvents = "<relationship fault: 0x97084a0 'acceptedEvents'>";
createdEvents = "<relationship fault: 0x97017b0 'createdEvents'>";
deviceInfo = nil;
displayName = "Daniel Higgins";
invitedToEvents = (
"0x110abbb0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x110abba0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p5>"
);
memberShipDetails = nil;
phoneNumber = "555-478-7672";
realName = "Daniel Higgins";
status = "WAZZUUP?!";
userID = nil;
}),
<User: 0x110d0e10> (entity: User; id: 0x1104da60 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p6> ; data: {
acceptedEvents = "<relationship fault: 0x14aa0850 'acceptedEvents'>";
createdEvents = "<relationship fault: 0x13c0f290 'createdEvents'>";
deviceInfo = nil;
displayName = "Hank Zakroff";
invitedToEvents = (
"0x110abbb0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x110abba0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p5>"
);
memberShipDetails = nil;
phoneNumber = "(555) 766-4823";
realName = "Hank Zakroff";
status = "WAZZUUP?!";
userID = nil;
}),
<User: 0x110ad1a0> (entity: User; id: 0x1104da40 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p4> ; data: {
acceptedEvents = "<relationship fault: 0x16632850 'acceptedEvents'>";
createdEvents = "<relationship fault: 0x16632890 'createdEvents'>";
deviceInfo = nil;
displayName = "John Appleseed";
invitedToEvents = (
"0x110abbb0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x110abba0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p5>"
);
memberShipDetails = nil;
phoneNumber = "888-555-5512";
realName = "John Appleseed";
status = "WAZZUUP?!";
userID = nil;
}),
<User: 0x110b3220> (entity: User; id: 0x110687a0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p2> ; data: {
acceptedEvents = "<relationship fault: 0x110f50f0 'acceptedEvents'>";
createdEvents = "<relationship fault: 0x16628a60 'createdEvents'>";
deviceInfo = nil;
displayName = "Kate Bell";
invitedToEvents = (
"0x110abbb0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x110abba0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p5>"
);
memberShipDetails = nil;
phoneNumber = "(555) 564-8583";
realName = "Kate Bell";
status = "WAZZUUP?!";
userID = nil;
}),
<User: 0x110ace30> (entity: User; id: 0x1104da50 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/User/p5> ; data: {
acceptedEvents = "<relationship fault: 0x1a4c6350 'acceptedEvents'>";
createdEvents = "<relationship fault: 0x1a4c6390 'createdEvents'>";
deviceInfo = nil;
displayName = "Anna Haro";
invitedToEvents = (
"0x110abbb0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x110abba0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p5>"
);
memberShipDetails = nil;
phoneNumber = "555-522-8243";
realName = "Anna Haro";
status = "WAZZUUP?!";
userID = nil;
})
)}}
EDIT 2：
根据对@Sulthan的解释，我发现了问题。
According to the nice explanation of @Sulthan i found the Problem.
检查此用户是否已存在于该事件中：
In my for loops i had to check if this User already exist in that Event:
for (User *invUser in eventDTO.invitedMembers) {
BOOL existsInInvitedList = [[eventDTO.invitedMembers valueForKeyPath:@"objectID"] containsObject:invUser.objectID];
if (!existsInInvitedList) {
[myEvent addInvitedUsersObject:invUser];
}
}
for (User *accUser in eventDTO.acceptedMembers) {
BOOL existsInAcceptedList = [[eventDTO.acceptedMembers valueForKeyPath:@"objectID"] containsObject:accUser.objectID];
if (!existsInAcceptedList) {
[myEvent addAcceptedUsersObject:accUser];
}
}
所以没有重复。 p>
So there were no duplicates in there..
推荐答案
说明：
NSValidationErrorObject=<Event: 0x11024aa0> ...
这是您尝试保存和验证失败的对象
This is the object that you trying to save and validation failed for it
NSValidationErrorKey=invitedUsers
This is the attribute (relationship) that failed validation
NSValidationErrorValue=Relationship 'invitedUsers' on managed object (0x11024aa0)
验证失败。一切都是关系中的用户列表...
What failed validation. Everything else is the list of the users in the relationship...
我不知道你的对象模型，但是例如下面似乎是错误的：
I don't know your object model but for example the following seems to be wrong:
invitedToEvents = (
"0x110abbb0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x166c0840 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p8>",
"0x110abba0 <x-coredata://9F88714B-84EC-4E8F-9BC4-78E365A8FE0A/Event/p5>"
);
请注意，其中一个事件有两次（它具有相同的对象标识）。
Note that one of the events is there twice (it has the same object id).
这篇关于上下文不保存更改与错误1550的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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