Question

给出3种实体类型：User（会话参与者），Chat（2 User s之间的文字对话）和VideoCall（始终与Chat相关联{1}}，其中一个用户是呼叫者）。

如果API端点返回VideoCall对象，则映射到Chat和User的外键可以正常工作。

<DRVideoCall: 0x16f27f00> (entity: DRVideoCall; id: 0x182a1c90 <x-coredata://07D2A791-2CE9-46B1-8060-E288EC2ED4A4/DRVideoCall/p9> ; data: {
    caller = "0x16fbbff0 <x-coredata://07D2A791-2CE9-46B1-8060-E288EC2ED4A4/DRDoctor/p1>";
    callerId = 307;
    chat = "0x1826dca0 <x-coredata://07D2A791-2CE9-46B1-8060-E288EC2ED4A4/DRChat/p185>";
    chatId = 2748;
    state = calling;

}）

但如果它作为关系嵌套到另一个映射中，则不会，chat和caller属性为nil。

<DRVideoCall: 0x191bebb0> (entity: DRVideoCall; id: 0x1918b3d0 <x-coredata:///DRVideoCall/t24460E4B-9B6B-43F3-9981-62FDE53BFD5919> ; data: {
    caller = nil;
    callerId = 307;
    chat = nil;
    chatId = 2761;
    state = calling;

}）

RestKit是否可以使外键关系适用于嵌套对象？

事件映射

RKEntityMapping *eventMapping = [RKEntityMapping mappingForEntityForName:@"DREvent"
                                                    inManagedObjectStore:managedObjectStore];

[eventMapping addAttributeMappingsFromDictionary:@{ @"type" : @"type" }];

RKRelationshipMapping *eventCallMapping =
[RKRelationshipMapping relationshipMappingFromKeyPath:@"call"
                                            toKeyPath:@"call"
                                          withMapping:[DRVideoCall mappingInManagedObjectStore:managedObjectStore]];

[eventMapping addPropertyMapping:eventCallMapping];

视频通话映射

RKEntityMapping *videoMapping = [RKEntityMapping mappingForEntityForName:@"DRVideoCall"
                                  inManagedObjectStore:store];

[videoMapping addAttributeMappingsFromDictionary:@{ @"calling_user_id" : @"callerId",
                                                    @"chat_id" : @"chatId" }];

[videoMapping addConnectionForRelationship:@"chat" connectedBy:@{ @"chatId" : @"chatId" }];
[videoMapping addConnectionForRelationship:@"caller" connectedBy:@{ @"callerId" : @"userId" }];

UPD：以下是VideoCall JSON的样子

{ 
  "chat_id":2748,
  "calling_user_id":307,
  "state":"calling",
  "session_id":"...",
  "token":"..."
}

Event JSON：

{
    "call":{
        "calling_user_id":307,
        "chat_id":274,
        "session_id" = "...",
        "state":"calling",
        "token":"..."
    },
    "type":"call"
}

RestKit中的外键映射不适用于嵌套关系

0 个答案: