Question

我正在尝试使用对象加载器从API获取对象，需要传递一个类型作为查询参数（例如http://example.com/api/households/:householdId/checklist_items?kind=todo），但无论我尝试注册资源路径的哪种方式似乎不想找到我的映射。

我正在设置这样的映射：

RKObjectMapping* mapping = [RKObjectMapping mappingForClass:[RMChecklistItem class]];
[mapping mapKeyPath:@"id" toAttribute:@"checklistItemId"];
[mapping mapKeyPath:@"kind" toAttribute:@"kind"];
[mapping mapKeyPath:@"title" toAttribute:@"title"];
[mapping mapKeyPath:@"completed" toAttribute:@"completed"];
[mapping mapKeyPath:@"abilities" toAttribute:@"abilities"];
[mapping mapKeyPath:@"comments" toRelationship:@"comments" 
        withMapping:[provider objectMappingForClass:[RMComment class]]];

使用基本路径和带有查询字符串的版本将对象映射提供程序注册到它：

[provider addObjectMapping:mapping];
[provider setObjectMapping:mapping forResourcePathPattern:@"/api/households/:householdId/checklist_items"];
[provider setObjectMapping:mapping forResourcePathPattern:@"/api/households/:householdId/checklist_items?kind=:kind"];

但是当我尝试使用它时：

NSDictionary *params [NSDictionary dictionaryWithObject:@"todo" forKey:@"kind"];
NSString *path = [NSString stringWithFormat:@"/api/households/%i/checklist_items", householdId.intValue];
[[RKObjectManager sharedManager] loadObjectsAtResourcePath:[path stringByAppendingQueryParameters:params] usingBlock:^(RKObjectLoader *loader) {
    loader.onDidLoadObjects = ^(NSArray *objects) {
        NSLog(@"%@", objects);
    };
    loader.onDidFailWithError = ^(NSError *error) {
        NSLog(@"%@", error);
    };
    loader.onDidFailLoadWithError = ^(NSError *error) {
        NSLog(@"%@", error);
    };
}];

很糟糕：

2012-07-20 12:13:18.533 roommates[22399:13d03] D restkit.object_mapping:RKObjectMapper.m:336 Performing object mapping sourceObject: (
        {
        abilities =         {
            destroy = 1;
        };
        comments =         (
        );
        completed = 0;
        id = 44;
        kind = todo;
        title = "and do the dishes";
    },
        {
        abilities =         {
            destroy = 1;
        };
        comments =         (
                        {
                body = "your!";
                "created_at" = "2012-07-18T22:20:08-05:00";
                "creator_id" = 16;
                id = 70;
            }
        );
        completed = 0;
        id = 43;
        kind = todo;
        title = "pick you shit up";
    },
        {
        abilities =         {
            destroy = 1;
        };
        comments =         (
                        {
                body = "did it";
                "created_at" = "2012-07-18T22:19:56-05:00";
                "creator_id" = 16;
                id = 69;
            }
        );
        completed = 0;
        id = 40;
        kind = todo;
        title = "Pay Rent";
    }
)
 and targetObject: (null)
2012-07-20 12:13:18.539 roommates[22399:13d03] T restkit.object_mapping:RKObjectMapper.m:293 Examining keyPath 'users' for mappable content...
2012-07-20 12:13:18.539 roommates[22399:13d03] D restkit.object_mapping:RKObjectMapper.m:120 Found a collection containing only NSNull values, considering the collection unmappable...
2012-07-20 12:27:47.702 roommates[22399:13d03] D restkit.object_mapping:RKObjectMapper.m:303 Found unmappable value at keyPath: users
2012-07-20 12:27:47.705 roommates[22399:13d03] D restkit.object_mapping:RKObjectMapper.m:367 The following operations are in the queue: (
)
2012-07-20 12:27:51.065 roommates[22399:13d03] W restkit.object_mapping:RKObjectMapper.m:87 Adding mapping error: Could not find an object mapping for keyPath: ''
2012-07-20 12:27:51.066 roommates[22399:13d03] E restkit.network:RKObjectLoader.m:234 Encountered errors during mapping: Could not find an object mapping for keyPath: ''

Answer 1

所以观察调试器中的流程我遇到了RKObjectMappingProvider的mappingForPatternMatchingString:context:，它调用了RKPathMatcher的matchesPath:string tokenizeQueryStrings:NO parsedArguments:nil所以我想这是设计的。

我真的只为查询参数'todo'和'shopping'提供了两个可能的值，因此同时注册这两个值并不合理。

更新：我提交了一个拉取请求，将其更改为解析查询字符串中的令牌：https://github.com/RestKit/RestKit/pull/871

如何将RestKit资源路径映射与查询字符串一起使用？

1 个答案: