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我正在我的一个应用程序上从 RestKit 0.10 迁移到 0.20。我查看了https://github.com/RestKit/RestKit/wiki/Upgrading-from-v0.10.x-to-v0.20.0上的页面，但没有看到这个问题。

  • 编辑 2013-02-09 添加映射代码和 loadObjectData 方法 *

RestKit 是通过 CocoaPods 添加的。

这在 RK 0.10 中工作，然后在 RK 0.20 中编译。这个片段做：

  1. 创建 fetchRequest
  2. 添加谓词
  3. 添加排序
  4. 获取中继器数组

我有以下进口，按顺序：

// RestKit
#import <RestKit/RestKit.h>
#import <RestKit/CoreData.h>

// Core Data
#import "Repeaters.h"

代码片段：

    NSArray *sortDescriptors;
*1  NSFetchRequest *sortedRequest = [Repeaters fetchRequest]; // RestKit 0.10
    // NSFetchRequest *sortedRequest = [NSFetchRequest fetchRequestWithEntityName:@"Repeaters"]; // RestKit 0.20?

    // Predicate Filter by Grouping
    NSString *predicateString = @"";

    if ([appDelegate getIncludeIrlpPreference]) {
        predicateString =  [predicateString stringByAppendingFormat:@"(grouping LIKE 'irlp')"];
    }

    if ([appDelegate getIncludeWsiPreference]) {
        if([predicateString length] > 0) predicateString = [predicateString stringByAppendingFormat:@" OR "];
        predicateString =  [predicateString stringByAppendingFormat:@"(grouping LIKE 'winsystem')"];
    }

    // Distance Sort
    if([selectedSegmentString isEqualToString:kRepeaterSortDistance]) {

        // Sort by distance
        NSSortDescriptor * sortBydistance = [[NSSortDescriptor alloc] initWithKey:@"distance" ascending:YES];
        sortDescriptors = [NSArray arrayWithObjects:sortBydistance, nil ];

    }

    // Add the Sort to the fetch request
    [sortedRequest setSortDescriptors:sortDescriptors];

    // Add the Predicate to the fetch request
    NSPredicate *predicate = [NSPredicate predicateWithFormat:predicateString];
    [sortedRequest setPredicate:predicate];

    // Fetch the data - filtered and sorted
*2  self.repeaters = [Repeaters objectsWithFetchRequest:sortedRequest]; // RestKit 0.10

Repeaters 类的映射代码：

 RKManagedObjectMapping *repeatersMapping = [RKManagedObjectMapping mappingForEntityWithName:kEntityRepeaters inManagedObjectStore:objectStore];
 [repeatersMapping mapKeyPath:@"callSign" toAttribute:@"callSign"];
 [repeatersMapping mapKeyPath:@"country" toAttribute:@"country"];
 [repeatersMapping mapKeyPath:@"freqOffsetPl" toAttribute:@"freqOffsetPl"];
 [repeatersMapping mapKeyPath:@"grouping" toAttribute:@"grouping"];
 [repeatersMapping mapKeyPath:@"latitudeDefault" toAttribute:@"latitudeDefault"];
 [repeatersMapping mapKeyPath:@"longitudeDefault" toAttribute:@"longitudeDefault"];
 [repeatersMapping mapKeyPath:@"locationElevation" toAttribute:@"locationElevation"];
 [repeatersMapping mapKeyPath:@"node" toAttribute:@"node"];
 [repeatersMapping mapKeyPath:@"notes" toAttribute:@"notes"];
 [repeatersMapping mapKeyPath:@"repeaterId" toAttribute:@"repeaterId"];
 [repeatersMapping mapKeyPath:@"serviceArea" toAttribute:@"serviceArea"];
 [repeatersMapping mapKeyPath:@"serviceState" toAttribute:@"serviceState"];
 [repeatersMapping mapKeyPath:@"url" toAttribute:@"url"];
 repeatersMapping.primaryKeyAttribute = kEntityRepeaterKey;
 [wsiObjectManager.mappingProvider registerMapping:repeatersMapping withRootKeyPath:@"winSystem.winSystemRepeaters.winSystemRepeater"];

加载对象数据方法：

- (void)loadObjectData {

        [[RKObjectManager sharedManager] loadObjectsAtResourcePath:kWinSystemInfoXml delegate:self];
}

Xcode 错误：

*1 RepeatersTableViewController.m:116:37：选择器“fetchRequest”没有已知的类方法

*2 RepeatersTableViewController.m:170:22: 选择器“objectsWithFetchRequest:”没有已知的类方法

就像没有将核心数据位添加到中继器类中一样。

是否有另一份 v0.10 到 v0.20 转换的文档可以帮助我查看更多更改？

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1 回答 1

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在没有详细查看您的问题的情况下，https://github.com/RestKit/RestKit/wiki/Object-mapping已经回答了我的许多 restkit .20 问题。

于 2013-02-06T01:51:16.710 回答