Question

我在我的一个应用程序中从RestKit 0.10移动到0.20。我在https://github.com/RestKit/RestKit/wiki/Upgrading-from-v0.10.x-to-v0.20.0处查看了该页面，但没有看到此问题。

编辑2013-02-09添加了映射代码和loadObjectData方法*

RestKit是通过CocoaPods添加的。

这是在RK 0.10中工作，然后在RK 0.20中编译。这个片段确实：

创建fetchRequest
添加谓词
添加排序
获取转发器阵列

我按顺序进行了以下导入：

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

// Core Data
#import "Repeaters.h"

代码段：

    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"];

loadObjectData方法：

- (void)loadObjectData {

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

Xcode错误：

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

* 2 RepeatersTableViewController.m:170：22：选择器'objectsWithFetchRequest：'

就像核心数据位没有被添加到Repeater类中一样。

是否有另一个v0.10到v0.20转换的文档可以帮助我查看更多更改？

Answer 1

在没有详细审核您的问题的情况下，https://github.com/RestKit/RestKit/wiki/Object-mapping回答了我的许多问题.20。问题。

restkit版本0.20上的fetchRequest - 没有已知的类方法

1 个答案: