RestKit刪除孤立的對象規則

Question

是否可以設置像全局規則爲 RKbjectManager刪除成功映射上的孤立對象。

我目前使用RKPathMatcher刪除特定路徑模式的孤兒，但它看起來像我缺少的東西。

Answer 1

閱讀RKManagedObjectRequestOperation中的「獲取請求塊」，它們是預配置的NSFetchRequests，以便從本地存儲返回給定類型的所有對象，以便RestKit可以找到不再位於服務器響應中的孤立對象。

他們的榜樣塊只檢查機場候機樓：

RKObjectManager *manager = [RKObjectManager managerWithBaseURL:@"http://restkit.org"]; 
[manager addFetchRequestBlock:^NSFetchRequest *(NSURL *URL) { 
    RKPathMatcher *pathMatcher = [RKPathMatcher pathMatcherWithPattern:@"/airports/:airport_id/terminals.json"]; 

    NSDictionary *argsDict = nil; 
    BOOL match = [pathMatcher matchesPath:[URL relativePath] tokenizeQueryStrings:NO parsedArguments:&argsDict]; 
    NSString *airportID; 
    if (match) { 
     airportID = [argsDict objectForKey:@"airport_id"]; 
     NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"Terminal"]; 
     fetchRequest.predicate = [NSPredicate predicateWithFormat:@"airportID = %@", @([airportID integerValue])]; // NOTE: Coerced from string to number 
     fetchRequest.sortDescriptors = @[ [NSSortDescriptor sortDescriptorWithKey:@"name" ascending:YES] ]; 
     return fetchRequest; 
    } 

    return nil; 
}]; 

，但你可以設置一個PathMatcher匹配任何模式，如果你的網址都比較一般：

RKPathMatcher *entityMatcher = [RKPathMatcher pathMatcherWithPattern:@"/tables/:entityName"]; 

BOOL entityMatch = (pathAndQueryString != nil) && [entityMatcher matchesPath:pathAndQueryString tokenizeQueryStrings:YES parsedArguments:&argsDict]; 
if (entityMatch) { 
    NSString *entityName = argsDict[@"entityName"]; 

    NSFetchRequest *fetchRequest; 
    if (entityName) { 
    fetchRequest = [NSFetchRequest fetchRequestWithEntityName:entityName]; 
    fetchRequest.includesSubentities = NO; 
    } 

    return fetchRequest; 
} 

然後你只需要一個獲取請求塊以匹配您的任何實體。