Parse.com - PFFile为空

时间:2013-12-03 20:16:43

标签: objective-c parse-platform

所以我正在检索一个文件作为其中一个字段的对象。在Parse.com数据浏览器中,文件存在并下载。但是,当我检索对象时,PFFile *wordlistFile = [object objectForKey:kWSWordlistFilesFileKey];返回null,因此getDataInBackgroundWithBlock什么都不做。

这是我正在检索的对象的日志。没有对文件的引用:

2013-12-03 12:07:10.635 WSPhoto[24958:a0b] object = <WordlistFiles:lRHFmHaPRg:(null)> {
    ACL = "<PFACL: 0xd445670>";
    language = Spanish;
}

这是完整的代码。根据我见过的一些例子,我似乎正在做的一切:

PFQuery* wordlistFilesQuery = [PFQuery queryWithClassName:kWSWordlistFilesClassKey];
[wordlistFilesQuery whereKey:kWSWordlistFilesLanguageKey equalTo:language];
[wordlistFilesQuery includeKey:kWSWordlistFilesFileKey];
[wordlistFilesQuery setCachePolicy:kPFCachePolicyNetworkOnly];

[wordlistFilesQuery getFirstObjectInBackgroundWithBlock:^(PFObject *object, NSError *error) {

    if (!error) {

        PFFile *wordlistFile = [object objectForKey:kWSWordlistFilesFileKey];

        NSLog(@"******* wordlistFile = %@",wordlistFile);

        // Show HUD view
        AppDelegate *appDel = (AppDelegate *)[[UIApplication sharedApplication]delegate];
        [appDel showGlobalProgressHUDWithTitle:@"Loading wordlist. This may take a while."];

        [wordlistFile getDataInBackgroundWithBlock:^(NSData *data, NSError *error) {   

            if (!error) {

               // Super private stuff here
            }

            // The data didn't load
            else {
                NSLog(@"loadWordlistFromDBByFile -- wordlist does not exist, loading by querying");

                [self loadWordlistFromDBByQuery:language];      

            }

        } progressBlock:^(int percentDone) {

        }];
    }

    // The object didn't load
    else {
        NSLog(@"loadWordlistFromDBByFile -- wordlist does not exist, loading by querying");

        [self loadWordlistFromDBByQuery:language];

    }
}];

2 个答案:

答案 0 :(得分:0)

确保您的kWSWordlistFilesFileKey与Parse.com上数据浏览器上显示的列名完全相同。

因此,如果该列被称为“wordlistfile”,请确保:

kWSWordlistFilesFileKey = @"wordlistfile";

答案 1 :(得分:0)

好的,这是一个愚蠢的错误。我在Parse.com数据浏览器中重新加载了WordlistFiles类,文件消失了。不知道是怎么回事。我向你们发誓,我正盯着它。我重新上传,现在它正在检索,并且似乎没有任何奇怪的行为,它正在删除它。

操作员错误。