Question

我在Parse中保存PFRelation时遇到问题。我有一个消息PFObject，并希望将其添加到PFUser类中的PFRelation receivedMessages。代码如下。一切都在努力创造关系。我已将用户对象设置为正常，NSLog显示正确的用户但显示 [sendtoUser saveInBackgroundWithBlock：^（BOOL成功，NSError *错误）根本没有被调用为＆＃34;关系已保存＆＃ 34;未在控制台中显示。有人可以帮忙吗？感谢

PFObject *message = [PFObject objectWithClassName:@“message”];
message[@“fromUser"]=[PFUser currentUser].username;
message[@“message"]=@"喵!";
message[@“read"]=@NO;

[message saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {

    NSLog(@“message saved”);
    PFQuery *usernameQuery = [PFUser query];
    [usernameQuery whereKey:@"username" equalTo:[[self.friends objectAtIndex:index] username]];
    [usernameQuery findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        PFUser *sendtoUser = (PFUser *)objects[0];
        NSLog(@"send to user: %@", sendtoUser.username); //this works

        PFRelation *receivedMessages = [sendtoUser relationForKey:@"receivedMessages”];
        [receivedMessages addObject:message];

        [sendtoUser saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
            NSLog(@“relation saved”); //this doesn’t display at all                
        }];//end save user relation block

    }];//end username query block


}];//end save message block, this works

PFRelation不会保存，尝试将消息对象链接到PFUser对象

0 个答案: