我需要通过parse.com（PFObject）在iOS上获得一些帮助

Question

I have two classes on Parse.com which are :

First User class: username,password,email,and userTitle.

Second Messages class: senderName, file, fileType, senderTitle, senderId, recipientIds.

My code :

        PFObject *message = [PFObject objectWithClassName:@"Messages"];
        [message setObject:file forKey:@"file"];
        [message setObject:fileType forKey:@"fileType"];
        [message setObject:self.recipients forKey:@"recipientIds"];
        [message setObject:[[PFUser currentUser] objectId] forKey:@"senderId"];
        [message setObject:[[PFUser currentUser] username] forKey:@"senderName"];
        [message saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {…..

I can't set "userTitle" from class User to "senderTitle" in class Messages by above method, is there anyone there have idea how to do so? thanks in advance.

Regards,

Answer 1

PFUser is just a subclass of PFObject , which is a implements a Dictionary interface, so you can use [PFUser currentUser][@"userTitle"] just as you could use message[@"file"] .

Also, if senderId is a reference type column you can just say message[@"senderId"]=[PFUser currentUser]; - The Parse framework will resolve the object Id for you.