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iOS

Posted by Joshua Silva
Joshua Silva
6,525 Points

How can add a PFUser to a "friends relation" without a table view?

Am messing around the ribbit app and made a another tab to add friends other than using the editTableView to add friends.

Am trying to make it where the currentUser types in a user name and if the user name exist in the parse database it adds that to the existing relation, "friendRelation".

So this is where am stuck, how do i make that relation once I know the username exist in the database? Do i need to make find the object's Id once I query the username? I am unsure of what exactly the database needs to make that relation

2 Answers

Sai Kiran Dasika
Sai Kiran Dasika
Courses Plus Student 7,278 Points

Okay I think I get your question, When you query data from the parse using the PFQuery then the parse sends the data in the form of an NSArray *objects. What you can do is use a for loop where you can set an a PFObject. Ex:-

for(PFUser *user in objects){

} Then for each user you can add them into the friendsRelation. I think you are asking this question is because we cannot get the index path of the Object.

Joshua Silva
Joshua Silva
6,525 Points

Awesome thanks a lot for your time! you were pretty much on point on what I was asking :) and am sure I understand what parse is asking for however, my code does not seem to work. Am I doing it right? Do I have to use the saveInBackground method?

- (IBAction)addFriend:(id)sender {

  PFRelation *friendsRelations = [self.currentUser relationForKey:@"friendsRolation"];

    NSString * theFriend = self.userFriend.text;


    PFQuery *query = [PFUser query];
    [query whereKey:@"username" equalTo:theFriend];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        for (PFUser *user in objects) {
              //  PFObject *USER = [PFObject objectWithoutDataWithObjectId:[user objectId]];
            [friendsRelations addObject:user];
            NSLog(@"userId: %@ /n %@", [user objectId], user);
        }
    }];
Sai Kiran Dasika
PLUS
Sai Kiran Dasika
Courses Plus Student 7,278 Points
Sai Kiran Dasika
Sai Kiran Dasika
Courses Plus Student 7,278 Points

okay. the NSString that you created has a problem mostly you should be doing self.userFriend.username because Parse gives you a built in capability get the username instantly and you can use the save Eventually function on the friendsRelation in parse where the data will sync with the parse cloud when ever there is data connection.