Parse 122 error upload - ios

Question

If I save text without having any text in the field I get this error message in Parse.com: Update Failure - The operation couldn't be completed(Parse error 122.) If I press OK and then try to dismiss the view with Cancel(a button item) the app crashes. I think a valid file name at Parse.com has to contain at least 1 character. Maybe I can do do something to stop the user from saving when not enter text? Any ideas?
This my code:
- (IBAction)save:(id)sender {
// Create PFObject with profile information
PFUser *profile = [PFUser currentUser];
[profile setObject:nameTextField.text forKey:#"name"];
[profile setObject:titleTextField.text forKey:#"title"];
[profile setObject:locationTextField.text forKey:#"location"];
// Profile image
NSData *imageData = UIImageJPEGRepresentation(profileImageView.image, 0.8);
NSString *filename = [NSString stringWithFormat:#"%#", nameTextField.text];
PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
[profile setObject:imageFile forKey:#"profileimageFile"];
// Show progress
MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
hud.mode = MBProgressHUDModeIndeterminate;
hud.labelText = #"Updating";
[hud show:YES];
// Upload profile to Parse
if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0)
[hud hide:YES];
[profile saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (error) {
[[[UIAlertView alloc] initWithTitle:#"Profile Information" message:#"Fill in atleast one field" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil]show];
[hud hide:YES];
}
else {
// Show success message
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"" message:#"Successfully updated profile" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
[hud hide:YES];
[self dismissViewControllerAnimated:YES completion:nil];
[self performSegueWithIdentifier:#"profile" sender:self];
}
}];
}
- (IBAction)Cancel:(id)sender {
[self dismissViewControllerAnimated:YES completion:nil];
[self performSegueWithIdentifier:#"profile" sender:self];
}

Answer 1

1
Test if your one letter theory is true. Change:
NSString *filename = [NSString stringWithFormat:#"%#", nameTextField.text];
To:
NSString *filename = [NSString stringWithFormat:#"file%#", nameTextField.text];
2
Or just avoid it if it's blank. So this:
NSString *filename = [NSString stringWithFormat:#"%#", nameTextField.text];
PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
[profile setObject:imageFile forKey:#"profileimageFile"];
Becomes:
if (nameTextField.text) {
NSString *filename = [NSString stringWithFormat:#"%#", nameTextField.text];
PFFile *imageFile = [PFFile fileWithName:filename data:imageData];
[profile setObject:imageFile forKey:#"profileimageFile"];
}
3
Also, what is this:
if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0)
It's doesn't appear to be connected to anything?
4
You call this twice in quick succession, and then again right after the file saves. Is there something in the method that makes the repetitive calls necessary?
[hud hide:YES];
5
Your if statement doesn't appear to be connected to anything:
if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0)
I'm assuming you want:
if(nameTextField.text.length==0 && titleTextField.text.length==0 && locationTextField.text.length==0) {
[hud hide:YES];
[profile saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (error) {
[[[UIAlertView alloc] initWithTitle:#"Profile Information" message:#"Fill in atleast one field" delegate:nil cancelButtonTitle:#"OK" otherButtonTitles:nil]show];
[hud hide:YES];
}
else {
// Show success message
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"" message:#"Successfully updated profile" delegate:self cancelButtonTitle:#"OK" otherButtonTitles:nil, nil];
[alert show];
[hud hide:YES];
[self dismissViewControllerAnimated:YES completion:nil];
[self performSegueWithIdentifier:#"profile" sender:self];
}
}];
}