How do I delete a row from a Parse object? - ios

Question

I have a class on Parse.com called "Hospital", which has a few rows on it. I want to query all the rows in this object, and then selectively delete some of them.
I figure I need to cycle through the object, gathering the objectIDs, and then look at the row associated with each ID to figure out which ones should be deleted. I can't find how to do this anywhere. I've tried this:
PFQuery *query = [PFQuery queryWithClassName:#"Hospital"];
But this returns an object with 0 objects inside it, when there is definitely a row in the Parse.com database.
Once I get this part working, and get objectIDs, it seems I can delete a row with the following:
PFObject *testObject = [PFObject objectWithoutDataWithClassName:#"Hospital" objectId:#"NMZ8gLj3RE"];
[testObject deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (succeeded){
NSLog(#"BOOOOOM"); // this is my function to refresh the data
} else {
NSLog(#"DELETE ERRIR");
}
}];

Answer 1

PFQuery *query = [PFQuery queryWithClassName:#"Hospital"];
[query findObjectsInBackgroundWithBlock:^(NSArray *hospitals, NSError *error) {
if (!error)
{
for (PFObject *hospital in hospitals)
{
if ([hospital.objectId isEqualToString:#"NMZ8gLj3RE"])
{
[hospital deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (succeeded){
NSLog(#"BOOOOOM"); // this is my function to refresh the data
} else {
NSLog(#"DELETE ERRIR");
}
}];
}
}
}
else
{
NSLog(#"%#",error);
}
}];