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Luke Terzich
5,193 PointsTrouble running a query in xCode with Parse.com
hello, i am trying to allow users to search for another user in a RIBBIT type app..
I am sending a user typed variable to another view controller where the query is being run.
This is my code:
-(void)viewWillAppear:(BOOL)animated
{
[super viewWillAppear:animated];
[labeltest setText:userEmail];
PFQuery *query = [PFQuery queryWithClassName:@"User"];
[query whereKey:@"email" equalTo:userEmail];
[query findObjectsInBackgroundWithBlock:^(NSArray *comments, NSError *error) {
if(error)
{
//The Query Failed!
NSLog(@"Query Failed");
}
else
{
//The Query Succeeded!
NSLog(@"Successfully retrieved %d users.", comments.count);
}
}];
}
If anybody can shed any light as to where i am going wrong, I have a label on the view so i can see that it is getting the correct email address (that the user typed in) Also in my Xcode Log i am getting Successfully retrieved 0 users. My class in Parse.com is called "User"
Thank you to anybody that can help
UPDATE: I have just added an NSLOG to the actually query just before the IF statement is called. if i try to print the variable "userEmail" it is (null) in the Xcode Log viewer
Cannot understand why when just above it (outside the query) i am calling the variable and it is printed on the screen?
4 Answers
Soojin Ro
13,331 PointsIf you wish to get a PFUser as a result of your query, you should initialize query like this,
PFQuery *query = [PFUser query];
Moreover, you can do what you want with just three lines(given that email is unique value among users)
PFQuery *query = [PFUser query];
[query whereKey:@"email" equalTo:@"email string"];
PFUser *user = (PFUser *)[query getFirstObject];
Luke Terzich
5,193 PointsThank you so much! been looking for this for ages and it was as easy as that! Thank you pal!!!!!!
Luke Terzich
5,193 PointsSorry I'm a little new to this, how would i save a specific field as a variable? Thank you in advanced pal
Soojin Ro
13,331 Pointswhat do you mean a specific field? like a textfield?
Luke Terzich
5,193 Pointslike a column in the class,i want to get the users email address in the address field in the class so i can show it on the screen :)
If that makes sense?