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iOS

Posted by patrick tagliaferro
patrick tagliaferro
5,399 Points

Getting Relational Data from Parse different class

I have got parse backend set up and recording relational data between two classes. So lets say "Current User" is associated with "John" in the agent class through the agentRelation. All I am trying to do is display some for the strings (name and email) from "john" into a label outlet. The querying the relation I can do but not sure how to output the "name" string. Any help??

.m file

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.

    self.agentRelation = [[PFUser currentUser] objectForKey:@"agentRelation"];
    PFQuery *query = [self.agentRelation query];
    NSString *name = [query @"name"];
    self.agentName.text = name;

}

.h

#import <UIKit/UIKit.h>
#import <Parse/Parse.h>

@interface IBThirdViewController : UIViewController

@property (nonatomic, strong) PFRelation *agentRelation;
@property (nonatomic, strong) NSArray *agent;
@property (weak, nonatomic) IBOutlet UILabel *agentName;

@end

2 Answers

Stone Preston
Stone Preston
42,016 Points

your query logic is incorrect. you need to call findObjectsInBackground with block to actually perform the query and get data

self.agentRelation = [[PFUser currentUser] objectForKey:@"agentRelation"];
PFQuery *query = [self.agentRelation query];

[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
  if (!error) {
    // success

    // Do something with the found objects
    for (PFObject *object in objects) {
        NSLog(@"name: %@", [object objectForKey:@"name"]);
        NSLog(@"email: %@", [object objectForKey:@"email"]);
    }

  } else {
    // Log details of the failure
    NSLog(@"Error: %@ %@", error, [error userInfo]);
  }
}];
patrick tagliaferro
patrick tagliaferro
5,399 Points

Thank you!!! This makes so much more sense after seeing it. I was tried PFObject as well but know see I first have to query a block of the relational info then do the PFObjects from that. Worked great.

patrick tagliaferro
patrick tagliaferro
5,399 Points
patrick tagliaferro
patrick tagliaferro
5,399 Points

Thank you!!! This makes so much more sense after seeing it. I was tried PFObject as well but know see I first have to query a block of the relational info then do the PFObjects from that. Worked great.

Stone Preston
Stone Preston
42,016 Points

glad I could help : )