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iOS

Posted by maytelabargamalaga
maytelabargamalaga
Courses Plus Student 6,465 Points

Parse: Delete PFRelation data

Hello guys. Thanks in advance for all advice that you can give me. I am really stack in follow point:

1.- I create a PFRelation between my user and products. 2.- The user can add some products to his/her list but can not delete.

Two taskes that I can not reach at this moment:

1.- I want to delete the item that user does not want. With the code that I wrote. I get this goal but my huge problem is that I delete also my products class where I have all my products. I want just delete the product that the user does not want and hold exactly the list of my products.

2.- I can not delete the row where the item is.

Here is my code

#import "listadoSnacks.h"
#import "editSnacks.h"
#import "editSnacksTableViewCell.h"

@interface listadoSnacks ()

@end

@implementation listadoSnacks



- (void)viewDidLoad {
    [super viewDidLoad];

}
    `````
-(void)viewWillAppear:(BOOL)animated {

    [super viewWillAppear:animated];


//    self.currentUser =[PFUser currentUser];

    self.mipedido = [[PFUser currentUser] objectForKey:@"mipedido"];

    PFQuery *query = [self.mipedido query];
//    [query whereKey:@"nombreProducto" notEqualTo:self.currentUser.username];
    [query orderByAscending:@"nombreProducto"];
    [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
        if (error) {
            NSLog(@"Error %@ %@", error, [error userInfo]);
        }
        else {
            self.allProducts =objects;
            [self.tableView reloadData];
        }
    }];

}
  • (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { // Return the number of sections. return 1; }
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    // Return the number of rows in the section.

    return  [self.allProducts count];

}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *Identificacion =@"editSnacksTableViewCell";

editSnacksTableViewCell*cell = (editSnacksTableViewCell *)[tableView dequeueReusableCellWithIdentifier:Identificacion];

if (cell == nil) {
    NSArray *nib =[[NSBundle mainBundle] loadNibNamed:@"editSnacksTableViewCell" owner:self options:nil];
    cell = [nib objectAtIndex:0];      
}

PFUser *user = [self.allProducts objectAtIndex:indexPath.row];
cell.textLabel.text =user[@"nombreProducto"];

return cell;

}

-(void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath {

    if (editingStyle == UITableViewCellEditingStyleDelete) {

        PFUser *user = [self.allProducts objectAtIndex:indexPath.row];


        [user deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {


        }];

    }
}
@end