How to reload data into NSTableView? - objective-c

Question

I am fairly new to Objective-C and I find there are a lot of tutorials for iOS and UITableView but almost none for OS X Apps via NSTableView. I have built a method to retrieve my data but I get an error on the last line:
"Property tableView not found on object type ProductsViewController".
I do not know the correct way to reload my data into my table or if I even need to use an NSTableView for this specific instance? Is there a better way to display my data than using NSTableView?
#import "ProductsViewController.h"
#import "Product.h"
#define getDataURL #"http://myurl"
#interface ProductsViewController ()
#end
#implementation ProductsViewController
#synthesize jsonArray, productsArray;
- (void)viewDidLoad {
[super viewDidLoad];
[self retrieveData];
}
-(NSInteger)numberOfRowsInTable:(NSTableView *)tableView{
return productsArray.count;
}
- (void) retrieveData{
NSURL * url = [NSURL URLWithString:getDataURL];
NSData * data = [NSData dataWithContentsOfURL:url];
jsonArray = [NSJSONSerialization JSONObjectWithData:data options:kNilOptions error:nil];
productsArray = [[NSMutableArray alloc] init];
for(int i = 0; i < jsonArray.count; i++){
NSString * pID = [[jsonArray objectAtIndex:i] objectForKey:#"id"];
NSString * pName = [[jsonArray objectAtIndex:i] objectForKey:#"product_name"];
NSString * pPrice = [[jsonArray objectAtIndex:i] objectForKey:#"product_price"];
NSString * pDescription = [[jsonArray objectAtIndex:i] objectForKey:#"product_description"];
NSString * pImage = [[jsonArray objectAtIndex:i] objectForKey:#"product_image"];
NSString * pDownload = [[jsonArray objectAtIndex:i] objectForKey:#"product_download"];
NSString * pVideo = [[jsonArray objectAtIndex:i] objectForKey:#"product_video"];
NSString * pFeatured = [[jsonArray objectAtIndex:i] objectForKey:#"featured"];
[productsArray addObject:[[Product alloc] initWithProduct_Name: pName andProduct_Price:pPrice andProduct_Description:pDescription andProduct_Image:pImage andProduct_Download:pDownload andProduct_Video:pVideo andProduct_Featured:pFeatured andProduct_ID:pID]];
}
[self.tableView reloadData];
}

Answer 1

You need to implement the required delegate methods for the NSTableViewDataSource protocol. Specifically, you need these two:
numberOfRowsInTableView:
tableView:objectValueForTableColumn:row:
The table view will then call these methods for the data it wants.
In addition, there's a great tutorial over at raywenderlich.com about using NSTableViews.