MagicalRecord import only saving last item - ios

Question

I have an AFNetworking call that is calling my API and storing the results. I have a similar call that is working just fine this way. However for this one it seems to only be storing the last item.
[client getPath:#"GetItemsByFilter/" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject) {
NSLog(#"Operation: %#", operation);
NSLog(#"Response: %#", responseObject);
NSArray *customerFieldResults = [responseObject valueForKeyPath:#"details.items"];
NSLog(#"Results: %#", customerFieldResults);
__block NSArray *array;
#try {
[CustomerFields MR_truncateAll];
array = [CustomerFields MR_importFromArray:customerFieldResults];
NSLog(#"done setting array: %#", array);
} #catch (NSException *e) {
NSLog(#"Exception: %#", e);
} #finally {
NSLog(#"tc done");
}
NSLog(#"Array 1: %#", array);
[[NSNotificationCenter defaultCenter] postNotificationName:kCustomerFieldSetComplete object:nil];
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
NSLog(#"Operation: %#", operation);
NSError *jsonError;
NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:[[error localizedRecoverySuggestion] dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&jsonError];
NSLog(#"Error: %#", [error localizedRecoverySuggestion]);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:[NSString stringWithFormat:#"Api Error: %#", [dict valueForKey:#"status"]] message:[dict valueForKey:#"statusMessage"] delegate:nil cancelButtonTitle:NSLocalizedString(#"Ok", #"Okay button") otherButtonTitles:nil];
[alert show];
}];
When I do it with a context, it doesn't even save the items. I am sending a notification when the receiving of this information is complete and in that notification I am displaying the results from a [CustomerFields findAll]. Only one item is found with a [CustomerFields findAll].
Array1 shows the complete list of items, but once I get back to the other controller it only returns the very last item that was in the array. Also if I wrap this in a saveWithBlock it will not see any items in the other controller.
Why is it only showing the last record from the import when I do a findAll?

Answer 1

I'm not too familiar with Magical Record, but perhaps you're not saving your core data context?
I assume that the method MR_importFromArray: inserts the records into CoreData?
If that's not the case, you perhaps want to loop through your results and create them one by one?
[client getPath:#"GetItemsByFilter/" parameters:params success:^(AFHTTPRequestOperation *operation, id responseObject)
{
NSArray *customerFieldResults = [responseObject valueForKeyPath:#"details.items"];
customerFieldResults = [CustomerFields MR_importFromArray:customerFieldResults];
//loop through array and create records
//save your core data context here
[[NSNotificationCenter defaultCenter] postNotificationName:kCustomerFieldSetComplete object:nil];
}
failure:^(AFHTTPRequestOperation *operation, NSError *error){}];

Answer 2

I figured it out. It turns out the API I was using changed and the field I was using as the relatedByAttribute was coming back blank (a bug) so it was thinking all my records were duplicates and overwriting them.