UISearchDisplayController in DetailView only displays results once

UISearchDisplayController in DetailView only displays results once

I implemented a UISearchDisplayController on both sides of a
MasterViewController. In the Detail view, it works fine with the first
item selected from the MasterView.
However, if I choose another Detail item, the search will not display any
object even though NSLog tells me it found all of the expected cells:
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *feedTableIdentifier = @"unread";
Post *thepost=nil;
if (tableView ==
self.searchDisplayController.searchResultsTableView) {
NSLog(@"in a search");
thepost = [self.filteredFeedArray objectAtIndex:indexPath.row];
} else {
NSLog(@"NOT in a search");
thepost = [self.fetchedResultsController
objectAtIndexPath:indexPath];
}
NSDate *tmpDate=[NSDate date];
if (thepost.read) {
tmpDate=thepost.read;
feedTableIdentifier = @"read";
} else if (thepost.date) {
tmpDate=thepost.date;
feedTableIdentifier = @"unread";
}
UITableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:feedTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc]
initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:feedTableIdentifier];
}
((UILabel *)[cell viewWithTag:1]).text = thepost.title;
NSDateFormatter *df=[[NSDateFormatter alloc] init];
df.dateFormat = @"EEEE, MMMM d, YYYY";
((UILabel *)[cell viewWithTag:2]).text = [df stringFromDate:tmpDate];
((UILabel *)[cell viewWithTag:3]).text = [self
flattenHTML:thepost.excerpt];
return cell;
}
- (NSInteger)tableView:(UITableView *)tableView
numberOfRowsInSection:(NSInteger)section
{
if (tableView ==
self.searchDisplayController.searchResultsTableView) {
NSLog(@"in a search: %d", [_filteredFeedArray count]);
return [_filteredFeedArray count];
} else {
NSLog(@"NOT in a search: %d", [[[_fetchedResultsController
sections] objectAtIndex:section] numberOfObjects]);
return [[[_fetchedResultsController sections]
objectAtIndex:section] numberOfObjects];
}
}
Both detail and searchresult Table view have samely named Prototype cells.
Can someone tell me what I am doing wrong here and how I could properly
reset my UISearchViewController whenever switching Detail items?