Syncing with a filter

AppDelegate.m

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AppDelegate.m
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-(void) performRemoteSync
{
    NSURL *remoteURL = [NSURL URLWithString:kRemoteSyncURL];
    NSLog(@"Going to perform remote sync with: %@", remoteURL);
    self.pullRequest = [self.localCouch replicationFromDatabaseAtURL:remoteURL];
    [pullRequest setContinuous: YES];
    [pullRequest setFilter:@"todays_question/questions"];
    NSLog(@"pullRequest: %@", pullRequest);
    
    [pullRequest addObserver:self forKeyPath:@"completed" options:0 context:NULL];
    [self listQuestions];
    
}

-(void) observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
{
    if(object == pullRequest)
    {
        unsigned completed = pullRequest.completed;
        unsigned total = pullRequest.total;
        NSLog(@"completed: %u; total: %u", completed, total);
        NSLog(@"SYNC progress: %u / %u", completed, total);
        if(total > 0 && total == completed)
        {
            NSLog(@"Done syncing!");
            [pullRequest removeObserver:self forKeyPath:@"completed"];
        }
    }
}

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DESIGN DOC ON REMOTE COUCH
************

{
   "_id": "_design/todays_question",
   "_rev": "14-a20357760359cfd96ba5aa635693168a",
   "language": "javascript",
   "views": {
       "TodaysQuestion": {
           "map": "function(doc) {if(doc.type == \"Daily Poll\" && doc.release_date){emit(doc.release_date, doc);}}"
       }
   },
   "filters": {
       "questions": "function(doc) {if(doc.release_date){return true;}else{return false;}}"
   }
}