Make randomizing actually choose a random story! It was previously ju…

…st selecting a story from the last subreddit.

Classes/Data/SubredditDataModel.m

@@ -83,7 +83,7 @@ - (void)requestDidFinishLoad:(TTURLRequest*)request
     // parse the JSON data that we retrieved from the server
     NSDictionary *json = [NSDictionary dictionaryWithJSONString:responseBody error:nil];
     [responseBody release];
-
+        
     // drill down into the JSON object to get the part 
     // that we're actually interested in.
 

Classes/Data/SubredditDataSource.m

@@ -64,11 +64,16 @@ - (void)tableViewDidLoadModel:(UITableView*)tableView
     lastLoadedSubreddit = [self retain];
 }
 
+- (NSArray *)items
+{
+    return _subredditModel.stories;
+}
+
 - (Story *)storyWithIndex:(int)anIndex
 {	
-	if (anIndex < 0 || anIndex > [self.items count])
+	if (anIndex < 0 || anIndex > [((SubredditDataModel *)self.model) totalStories])
 		return nil;
-    return [self.items objectAtIndex:anIndex];
+    return [((SubredditDataModel *)self.model).stories objectAtIndex:anIndex];
 }
 
 #pragma mark TTDataSource

Classes/iRedditAppDelegate.m

@@ -199,16 +199,15 @@ - (void)showRandomStory
 		//[[Beacon shared] startSubBeaconWithName:@"serendipityTime" timeSession:YES];
 	}
 
-	SubredditDataSource *activeDataSource = [SubredditDataSource lastLoadedSubreddit];
-    NSInteger count = [((SubredditDataModel *)activeDataSource.model) totalStories];
+    NSInteger count = [(SubredditDataModel *)randomDataSource.model totalStories];
 	NSInteger randomIndex = count > 0 ? arc4random() % count : 0;
 
 	Story *story = nil;
 
 	int i=0;
 	while (!story && i++ < count)
 	{
-		story = [activeDataSource storyWithIndex:(randomIndex++)%count];
+		story = [randomDataSource storyWithIndex:(randomIndex++)%count];
 
 		if ([story visited] && i < count - 1)
 			story = nil;