Search bar in tableview using objective c with parse database - objective-c

Question

I've been following a tutorial teaching how to make a tableview with a search bar. I got this to work without problems, but now I learned to make the same tableview but instead of local arrays, I've been getting my data from parse as PFObjects.
I then tried to take the search bar and implant it in my new tableview which uses parse. I can't get this to work. Following the tutorial with the search bar they are using simple arrays stored locally..
Can anyone point me in the right direction of how to use a search bar in a tableview that gets its data from a parse database?
This is my code that works with my tableview that does NOT use parse.
#implementation RecipeBookViewController {
NSArray *recipes;
NSArray *searchResults;
}
#synthesize tableView = _tableView;
- (void)viewDidLoad
{
[super viewDidLoad];
// Initialize table data
recipes = [NSArray arrayWithObjects:#"Egg Benedict", #"Mushroom Risotto",
#"Full Breakfast", #"Hamburger", #"Ham and Egg Sandwich", #"Creme Brelee",
nil];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:
(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:
(NSInteger)section
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
return [searchResults count];
} else {
return [recipes count];
}
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:
(NSIndexPath *)indexPath
{
static NSString *simpleTableIdentifier = #"RecipeCell";
UITableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:simpleTableIdentifier];
}
if (tableView == self.searchDisplayController.searchResultsTableView) {
cell.textLabel.text = [searchResults objectAtIndex:indexPath.row];
} else {
cell.textLabel.text = [recipes objectAtIndex:indexPath.row];
}
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:
(NSIndexPath
- *)indexPath
{
if (tableView == self.searchDisplayController.searchResultsTableView) {
[self performSegueWithIdentifier: #"showRecipeDetail" sender: self];
}
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showRecipeDetail"]) {
RecipeDetailViewController *destViewController =
segue.destinationViewController;
NSIndexPath *indexPath = nil;
if ([self.searchDisplayController isActive]) {
indexPath = [self.searchDisplayController.searchResultsTableView
indexPathForSelectedRow];
destViewController.recipeName = [searchResults
objectAtIndex:indexPath.row];
} else {
indexPath = [self.tableView indexPathForSelectedRow];
destViewController.recipeName = [recipes objectAtIndex:indexPath.row];
}
}
}
- (void)filterContentForSearchText:(NSString*)searchText scope:
(NSString*)scope
{
NSPredicate *resultPredicate = [NSPredicate
predicateWithFormat:#"SELF contains[cd] %#",
searchText];
searchResults = [recipes filteredArrayUsingPredicate:resultPredicate];
}
#pragma mark - UISearchDisplayController delegate methods
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller
shouldReloadTableForSearchString:(NSString *)searchString
{
[self filterContentForSearchText:searchString
scope:[[self.searchDisplayController.searchBar
scopeButtonTitles]
objectAtIndex:
[self.searchDisplayController.searchBar
selectedScopeButtonIndex]]];
return YES;
}
And this is my tableview which get its data from my parse database:
#implementation RecipeBookViewController {
}
- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
// Custom the table
// The className to query on
self.parseClassName = #"Recipe";
// The key of the PFObject to display in the label of the default cell
style
self.textKey = #"name";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = NO;
// The number of objects to show per page
//self.objectsPerPage = 10;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[[NSNotificationCenter defaultCenter] addObserver:self
selector:#selector(refreshTable:)
name:#"refreshTable"
object:nil];
}
- (void)refreshTable:(NSNotification *) notification
{
// Reload the recipes
[self loadObjects];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
[[NSNotificationCenter defaultCenter] removeObserver:self name:#"refreshTable"
object:nil];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:
(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (PFQuery *)queryForTable
{
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
// If no objects are loaded in memory, we look to the cache first
to fill the table
// and then subsequently do a query against the network.
/* if ([self.objects count] == 0) {
query.cachePolicy = kPFCachePolicyCacheThenNetwork;
}*/
// [query orderByAscending:#"name"];
return query;
}
- (UITableViewCell *)tableView:(UITableView *)tableView
cellForRowAtIndexPath:
(NSIndexPath *)indexPath object:(PFObject *)object
{
static NSString *simpleTableIdentifier = #"RecipeCell";
UITableViewCell *cell = [tableView
dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:simpleTableIdentifier];
}
// Configure the cell
PFFile *thumbnail = [object objectForKey:#"imageFile"];
PFImageView *thumbnailImageView = (PFImageView*)[cell viewWithTag:100];
thumbnailImageView.image = [UIImage imageNamed:#"placeholder.jpg"];
thumbnailImageView.file = thumbnail;
[thumbnailImageView loadInBackground];
UILabel *nameLabel = (UILabel*) [cell viewWithTag:101];
nameLabel.text = [object objectForKey:#"name"];
UILabel *prepTimeLabel = (UILabel*) [cell viewWithTag:102];
prepTimeLabel.text = [object objectForKey:#"prepTime"];
return cell;
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:
(UITableViewCellEditingStyle)editingStyle
forRowAtIndexPath:(NSIndexPath*) indexPath
{
// Remove the row from data model
PFObject *object = [self.objects objectAtIndex:indexPath.row];
[object deleteInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
[self refreshTable:nil];
}];
}
- (void) objectsDidLoad:(NSError *)error
{
[super objectsDidLoad:error];
NSLog(#"error: %#", [error localizedDescription]);
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showRecipeDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
RecipeDetailViewController *destViewController =
segue.destinationViewController;
PFObject *object = [self.objects objectAtIndex:indexPath.row];
Recipe *recipe = [[Recipe alloc] init];
recipe.name = [object objectForKey:#"name"];
recipe.imageFile = [object objectForKey:#"imageFile"];
recipe.prepTime = [object objectForKey:#"prepTime"];
recipe.ingredients = [object objectForKey:#"ingredients"];
destViewController.recipe = recipe;
}
}