Problems Implementing Search Bar with Parse Data - objective-c

Question

I have searched the land of Google far and wide and I have found tutorials on this, but they are before IOS8. I have tried to piece this together as best as I can, but yet when the app runs, and I type words into the search bar, nothing returns, or it crashes. So here's how the view looks, and what each object means:
Here is my JobListViewController.m File:
#import "JobDetailViewController.h"
#import "JobListViewController.h"
#import "Job.h"
#import "SearchedResultCell.h"
#interface JobListViewController () <UISearchDisplayDelegate, UISearchBarDelegate> {
}
#property (nonatomic, weak) IBOutlet UISearchBar *searchedBar;
#property (nonatomic, strong) NSString *mainTitle;
#property (nonatomic, strong) NSString *subTitle;
#property (nonatomic, assign) BOOL canSearch;
#end
#interface JobListViewController ()
#end
#implementation JobListViewController
{
NSArray *jobs;
NSArray *searchResults;
}
#synthesize searchedBar;
#synthesize mainTitle;
#synthesize subTitle;
#synthesize canSearch;
- (id)initWithCoder:(NSCoder *)aCoder
{
self = [super initWithCoder:aCoder];
if (self) {
// Custom the table
// The className to query on
self.parseClassName = #"Jobs";
// The key of the PFObject to display in the label of the default cell style
self.textKey = #"Position";
// Whether the built-in pull-to-refresh is enabled
self.pullToRefreshEnabled = YES;
// Whether the built-in pagination is enabled
self.paginationEnabled = YES;
// The number of objects to show per page
self.objectsPerPage = 10;
}
return self;
}
- (void)viewDidLoad
{
[super viewDidLoad];
[self.searchedBar becomeFirstResponder];
}
- (void)viewWillAppear:(BOOL)animated {
[super viewWillAppear:animated];
self.canSearch = 0;
}
- (void)viewDidAppear:(BOOL)animated {
[super viewDidAppear:animated];
}
- (void)viewWillDisappear:(BOOL)animated {
[super viewWillDisappear:animated];
}
- (void)viewDidDisappear:(BOOL)animated {
[super viewDidDisappear:animated];
}
- (void)viewDidUnload
{
[super viewDidUnload];
// Release any retained subviews of the main view.
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation
{
return (interfaceOrientation != UIInterfaceOrientationPortraitUpsideDown);
}
- (void)objectsWillLoad {
[super objectsWillLoad];
// This method is called before a PFQuery is fired to get more objects
}
- (PFQuery *)queryForTable
{
PFQuery *query;
if (self.canSearch == 0)
{
query = [PFQuery queryWithClassName:#"Jobs"];
}
else
{
query = [PFQuery queryWithClassName:#"Jobs"];
NSString *searchThis = [searchedBar.text uppercaseString];
[query whereKey:#"Position" containsString:searchThis];
}
[query orderByAscending:#"Position"];
query.cachePolicy = kPFCachePolicyCacheThenNetwork;
return query;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath object: (PFObject *)object
{
static NSString *simpleTableIdentifier = #"JobCell";
static NSString *pimpleTableIdentifier = #"JobCell";
UITableViewCell *cell = [self.tableView dequeueReusableCellWithIdentifier:simpleTableIdentifier];
if (cell == nil) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:simpleTableIdentifier];
SearchedResultCell *cell = [self.tableView dequeueReusableCellWithIdentifier:pimpleTableIdentifier];
if (cell == nil) {
cell = [[SearchedResultCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:pimpleTableIdentifier];
}
[self configureSearchResult:cell atIndexPath:indexPath object:object];
}
// 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 *positionLabel = (UILabel*) [cell viewWithTag:101];
positionLabel.text = [object objectForKey:#"Position"];
UILabel *rotationLabel = (UILabel*) [cell viewWithTag:102];
rotationLabel.text = [object objectForKey:#"Rotation"];
UILabel *locationLabel = (UILabel*) [cell viewWithTag:103];
locationLabel.text = [object objectForKey:#"Location"];
UILabel *typeLabel = (UILabel*) [cell viewWithTag:104];
typeLabel.text = [object objectForKey:#"Type"];
return cell;
}
- (void) objectsDidLoad:(NSError *)error
{
[super objectsDidLoad:error];
NSLog(#"error: %#", [error localizedDescription]);
}
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
if ([segue.identifier isEqualToString:#"showJobDetail"]) {
NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow];
Job *job = [[Job alloc] init];
JobDetailViewController *destViewController = segue.destinationViewController;
PFObject *object = [self.objects objectAtIndex:indexPath.row];
job.position = [object objectForKey:#"Position"];
job.name = [object objectForKey:#"Name"];
job.email = [object objectForKey:#"Email"];
job.phone = [object objectForKey:#"Phone"];
job.imageFile = [object objectForKey:#"imageFile"];
job.rotation = [object objectForKey:#"Rotation"];
job.location = [object objectForKey:#"Location"];
job.type = [object objectForKey:#"Type"];
job.clearance = [object objectForKey:#"Clearance"];
job.job_description = [object objectForKey:#"Job_Description"];
job.qualifications = [object objectForKey:#"Qualifications"];
destViewController.job = job;
}
}
- (void)searchBarSearchButtonClicked:(UISearchBar *)searchBar
{
[self clear];
self.canSearch = 1;
[self.searchedBar resignFirstResponder];
[self queryForTable];
[self loadObjects];
}
/*
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
if (searchResults == nil) {
return 0;
} else if ([searchResults count] == 0) {
return 1;
} else {
return [self.objects count];
}
}
*/
- (void)configureSearchResult:(SearchedResultCell *)cell atIndexPath:(NSIndexPath *)indexPath object:(PFObject *)object
{
mainTitle = [object objectForKey:#"Position"];
cell.mainTitle.text = mainTitle;
subTitle = [object objectForKey:#"Type"];
cell.detail.text = subTitle;
// Implement this if you want to Show image
cell.showImage.image = [UIImage imageNamed:#"placeholder.jpg"];
PFFile *imageFile = [object objectForKey:#"imageFile"];
if (imageFile) {
cell.showImage.file = imageFile;
[cell.showImage loadInBackground];
}
}
#pragma mark - UITableViewDelegate
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
[searchedBar resignFirstResponder];
if ([self.objects count] == indexPath.row) {
[self loadNextPage];
} else {
PFObject *photo = [self.objects objectAtIndex:indexPath.row];
NSLog(#"%#", photo);
// Do something you want after selected the cell
}
}
#pragma mark - UIScrollViewDelegate
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView {
[self.searchedBar resignFirstResponder];
}
- (void)searchBarCancelButtonClicked:(UISearchBar *) searchBar {
[self.searchedBar resignFirstResponder];
[self queryForTable];
[self loadObjects];
}
#end
I cannot find where I am going wrong. Any help whatsoever would be much appreciated. Or if anything if you can point me in the right direction.

Answer 1

I had problems with that I few months ago, so below is a project that reeeally helped me. Hope for you too.
https://github.com/mwazir2/ParseSearchNoPagination
cheers!
Update
In my adaptation of this example above I followed everything from the project. The project uses PFQueryTableViewController from Parse SDK and not the default iOS TableViewController.
In the first part -(id)initWithCoder I have commented the
//self.textKey = #"username";
Then I altered the - (PFQuery *)queryForTable method in some ways. One just changed the whereKey to adequate my project and the second changed the query a little bit more because it should only show in the table objects related to specific users. Below follows respective queries.
The first more general query
- (PFQuery *)queryForTable
{
PFQuery *query = [PFUser query];
if (self.canSearch == 0) {
query = [PFQuery queryWithClassName:#"_User"];
} else {
query = [PFQuery queryWithClassName:#"_User"];
NSString *searchThis = [searchedBar.text capitalizedString];
//PFQuery *query = [PFQuery queryWithClassName:#"Channel"];
//[query whereKey:#"channelName" equalTo:searchThis];
[query whereKey:#"username" containsString:searchThis];
}
The second, specific to current user:
- (PFQuery *)queryForTable
{
PFQuery *query = [PFQuery queryWithClassName:self.parseClassName];
[query whereKey:#"owner" equalTo:[PFUser currentUser]];
[query orderByDescending:#"createdAt"];
if (self.pullToRefreshEnabled) {
query.cachePolicy = kPFCachePolicyNetworkOnly;
}
// 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;
}
return query;
}
For the tableView methods I only used: tableView cellForRowAtIndexPath(pretty much like yours). And also the cellForRowAtIndexPath for the LoadMoreCell, like in the example.
Also the tableView heightForRowAtIndexPath: for the LoadMoreCell and tableView didSelectRowAtIndexPath, like below:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath: (NSIndexPath *)indexPath
{
[tableView deselectRowAtIndexPath:indexPath animated:YES];
//[searchedBar resignFirstResponder];
if ([self.objects count] == indexPath.row) {
[self loadNextPage];
} else {
PFObject *photo = [self.objects objectAtIndex:indexPath.row];
NSLog(#"%#", photo);
// Do something you want after selected the cell
}
}
Of course below the } else { statement you can change it or delete the NSLog line.
I suggest you try to alter the example itself with your object and keys, until it works an then alter yours, exactly like the example... :)
Compound Query
PFQuery *query1 = [PFQuery queryWithClassName:#"Class1"];
[name whereKey:#"column1" equalTo:[fieldInCode text]];
PFQuery *query2 = [PFQuery queryWithClassName:#"Class1"];
[enterKey whereKey:#"column2" equalTo:[anotherField text]];
PFQuery *query = [PFQuery orQueryWithSubqueries:#[query1,query2]];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
Cheers!