I have UITableView with data taken from Parse.com. When I tried to filter them according to the NSArray, it does not show any results. Without the whereKey:containedIn, everything works fine. NSArray *array returns array of strings well. So the problem must be in the method containedIn, any ideas?
PFUser *user = [PFUser currentUser];
NSArray *array = [[PFUser currentUser] objectForKey:#"favorites"];
NSLog(#"ARR:%#", array);
if (user) {
quer = [PFQuery queryWithClassName:#"bs"];
[quer whereKey:#"objectId" containedIn:array];
[quer findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
self.itemss = [objects mutableCopy];
NSLog(#"KOL::%lu", (unsigned long)[objects count]);
[self.MainTable reloadData];
if (objects.count ==0) {
} else {
}
} else {
[quer cancel];
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
} else {
NSLog(#"no");
}
}
The array of "favorites" is an array of favorite objects when I'm sure it should be an array of objectIds. If you create an array that contains the objectIds of the favorite objects then it should work.
Related
How can I combine multiple Parse Queries?
I want to query the column sclink and songTitle from parse.com then add each to its own array.
Also how to save query locally and call it? IF else statment or something:
NSMutableArray *trackList = [[NSMutableArray alloc] init];
PFQuery *queryTracks = [PFQuery queryWithClassName:#"liveRadioPL"];
NSArray *objects = [queryTracks findObjects]; // Online PFQuery results
[PFObject pinAllInBackground:objects];
[queryTracks selectKeys:#[#"scLink"]];
[queryTracks findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
// The find succeeded.
totalTracks = (int)objects.count;
NSLog(#"Successfully retrieved %lu Tracks.", (unsigned long)objects.count);
// Do something with the found objects
for (PFObject *object in objects) {
[trackList addObject:[NSString stringWithFormat:#"%#", [object objectForKey:#"scLink"]]];
}
} else {
// Log details of the failure
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
trackListArray = trackList;
NSMutableArray *trackTitles = [[NSMutableArray alloc] init];
PFQuery *queryTitles = [PFQuery queryWithClassName:#"liveRadioPL"];
NSArray *objectsTitle = [queryTitles findObjects]; // Online PFQuery results
[PFObject pinAllInBackground:objects];
[queryTracks selectKeys:#[#"songTitle"]];
[queryTracks findObjectsInBackgroundWithBlock:^(NSArray *objectsTitle, NSError *error) {
if (!error) {
// The find succeeded.
totalTitles = (int)objectsTitle.count;
NSLog(#"Successfully retrieved %lu Titles.", (unsigned long)objectsTitle.count);
// Do something with the found objects
for (PFObject *object in objects) {
[trackTitles addObject:[NSString stringWithFormat:#"%#", [object objectForKey:#"songTitle"]]];
}
} else {
// Log details of the failure
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
I'm not sure your logic really makes sense - you're using 4 API requests when all you need is 1 API request. Also, Jacob is right, you're filling an array from a background thread and as a result the main thread will see it as empty.
I think I understand what you're trying to do - try this
PFQuery *queryTracks = [PFQuery queryWithClassName:#"liveRadioPL"];
// use includeKey if slink and songTitle are pointers to other Parse classes
// from the context of your question you probably don't need to use includeKey
[queryTracks includeKey:"scLink"];
[queryTracks includeKey:"songTitle"];
NSArray *objects = [queryTracks findObjects];
NSMutableArray* scLinks = [[NSMutableArray alloc] init];
NSMutableArray* songTitles = [[NSMutableArray alloc] init];
for (PFObject* object in objects) {
[scLinks addObject:object[#"scLink"]];
[songTitles addObject:object[#"songTitles"]];
}
I hope this helps, good luck!
I am trying to query the _User Class from Parse to use it on a TableViewCell. I am getting a nil value from it. I did have it working at one time with a much simpler, but not recommended, query:
Working query (not recommended):
- (NSArray *)loadUsers {
PFQuery *users = [PFUser query];
return [users findObjects];}
Not working query:
- (void)loadAllUser:(void (^)(BOOL completion))completion {
PFQuery *query = [PFUser query];
__block NSArray *loadUsers = [NSArray new];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
for (User *user in objects) {
loadUsers = [loadUsers arrayByAddingObject:user];
}
[TaskController sharedInstance].loadAllUser = loadUsers;
}else {
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
}
I am subclassing the _User Class from Parse (just FYI)
The problem was when the method was called. The numberOfRowsInSection was not was passing a nil value.
I am currently using the query whereKey:#"name" equalTo:#"Tom Coomer" and it is working.
However I would like to create an array of the usernames from the results.
How would I approach this?
Thanks
I am using Parse.com and Xcode to write the app.
Well, I assume you're saving your query results to an array, so what you want to do is this:
NSMutableArray *array = [NSMutableArray array]
for(PFUser *user in arrayFromQuery)
{
[array addObject:user.username];
}
What this does is traverse through your array and gets the username from each user and adds it to a new array.
If you want to fetch only the username from the Parse :
PFQuery *query = [PFQuery queryWithClassName:#"_User"];
[query selectKeys:#[#"username"]];
[query findObjectsInBackgroundWithBlock:^(NSArray *results, NSError *error) {
// objects in results will only contain the username fields
}];
result array contains the name of all user.
And if u want to fetch all records and then create a array of username:
PFQuery *query = [PFQuery queryWithClassName:#"_User"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
// The find succeeded.
NSLog(#"Successfully retrieved %d user.", objects.count);
// Do something with the found objects
for (PFUser *object in objects)
{
[self.usernameArray addObject:object.username];
NSLog(#"%#", object.objectId);
}
} else {
// Log details of the failure
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
where usernameArray is a NSMutableArray.
I am stuck for a long time with boolean show/hide image. Image is placed in my cell. Only boolean is needed. Could anyone tell me what I am doing wrong?
PFQuery *query = [PFQuery queryWithClassName:#"Parseclass"];
[query whereKey:#"imagebool" equalTo:[NSNumber numberWithBool:[NSNumber numberWithBool:YES]];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
cell.discounts.hidden =YES;
}else{
cell.discounts.hidden =NO;
}
}];
EDIT:
PFQuery *query = [PFQuery queryWithClassName:#"parsecell"];
[query whereKey:#"imagebool" equalTo:[NSNumber numberWithBool:YES]];
[query findObjectsInBackgroundWithBlock:^(NSArray *object, NSError *error)
{
if (!error)
{
NSLog(#"Successfully retrieved: %#", object);
NSDictionary *dict = [object objectAtIndex:0];
BOOL boolean;
boolean = [[dict objectForKey:#"imagebool"] boolValue];
if(boolean==YES)
{
NSLog(#"BOOL1: %hhd", boolean);
cell.discounts.hidden = YES;
} else {
cell.discounts.hidden = NO;
NSLog(#"BOOL2: %hhd", boolean);
}
}
else
{
NSLog(#"Error: %#", [error localizedDescription]);
}
}];
Change below stuff :-
[NSNumber numberWithBool:[NSNumber numberWithBool:YES]] //No need for this double encoding.
Simple go with [NSNumber numberWithBool: YES].
Also
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error)
{
if (!error && objects) //Checking for object's just to know if your getting any result for condition that you provided in query.
{
//Then hide your image.
}else{
//Or show your image.
}
}];
Just in case if your storing image on parse and check if image is nil or stored. Then just simple call for column that is storing image and no boolean check condition. That way you would get object's and know which row/column in your app is to show/hide image. Also in that object you will get image and provide it in your app and no need to store on local memory of phone. Anything else do let me know.
UPDATE:-
As you will get the object(array).
[query findObjectsInBackgroundWithBlock:^(NSArray *object, NSError *error)
{
if (!error)
{
NSLog(#"Successfully retrieved: %#", object);
NSDictionary *dict = [object objectAtIndex:0];
//Now with dict you could simply check for key(boolean) and then depending on YES/NO ,you could hide/Show the image.
}
else
{
NSLog(#"Error: %#", [error localizedDescription]);
}
}];
Hope this might help you.
Two problems I see with your code:
For some reason you're double encoding YES, i.e. [NSNumber numberWithBool:[NSNumber numberWithBool:YES]], probably won't break things, but fix it
In the block you're checking for an error, but you're not checking the objects returned. The array will come back empty if nothing matched the query, add a check for objects.count > 0
I have looked ALL over the internet and found nothing, Please help me. Im trying to figure out how I can display a username from parse in my table view (detailTextLabel). When I do the code below my app only shows the PFUser Id not the username. It will display: <PFUser:H2AhEbYGal:(null)> { but I'm trying to display the username of that post.
Heres me saving the object:
PFUser *user = [PFUser currentUser];
PFObject *quoteNew = [PFObject objectWithClassName:#"New"];
quoteNew[#"author"] = user;
[quoteNew setObject:[[self quoteText] text] forKey:#"quoteText"];
Here is me trying to retrieve the user in a PFQuery:
PFQuery *query = [PFQuery queryWithClassName:#"New"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
// The find succeeded. The first 100 objects are available in objects'
[query includeKey:#"author"];
// PFObject *testObject = [query findObjects];
// PFUser *testUser = [testObject objectForKey:#"author"];
// NSLog(#"username: %#",testUser.username);
} else {
// Log details of the failure
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
Here is me trying to display it:
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#: %#",[object objectForKey:#"author"],[dateFormat stringFromDate:updated]];
You can just worry about [object objectForKey:#"author"] in that cell.detailTextLabel.text code.
This:
PFQuery *query = [PFQuery queryWithClassName:#"New"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
// The find succeeded. The first 100 objects are available in objects'
[query includeKey:#"author"];
// PFObject *testObject = [query findObjects];
// PFUser *testUser = [testObject objectForKey:#"author"];
// NSLog(#"username: %#",testUser.username);
} else {
// Log details of the failure
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
Should be:
PFQuery *query = [PFQuery queryWithClassName:#"New"];
// BEFORE WE QUERY
[query includeKey:#"author"];
[query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) {
if (!error) {
// Get your objects here
} else {
// Log details of the failure
NSLog(#"Error: %# %#", error, [error userInfo]);
}
}];
And this:
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#: %#",[object objectForKey:#"author"],[dateFormat stringFromDate:updated]];
Should be:
PFUser *userToDisplay = object[#"author"];
cell.detailTextLabel.text = [NSString stringWithFormat:#"%#: %#",userToDisplay.username,[dateFormat stringFromDate:updated]];
Because, as it stands, problem 1 is you're saying to include the author AFTER you have already queried parse. Problem 2 is that you're trying to display the whole user, you need to get the user, and then print the username value.