Sometimes not returning value

[mkaya93]

Hi,

I'm using parse but I have a problem with parse with ios.

Sometimes I can't get values from parse server. It's not giving error and not returning a value.

[Abderezai]

Please describe how your requesting data. Show your query, or cloud function call. And if cloud function also show our code in that function.

[hramos]

We are closing this issue due to a lack of sufficient information.

Please refer to this issue for an example of a great bug report.

You may use Server Fault for questions about managing Parse Server.

For code-level and/or implementation-related questions or technical support, please refer to Stack Overflow.

[mkaya93]

let query = PFQuery(className: "Group")
        query.orderByDescending("updatedAt")
        query.whereKey("members", equalTo: PFUser.currentUser()!)


        query.findObjectsInBackgroundWithBlock { (groups, error) in
            if error == nil {
                if groups?.count == 0 {
                    self.isEmpty = true
                    //self.tableView.hidden = true
                    self.emptyView.frame = CGRectMake(0, 130, self.view.frame.size.width, self.emptyView.frame.size.height)
                    self.emptyView.backgroundColor = UIColor(hex: "F5F9FC")
                    self.view.addSubview(self.emptyView)
                    self.emptyView.titleLabel.text = "dontbelonggroup".localized()
                    self.emptyView.createNewGroupButton.setTitle("emptyViewButton".localized(), forState: .Normal)
                    self.emptyView.createNewGroupButton.addTarget(self, action: #selector(self.createNewGroup(_:)), forControlEvents: .TouchUpInside)
                }else {
                    self.groups = groups!
                    self.isEmpty = false
                    self.emptyView.removeFromSuperview()
                }

                self.tableView.reloadData()
            }else {
                print(error)
            }
            self.refreshController.endRefreshing()
            self.loading.hideActivityIndicatorWithAnimation(self.view)

        }

@Abderezai that's my code. Weird part of this issue is its only returning null on apps load. When I trigger it second time its returning with objects.

[Abderezai]

I am guessing that you have ACL restrictions on the object that you are reading, and the session token is yet not initialized properly on app load. Do you do this in parallel to the app load?

[mkaya93]

@Abderezai actually I check the acl for this class and its public write + read also I'm initializing it after viewdidload

[Abderezai]

check ACL for that object, the class level permissions and the acl are not the same.
Also if you can not call query after viewdidload, and hook it up to a button, then see if same issue is still happening. Also maybe remove Parse Server URL so you connect to parse.com and see if the same issue is hapening there?

[mkaya93]

I checked acl and its "public write and read" also I changed my database and location but still I am getting this.

Also @hramos a few people getting this error too.So I think its a bug.

[mkaya93]

problem is happening cause of this line

query.whereKey("members", equalTo: currentUser!)

which is shown by @hramos at this link.

https://parse.com/questions/how-do-i-query-using-pfrelation-when-i-just-have-pfuser

I used this like you said but I can't getting objects sometime.

[hramos]

That answer of mine is well over two years old, but the concept remains the same. I highly recommend that you move this over to Stack Overflow as that is a better fit for this kind of Q&A.

[mkaya93]

I already did but I couldn't get the answer.I'm just trying to findobjects which is currentUser already member and I can't. I checked internet because of this problem.