Question

我有一个用户搜索学校，然后点击他们想要的那个。在cellForRowAtIndexPath中，我查询所选择的学校并获取其objectId。然后我将objectId设置为指针，＆＃34; school_name＆＃34;在PFUser.currentUser中。指针指向＆＃34; Schools＆＃34;列出所有学校的班级。我收到的错误是，＆＃34;密钥school_name的无效类型，预期*学校，但得到字符串（代码：111，版本：1.12.0）＆＃34;。因为objectId是一个字符串，所以我似乎无法绕过它。我甚至可以打印出对象正确的对象。

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath)
{

    let spinningActivity = MBProgressHUD.showHUDAddedTo(self.view, animated: true)
    spinningActivity.labelText = "Just a Moment"
    spinningActivity.detailsLabelText = "Adding Details"

    let schoolIndexPath = tableView.indexPathForSelectedRow!
    let selectedCell = tableView.cellForRowAtIndexPath(schoolIndexPath)! as UITableViewCell
    let school : String = String(selectedCell.textLabel!.text!)

    let schoolObjectIdQuery = PFQuery(className:"Schools")
    schoolObjectIdQuery.whereKey("school_name", matchesRegex: school)



    let query = PFQuery.orQueryWithSubqueries([schoolObjectIdQuery])

    if reachabilityStatus == kNOTREACHABLE {

        spinningActivity.hide(true)



        self.displayAlert("No Internet Connection", message: "Please connect to the internet before continuing.")


    } else {

        query.findObjectsInBackgroundWithBlock {
            (results: [PFObject]?, error: NSError?) -> Void in

            if error != nil {

                self.displayAlert("Error", message: error!.localizedDescription)

            }

            if let objects = results {

                self.searchResults.removeAll(keepCapacity: false)

                for object in objects {

                    let schoolObjectId = object.objectId!

                    let addDetails : PFUser = PFUser.currentUser()!

//                        let schoolObjectIdFormatted = PFObject(withoutDataWithClassName: "school_name", objectId: schoolObjectId)

                    addDetails.setObject(schoolObjectId, forKey: "school_name")

                    print(school)
                    print(schoolObjectId)

                    addDetails.saveInBackgroundWithBlock({ (success:Bool, error:NSError?) -> Void in



                        if error != nil {

                            spinningActivity.hide(true)

                            self.displayAlert("Error", message: error!.localizedDescription)

                        }

                        if success {

                            spinningActivity.hide(true)

                            self.dismissViewControllerAnimated(true, completion: nil)

                            print("Success")

                        }

                    })



                }



            }
        }
    }

}

Answer 1

因为您正在尝试使用指针...不是字符串。您需要保存整个学校对象，而不是保存objectId。

Answer 2

我认为您的代码存在更多错误。为什么你的每个下载对象都有addDetails["school_id"] = PFObject(withoutDataWithClassName: "School", objectId: "\(schoolObjectId)") saveInBackGround。

如果你想存储指针，语法就是这样

pFirst

school_id是Parse DB中的一个列名，它是类School的指针

使用Swift设置指向Parse的指针

2 个答案: