我有一个由搜索功能填充的表格。单元格中有两个按钮，对用户说“是”和“否”表示“是”。有一个插入函数将选择插入数据库。不幸的是，表中的值没有传递给insert函数。在insert函数中，我使用的是guestusername.text，它是我单元格中标签的名称。我收到错误'使用未解析的标识符guestusername'。我已经尝试了我能想到的一切，代码如下。
class MyShotsViewController: UIViewController, UITableViewDelegate, UITableViewDataSource {
var guest = [AnyObject]()
var avas = [UIImage]()
var valueToPass:String!
var revieweduser:String!
var age = [AnyObject]()
var city = [AnyObject]()
var state = [AnyObject]()
@IBOutlet var tableView: UITableView!
var cell: MyShotsCell?
var index = 0
override func viewDidLoad() {
super.viewDidLoad()
doSearch("")
}
// cell numb
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return guest.count
}
// cell config
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! MyShotsCell
// get one by one user related inf from users var
let guest2 = guest[indexPath.row]
let ava = avas[indexPath.row]
// shortcuts
let guestname = guest2["username"] as? AnyObject
let age = guest2["age"]
let city = guest2["city"] as? String
let state = guest2["state"] as? String
// refer str to cell obj
cell.guestusername.text = guestname as! String
cell.ageLbl.text = (NSString(format: "%@", age as! CVarArg) as String)
cell.cityLbl.text = city
cell.stateLbl.text = state
cell.avaImg.image = ava as? UIImage
return cell
}
// search / retrieve users
public func doSearch(_ guestusername : String) {
// shortcuts
let username = user?["username"] as! String
let url = URL(string: "http://www.xxxxx.com/xxxxx.php")!
var request = URLRequest(url: url) // create request to work with users.php file
request.httpMethod = "POST" // method of passing inf to users.php
let body = "revieweduser=\(username)" // body that passes inf to users.php
request.httpBody = body.data(using: .utf8) // convert str to utf8 str - supports all languages
// launch session
URLSession.shared.dataTask(with: request) { data, response, error in
// getting main queue of proceeding inf to communicate back, in another way it will do it in background
// and user will no see changes :)
DispatchQueue.main.async(execute: {
if error == nil {
do {
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
// clean up
self.guest.removeAll(keepingCapacity: false)
self.avas.removeAll(keepingCapacity: false)
self.tableView.reloadData()
// delcare new secure var to store json
guard let parseJSON = json else {
print("Error while parsing")
return
}
guard let parseUSERS = parseJSON["users"] else {
print(parseJSON["message"] ?? [NSDictionary]())
return
}
self.guest = parseUSERS as! [AnyObject]
print(self.guest)
// for i=0; i < users.count; i++
for i in 0 ..< self.guest.count {
// getting path to ava file of user
let ava = self.guest[i]["ava"] as? String
let revieweduser = self.guest[i]["username"] as? String
let age = (NSString(format: "%@", self.guest[i]["age"] as! CVarArg) as String)
let city = self.guest[i]["city"] as? String
let state = self.guest[i]["state"] as? String
self.tableView.reloadData()
} catch {
DispatchQueue.main.async(execute: {
let message = "\(error)"
appDelegate.infoView(message: message, color: colorSmoothRed)
})
return
}
} else {
DispatchQueue.main.async(execute: {
let message = error!.localizedDescription
appDelegate.infoView(message: message, color: colorSmoothRed)
})
return
}
})
} .resume()
}
// custom body of HTTP request to upload image file
func createBodyWithParams(_ parameters: [String: String]?, boundary: String) -> Data {
let body = NSMutableData();
if parameters != nil {
for (key, value) in parameters! {
body.appendString("--\(boundary)\r\n")
body.appendString("Content-Disposition: form-data; name=\"\(key)\"\r\n\r\n")
body.appendString("\(value)\r\n")
}
}
return body as Data
}
func insertShot(_ rating : String) {
self.tableView.reloadData()
let reviewer = user?["username"] as! String
// url path to php file
let url = URL(string: "http://www.xxxxxx.com/xxxxxxx.php")!
var request = URLRequest(url: url)
request.httpMethod = "POST"
// param to be passed to php file
let param = [
"user" : reviewer,
"revieweduser" : cell?.guestusername.text,
"rating" : rating
] as [String : Any]
// body
let boundary = "Boundary-\(UUID().uuidString)"
request.setValue("multipart/form-data; boundary=\(boundary)", forHTTPHeaderField: "Content-Type")
// ... body
request.httpBody = createBodyWithParams(param as? [String : String], boundary: boundary)
// launch session
URLSession.shared.dataTask(with: request) { data, response, error in
// get main queu to communicate back to user
DispatchQueue.main.async(execute: {
if error == nil {
do {
// json containes $returnArray from php
let json = try JSONSerialization.jsonObject(with: data!, options: .mutableContainers) as? NSDictionary
// declare new var to store json inf
guard let parseJSON = json else {
print("Error while parsing")
return
}
// get message from $returnArray["message"]
let message = parseJSON["message"]
//print(message)
// if there is some message - post is made
if message != nil {
// reset UI
// self.msgTxt.text = ""
// switch to another scene
//self.tabBarController?.selectedIndex = 3
_ = self.navigationController?.popViewController(animated: true)
}
} catch {
// get main queue to communicate back to user
DispatchQueue.main.async(execute: {
let message = "\(error)"
appDelegate.infoView(message: message, color: colorSmoothRed)
})
return
}
} else {
// get main queue to communicate back to user
DispatchQueue.main.async(execute: {
let message = error!.localizedDescription
appDelegate.infoView(message: message, color: colorSmoothRed)
})
return
}
})
}.resume()
return
}
@IBAction func yesBtn_clicked(_ sender: UIButton) {
self.insertShot("Yes")
}
@IBAction func noBtn_clicked(_ sender: UIButton) {
self.insertShot("No")
}
}