swift - 我无法使用具有 3 个选项的 UIPickerView 查询 Firestore

Question

我正在尝试使用具有 3 个字段的 UIPickerView 查询 Firestore，但没有显示任何内容。如果我注释掉其中的 2 个字段并运行查询，我会得到结果。知道我遗漏了什么或做错了什么。请帮忙。

func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
 if hospNameField.isFirstResponder {
     let itemselected = hospt[row]
     hospNameField.text = itemselected
 } else if teamNameField.isFirstResponder {
     let itemselected = team[row]
     teamNameField.text = itemselected
 } else if mdNameField.isFirstResponder {
     let itemselected = assignedmd[row]
     mdNameField.text = itemselected
 }

 @IBAction func getData(_ sender: Any) {
 if HOSP != (hospNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("hosp", isEqualTo: (hospNameField.text!))
 } else if TEAM != (teamNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("team", isEqualTo: (teamNameField.text!))
 } else if ASSIGNEDMD != (mdNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("assignedmd", isEqualTo: (mdNameField.text!))
     query.getDocuments { (snapshot, error) in
         if let err = error {
             debugPrint("error getting data: \(err)")
         } else {
             for document in (snapshot?.documents)! {
                 print(document.data())
             }

Answer 1

我认为您缺少一个括号。如果你运行查询，你只执行第三个 if 语句。你应该关闭最后一个 else if，然后运行查询。

试试这个:

   @IBAction func getData(_ sender: Any) {
 if HOSP != (hospNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("hosp", isEqualTo: (hospNameField.text!))
 } else if TEAM != (teamNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("team", isEqualTo: (teamNameField.text!))
 } else if ASSIGNEDMD != (mdNameField.text!) {
     query = Firestore.firestore().collection(PTLIST_REF).whereField("assignedmd", isEqualTo: (mdNameField.text!))
}
     query.getDocuments { (snapshot, error) in
         if let err = error {
             debugPrint("error getting data: \(err)")
         } else {
             for document in (snapshot?.documents)! {
                 print(document.data())
             }
           }
       }
}