Question

我努力从Eureka表格中提取确切的价值。以下是我的源代码：

    class CommunityReportViewController: FormViewController, MFMailComposeViewControllerDelegate{

        @IBOutlet weak var activityIndicator: UIActivityIndicatorView!
        var userTitleChoice: String = ""
        var userCategoryChoice : String = ""
        var userDescriptionChoice: String = ""



        @IBOutlet weak var submitReport: UIButton!



        override func viewDidLoad() {
            super.viewDidLoad()
            form +++ Section("Feedback Type")
                <<< SegmentedRow<String>("feedbackType"){
                    $0.options = ["Comments", "Bug Reports", "Questions"]
                    $0.value = "Comments"
                    }.onChange{ row in
                        let userDefault = NSUserDefaults.standardUserDefaults()
                        userDefault.setValue(row.value, forKey: "feedbackType")
                }

                +++ Section("Follow up?")
                <<< ActionSheetRow<String>("officeLocation"){
                    $0.title = "Where are you?"
                    $0.selectorTitle = "Please select the office you are located in"
                    $0.options = ["Singapore", "Prague", "New Jersey"]

                }
                +++ Section("Best time to contact you?")

                <<< PopoverSelectorRow<String>("preferredMethod"){
                    $0.title = "Preferred Method"
                    $0.options = ["Phone", "Email", "Do Not Contact"]

                }
                <<< DateRow("preferredDate"){
                    $0.title = "Preferred date"

                }
                <<< TimeInlineRow("preferredTime"){
                    $0.title = "Preferred time"
                    $0.noValueDisplayText = "-:--"

                }




                <<< ButtonRow() {
                $0.title = "Submit Feedback!"
                $0.onCellSelection(self.buttonTapped)
                }



        }

    func buttonTapped(cell: ButtonCellOf<String>, row: ButtonRow) {
        let valuesDictionary = form.values(includeHidden:true)
        print (valuesDictionary["feedbackType"], "Feedback")
        print (valuesDictionary["officeLocation"], "Office")
        print (valuesDictionary["preferredTime"], "Time")
        print (valuesDictionary["preferredMethod"], "Method")
        print (valuesDictionary["preferredDate"], "Date")
}
}

当没有提供输入时，valuesDictionary返回的结果如下所示：

Optional(Optional("Comments")) Feedback
Optional(nil) Office
Optional(nil) Time
Optional(nil) Method
Optional(nil) Date

如果提供了正确的输入，则返回以下结果：

Optional(Optional("Comments")) Feedback
Optional(Optional("New Jersey")) Office
Optional(Optional(2016-07-08 10:00:23 +0000)) Time
Optional(Optional("Email")) Method
Optional(Optional(2016-07-11 07:00:16 +0000)) Date

有没有办法只返回用户选择的值？因为返回的结果很难解析。示例I只希望返回以下结果

    Comments
    New Jersey
    Email
    2016-07-08 10:00:23 +0000
    2016-07-11 07:00:16 +0000

Answer 1

看起来您已经可以获取值了。您所要做的就是检查字段是否有值并打开选项：

if let feedbackType = valuesDictionary["feedbackType"] as? String
{    
    print(feedbackType) //should print only "Comments"   
}

如果值为nil，则不满足条件并跳过if块内的代码。

所以基本上当你打印出可选项时，它看起来像一个需要解析的复杂字符串，但它们只需要解包来访问实际值。

您可以在Apple文档here

中找到有关选项的更多信息

Answer 2

必须扩展以处理更多类型（int，...）

let fvalues = form.values().mapValues { value -> String in
    return value as? String ?? ""
}

如何提取从Eureka Forms解析的值？

2 个答案: