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我正在使用Swift窗體庫：https://github.com/ortuman/SwiftForms這與Eureka非常相似。聲明失敗：self.form屬性務必分配
這裏是什麼，我試圖做一個解釋：在我的形式
我有2名拾荒者。 Picker1只是一個普通的選取器，而Picker2取決於Picker1的值。所以當用戶改變Picker1的值時。 Picker2中的選項也應該改變。要做到這一點，這是我的功能：
func change_data(){
row4.configuration[FormRowDescriptor.Configuration.Options] = ["hello", "from", "the"]
row4.value = "hello"
self.tableView.reloadData()
}
我用reloadData()看到我的2個採摘的值的變化。但不幸的是，我得到的錯誤：assertion failed: self.form property MUST be assigned!
我試着把該代碼放在頂部欄按鈕的操作，它的工作原理。
func submit(_: UIBarButtonItem!) {
//let message = self.form.formValues().description
//let alert: UIAlertView = UIAlertView(title: "Form output", message: message, delegate: nil, cancelButtonTitle: "OK")
//alert.show()
row4.configuration[FormRowDescriptor.Configuration.Options] = ["hello", "from", "the"]
row4.value = "hello"
self.tableView.reloadData()
}
但我需要調用reloadData()我的函數中，而不是在按鈕的點擊。
這裏是我的FormViewController的viewDidLoad中：
public override func viewDidLoad() {
super.viewDidLoad()
assert(form != nil, "self.form property MUST be assigned!")
navigationItem.title = form.title
}
我試圖做到的是這樣的： 
我有幾個拾荒者，最後選擇器將取決於從第二選擇的項目和第三。我稱這些功能爲更新我最後一個選擇器的內容。
這裏是我的FormViewController類：
import UIKit
import CoreData
import SwiftForms
class ExampleFormViewController: FormViewController {
struct Static {
static let nameTag = "name"
static let passwordTag = "password"
static let lastNameTag = "lastName"
static let jobTag = "job"
static let emailTag = "email"
static let URLTag = "url"
static let phoneTag = "phone"
static let enabled = "enabled"
static let check = "check"
static let segmented = "segmented"
static let picker = "picker"
static let birthday = "birthday"
static let categories = "categories"
static let button = "button"
static let stepper = "stepper"
static let slider = "slider"
static let textView = "textview"
}
var val_territory = [Int]()
var val_company = [Int]()
var val_facility = [Int]()
var val_specialty = [Int]()
var putu_company = ""
var putu_territory = ""
var putu_facility = ""
var str_territory = [String]()
var str_company = [String]()
var str_facility = [String]()
var str_specialty = [String]()
var territory: [Territory] = []
var company: [Company] = []
var facility: [Facility] = []
var specialty: [Specialty] = []
var row1 = FormRowDescriptor(tag: Static.picker, rowType: .Picker, title: "Territory")
var row2 = FormRowDescriptor(tag: Static.picker, rowType: .Picker, title: "Company")
var row3 = FormRowDescriptor(tag: Static.picker, rowType: .Picker, title: "Facility")
var row4 = FormRowDescriptor(tag: Static.picker, rowType: .Picker, title: "Specialty")
let name: String
var form2 = FormDescriptor(title: "Create Shift Entry")
init(_ coder: NSCoder? = nil) {
name = "Bar"
if let coder = coder {
super.init(coder: coder)
} else {
super.init(nibName: nil, bundle:nil)
}
}
required convenience init(coder: NSCoder) {
self.init(coder)
load_data()
self.loadForm()
}
override func viewDidLoad() {
super.viewDidLoad()
self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Save", style: .Plain, target: self, action: "submit:")
self.navigationItem.leftBarButtonItem = UIBarButtonItem(title: "Cancel", style: .Plain, target: self, action: "cancel:")
}
// MARK: Actions
func submit(_: UIBarButtonItem!) {
//let message = self.form.formValues().description
//let alert: UIAlertView = UIAlertView(title: "Form output", message: message, delegate: nil, cancelButtonTitle: "OK")
//alert.show()
row4.configuration[FormRowDescriptor.Configuration.Options] = ["hello", "from", "the"]
row4.value = "hello"
self.tableView.reloadData()
}
func cancel(_: UIBarButtonItem!) {
self.performSegueWithIdentifier("goto_main2", sender: self)
}
private func loadForm() {
let form = FormDescriptor(title: "Create Shift Entry")
let section1 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
row1.configuration[FormRowDescriptor.Configuration.Options] = str_territory
row1.value = str_territory[0]
section1.addRow(row1)
row2.configuration[FormRowDescriptor.Configuration.Options] = str_company
row2.value = str_company[0]
section1.addRow(row2)
row3.configuration[FormRowDescriptor.Configuration.Options] = str_facility
row3.value = str_facility[0]
section1.addRow(row3)
row4.configuration[FormRowDescriptor.Configuration.Options] = str_specialty
row4.value = str_specialty[0]
section1.addRow(row4)
let section2 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
var row = FormRowDescriptor(tag: Static.phoneTag, rowType: .Phone, title: "Scheduled Hours")
row.configuration[FormRowDescriptor.Configuration.CellConfiguration] = ["textField.placeholder" : "e.g. 8", "textField.textAlignment" : NSTextAlignment.Right.rawValue]
section2.addRow(row)
let section3 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
row = FormRowDescriptor(tag: Static.birthday, rowType: .DateAndTime, title: "Time In")
section3.addRow(row)
row = FormRowDescriptor(tag: Static.birthday, rowType: .DateAndTime, title: "Time Out")
section3.addRow(row)
let section4 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
row = FormRowDescriptor(tag: Static.enabled, rowType: .BooleanSwitch, title: "Missed Lunch")
section4.addRow(row)
let section5 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
row = FormRowDescriptor(tag: Static.textView, rowType: .MultilineText, title: "Notes")
section5.addRow(row)
let section8 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
row = FormRowDescriptor(tag: Static.button, rowType: .Button, title: "Add Staff Signature")
row.configuration[FormRowDescriptor.Configuration.DidSelectClosure] = {
self.view.endEditing(true)
} as DidSelectClosure
section8.addRow(row)
let section9 = FormSectionDescriptor(headerTitle: nil, footerTitle: nil)
row = FormRowDescriptor(tag: Static.button, rowType: .Button, title: "Add Supervisor Signature")
row.configuration[FormRowDescriptor.Configuration.DidSelectClosure] = {
self.view.endEditing(true)
} as DidSelectClosure
section9.addRow(row)
form.sections = [section1, section2, section3, section4, section5, section8, section9]
self.form = form
form2 = form
}
func load_data(){
let sortDescriptor = NSSortDescriptor(key: "orig_id", ascending: true)
let sortDescriptors = [sortDescriptor]
let facilityPredicate = NSPredicate(format: "facility = %@", NSNumber(integer: 1))
var appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
var context:NSManagedObjectContext = appDel.managedObjectContext
let fetchRequest = NSFetchRequest(entityName:"Company")
fetchRequest.sortDescriptors = sortDescriptors
let fetchRequestTerritory = NSFetchRequest(entityName:"Territory")
fetchRequestTerritory.sortDescriptors = sortDescriptors
let fetchRequestFacility = NSFetchRequest(entityName:"Facility")
fetchRequestFacility.sortDescriptors = sortDescriptors
let fetchRequestSpecialty = NSFetchRequest(entityName:"Specialty")
fetchRequestSpecialty.sortDescriptors = sortDescriptors
fetchRequestSpecialty.predicate = facilityPredicate
let error:NSError
do {
let company_temp = try context.executeFetchRequest(fetchRequest)
company = company_temp as! [Company]
for t in company {
val_company.append(t.orig_id! as Int)
str_company.append(t.name! as String)
}
print(company.count)
let territory_temp = try context.executeFetchRequest(fetchRequestTerritory)
territory = territory_temp as! [Territory]
for t in territory {
val_territory.append(Int(t.orig_id!)!)
str_territory.append(t.name! as String)
}
print(territory_temp.count)
let facility_temp = try context.executeFetchRequest(fetchRequestFacility)
facility = facility_temp as! [Facility]
for t in facility {
val_facility.append(Int(t.orig_id!)!)
str_facility.append(t.name! as String)
}
print(facility_temp.count)
let specialty_temp = try context.executeFetchRequest(fetchRequestSpecialty)
specialty = specialty_temp as! [Specialty]
for t in specialty {
val_specialty.append(Int(t.orig_id!)!)
str_specialty.append(t.name! as String)
}
print(specialty_temp.count)
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
}
func get_facility_ter(company: Int!){
//print("company: " + company)
//print("territory: " + territory!)
var appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
var context:NSManagedObjectContext = appDel.managedObjectContext
let sortDescriptor = NSSortDescriptor(key: "orig_id", ascending: true)
let sortDescriptors = [sortDescriptor]
let fetchRequest = NSFetchRequest(entityName:"Territory")
fetchRequest.sortDescriptors = sortDescriptors
do {
let territory_temp = try context.executeFetchRequest(fetchRequest)
var territory2 = territory_temp as! [Territory]
for t in territory2 {
val_territory.append(Int(t.orig_id!)!)
str_territory.append(t.name! as String)
}
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
if let company2 = company{
let companyPredicate = NSPredicate(format: "company = %@", NSNumber(integer: val_territory[str_territory.indexOf(putu_territory)!]))
let territoryPredicate = NSPredicate(format: "territory = %@", NSNumber(integer: val_territory[company]))
let predicate = NSCompoundPredicate(type: NSCompoundPredicateType.OrPredicateType, subpredicates: [companyPredicate, territoryPredicate])
let fetchRequestFacility = NSFetchRequest(entityName:"Facility")
fetchRequestFacility.predicate = predicate
print(companyPredicate)
do {
let facility_temp = try context.executeFetchRequest(fetchRequestFacility)
facility = facility_temp as! [Facility]
str_facility.removeAll()
val_facility.removeAll()
for t in facility {
val_facility.append(Int(t.orig_id!)!)
str_facility.append(t.name! as String)
}
row3.configuration[FormRowDescriptor.Configuration.Options] = str_facility
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
}
}
func get_facility_com(company: Int!){
//print("company: " + company)
//print("territory: " + territory!)
var appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
var context:NSManagedObjectContext = appDel.managedObjectContext
let sortDescriptor = NSSortDescriptor(key: "orig_id", ascending: true)
let sortDescriptors = [sortDescriptor]
let fetchRequest = NSFetchRequest(entityName:"Company")
fetchRequest.sortDescriptors = sortDescriptors
do {
let company_temp = try context.executeFetchRequest(fetchRequest)
var company2 = company_temp as! [Company]
for t in company2 {
val_company.append(t.orig_id! as Int)
str_company.append(t.name! as String)
}
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
print(val_company.count)
print(str_company.count)
print(putu_company)
print(str_company)
print(str_company.contains(putu_company))
if let company2 = company{
let companyPredicate = NSPredicate(format: "company = %@", NSNumber(integer: val_company[company]))
let territoryPredicate = NSPredicate(format: "territory = %@", NSNumber(integer: val_company[str_company.indexOf(putu_company)!]))
let predicate = NSCompoundPredicate(type: NSCompoundPredicateType.OrPredicateType, subpredicates: [companyPredicate, territoryPredicate])
let fetchRequestFacility = NSFetchRequest(entityName:"Facility")
fetchRequestFacility.predicate = predicate
print(companyPredicate)
do {
let facility_temp = try context.executeFetchRequest(fetchRequestFacility)
facility = facility_temp as! [Facility]
str_facility.removeAll()
val_facility.removeAll()
for t in facility {
val_facility.append(Int(t.orig_id!)!)
str_facility.append(t.name! as String)
}
row3.configuration[FormRowDescriptor.Configuration.Options] = str_facility
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
}
}
func get_specialty(facility_txt: Int!){
print("VALUE OF FACILITY: " + String(facility_txt))
var appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
var context:NSManagedObjectContext = appDel.managedObjectContext
let sortDescriptor = NSSortDescriptor(key: "orig_id", ascending: true)
let sortDescriptors = [sortDescriptor]
let facilityPredicate = NSPredicate(format: "facility = %@", NSNumber(integer: val_facility[str_facility.indexOf(putu_facility)!]))
let fetchRequestSpecialty = NSFetchRequest(entityName:"Specialty")
fetchRequestSpecialty.sortDescriptors = sortDescriptors
fetchRequestSpecialty.predicate = facilityPredicate
do {
let specialty_temp = try context.executeFetchRequest(fetchRequestSpecialty)
specialty = specialty_temp as! [Specialty]
str_specialty.removeAll()
val_specialty.removeAll()
for t in specialty {
val_specialty.append(Int(t.orig_id!)!)
str_specialty.append(t.name! as String)
}
print(str_specialty)
self.form = form2
row4.configuration[FormRowDescriptor.Configuration.Options] = str_specialty
row4.value = "hello"
self.tableView.reloadData()
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
}
func put_company(putu: String!, row: Int!){
print("haler")
putu_company = putu
print(putu_company)
print(row)
get_facility_com(row)
}
func put_territory(putu: String!, row: Int!){
print("haler")
putu_territory = putu
print(putu_territory)
print(row)
get_facility_ter(row)
}
func put_facility(putu: String!, row: Int!){
print("haler")
putu_facility = putu
print(putu_facility)
print(row)
var appDel:AppDelegate = (UIApplication.sharedApplication().delegate as! AppDelegate)
var context:NSManagedObjectContext = appDel.managedObjectContext
let sortDescriptor = NSSortDescriptor(key: "orig_id", ascending: true)
let sortDescriptors = [sortDescriptor]
let fetchRequestFacility = NSFetchRequest(entityName:"Facility")
fetchRequestFacility.sortDescriptors = sortDescriptors
do {
let facility_temp = try context.executeFetchRequest(fetchRequestFacility)
facility = facility_temp as! [Facility]
for t in facility {
val_facility.append(Int(t.orig_id!)!)
str_facility.append(t.name! as String)
}
} catch let error as NSError {
// failure
print("Fetch failed: \(error.localizedDescription)")
}
print(val_facility)
get_specialty(val_facility[row])
}
}
我把這裏的功能：
import UIKit
public class FormPickerCell: FormValueCell, UIPickerViewDelegate, UIPickerViewDataSource {
// MARK: Properties
private let picker = UIPickerView()
private let hiddenTextField = UITextField(frame: CGRectZero)
struct MyVariables {
static var mv_territory = 0
static var mv_company = 0
static var mv_facility = 0
static var mv_specialty = 0
}
// MARK: FormBaseCell
public override func configure() {
super.configure()
accessoryType = .None
picker.delegate = self
picker.dataSource = self
hiddenTextField.inputView = picker
contentView.addSubview(hiddenTextField)
}
public override func update() {
super.update()
titleLabel.text = rowDescriptor.title
if let value = rowDescriptor.value {
valueLabel.text = rowDescriptor.titleForOptionValue(value)
if let options = rowDescriptor.configuration[FormRowDescriptor.Configuration.Options] as? NSArray {
let index = options.indexOfObject(value)
if index != NSNotFound {
picker.selectRow(index, inComponent: 0, animated: false)
}
}
}
}
public override class func formViewController(formViewController: FormViewController, didSelectRow selectedRow: FormBaseCell) {
if selectedRow.rowDescriptor.value == nil {
if let row = selectedRow as? FormPickerCell {
let options = selectedRow.rowDescriptor.configuration[FormRowDescriptor.Configuration.Options] as? NSArray
let optionValue = options?[0] as? NSObject
selectedRow.rowDescriptor.value = optionValue
row.valueLabel.text = selectedRow.rowDescriptor.titleForOptionValue(optionValue!)
row.hiddenTextField.becomeFirstResponder()
}
} else {
if let row = selectedRow as? FormPickerCell {
guard let optionValue = selectedRow.rowDescriptor.value else { return }
row.valueLabel.text = selectedRow.rowDescriptor.titleForOptionValue(optionValue)
row.hiddenTextField.becomeFirstResponder()
}
}
}
// MARK: UIPickerViewDelegate
public func pickerView(pickerView: UIPickerView, titleForRow row: Int, forComponent component: Int) -> String? {
return rowDescriptor.titleForOptionAtIndex(row)
}
public func pickerView(pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
let options = rowDescriptor.configuration[FormRowDescriptor.Configuration.Options] as? NSArray
let optionValue = options?[row] as? NSObject
rowDescriptor.value = optionValue
valueLabel.text = rowDescriptor.titleForOptionValue(optionValue!)
if(rowDescriptor.title == "Company"){
print("company")
print(valueLabel.text)
ExampleFormViewController().put_company(valueLabel.text, row: row)
}else if(rowDescriptor.title == "Territory"){
print("territory")
print(valueLabel.text)
ExampleFormViewController().put_territory(valueLabel.text, row: row)
}
else if(rowDescriptor.title == "Facility"){
print("facility")
print(valueLabel.text)
ExampleFormViewController().put_facility(valueLabel.text, row: row)
}
}
// MARK: UIPickerViewDataSource
public func numberOfComponentsInPickerView(pickerView: UIPickerView) -> Int {
return 1
}
public func pickerView(pickerView: UIPickerView, numberOfRowsInComponent component: Int) -> Int {
if let options = rowDescriptor.configuration[FormRowDescriptor.Configuration.Options] as? NSArray {
return options.count
}
return 0
}
}
我這樣做，把新的值到我的選擇器，只要在其他拾荒者所選擇的項目而改變。
你是什麼意思？ –
現在是相同的@matt –
如果你想要人們回答，你將不得不簡化代碼到最小的例子。有太多的代碼對這個問題沒有任何重要性，並且我覺得某些重要的部分不見了。 – Sulthan