来自对象的 JSON 在 iOS Swift 3 中出现数组问题
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【中文标题】来自对象的 JSON 在 iOS Swift 3 中出现数组问题【英文标题】：JSON from Object with array issue in iOS Swift 3 【发布时间】：2017-04-22 06:56:06 【问题描述】：public class LessonAssignment
private var title : String?
private var category : String?
private var week : Int?
private var day : Int?
//Title
public func getTitle() -> String
return title!
public func setTitle(title : String)
self.title = title
//Category
public func getCategory() -> String
return category!
public func setCategory(category : String)
self.category = category
//Week
public func getWeek() -> Int
return week!
public func setWeek(week : Int)
self.week = week
//Day
public func getDay() -> Int
return day!
public func setDay(day : Int)
self.day = day
/**
Returns an array of models based on given dictionary.
Sample usage:
let lessonAssignment_list = LessonAssignment.modelsFromDictionaryArray(someDictionaryArrayFromJSON)
- parameter array: NSArray from JSON dictionary.
- returns: Array of LessonAssignment Instances.
*/
public class func modelsFromDictionaryArray(array:NSArray) -> [LessonAssignment]
var models = [LessonAssignment]()
for item in array
models.append(LessonAssignment(dictionary: item as! NSDictionary)!)
return models
/**
Constructs the object based on the given dictionary.
Sample usage:
let lessonAssignment = LessonAssignment(someDictionaryFromJSON)
- parameter dictionary: NSDictionary from JSON.
- returns: LessonAssignment Instance.
*/
init()
required public init?(dictionary: NSDictionary)
title = dictionary["title"] as? String
category = dictionary["category"] as? String
week = dictionary["week"] as? Int
day = dictionary["day"] as? Int
/**
Returns the dictionary representation for the current instance.
- returns: NSDictionary.
*/
public func dictionaryRepresentation() -> NSDictionary
let dictionary = NSMutableDictionary()
dictionary.setValue(self.title, forKey: "title")
dictionary.setValue(self.category, forKey: "category")
dictionary.setValue(self.week, forKey: "week")
dictionary.setValue(self.day, forKey: "day")
return dictionary
func toDictionary() -> [String : Any]
var dictionary = [String:Any]()
let otherSelf = Mirror(reflecting: self)
for child in otherSelf.children
if let key = child.label
dictionary[key] = child.value
return dictionary
public class LessonPlan
private var name : String?
private var weeks : Int?
private var days : Int?
private var hours : Int?
private var lessonAssignment = [LessonAssignment]()
private var lessonNote = [LessonNote]()
//Name
public func getName() -> String
if name == nil
return ""
else
return name!
public func setName(name : String)
self.name = name
//Weeks
public func getWeeks() -> Int
if weeks == 0
return 0
else
return weeks!
public func setWeeks(weeks : Int)
self.weeks = weeks
//Days
public func getDays() -> Int
if days == 0
return 0
else
return days!
public func setDays(days : Int)
self.days = days
//Hours
public func getHours() -> Int
if days == 0
return 0
else
return hours!
public func setHours(hours : Int)
self.hours = hours
//LessonAssignment
public func getLessonAssignment() -> [LessonAssignment]
return lessonAssignment
public func setLessonAssignment(lessonAssignment : [LessonAssignment])
self.lessonAssignment = lessonAssignment
//LessonNote
public func getLessonNote() -> [LessonNote]
return lessonNote
public func setLessonNote(lessonNote : [LessonNote])
self.lessonNote = lessonNote
/**
Returns an array of models based on given dictionary.
Sample usage:
let lessonPlan_list = LessonPlan.modelsFromDictionaryArray(someDictionaryArrayFromJSON)
- parameter array: NSArray from JSON dictionary.
- returns: Array of LessonPlan Instances.
*/
public class func modelsFromDictionaryArray(array:NSArray) -> [LessonPlan]
var models:[LessonPlan] = []
for item in array
models.append(LessonPlan(dictionary: item as! NSDictionary)!)
return models
/**
Constructs the object based on the given dictionary.
Sample usage:
let lessonPlan = LessonPlan(someDictionaryFromJSON)
- parameter dictionary: NSDictionary from JSON.
- returns: LessonPlan Instance.
*/
init()
required public init?(dictionary: NSDictionary)
name = dictionary["name"] as? String
weeks = dictionary["weeks"] as? Int
days = dictionary["days"] as? Int
hours = dictionary["hours"] as? Int
lessonAssignment = LessonAssignment.modelsFromDictionaryArray(array:dictionary["lessonAssignment"] as! NSArray)
lessonNote = LessonNote.modelsFromDictionaryArray(array: dictionary["lessonNote"] as! NSArray)
/**
Returns the dictionary representation for the current instance.
- returns: NSDictionary.
*/
public func dictionaryRepresentation() -> NSDictionary
let dictionary = NSMutableDictionary()
dictionary.setValue(self.name, forKey: "name")
dictionary.setValue(self.weeks, forKey: "weeks")
dictionary.setValue(self.days, forKey: "days")
dictionary.setValue(self.hours, forKey: "hours")
return dictionary
func toDictionary() -> [String : Any]
var dictionary = [String:Any]()
let otherSelf = Mirror(reflecting: self)
for child in otherSelf.children
print("Child = \(child)")
print("Child Label = \(String(describing: child.label))")
print("Child Value = \(child.value)")
if let key = child.label
dictionary[key] = child.value
return dictionary
公共类 ServerRequest
private var lessonPlan : LessonPlan?
init()
//LessonPlan
public func getLessonPlan() -> LessonPlan
return lessonPlan!
public func setLessonPlan(lessonPlan : LessonPlan)
self.lessonPlan = lessonPlan
func toDictionary() -> [String : Any]
var dictionary = [String:Any]()
let otherSelf = Mirror(reflecting: self)
for child in otherSelf.children
if let key = child.label
dictionary[key] = lessonPlan?.toDictionary()
return dictionary
当前响应 = ["lessonPlan": ["name": "test", "days": 2, "weeks": 1, "小时": 1, "lessonAssignment": [HSP.LessonAssignment, HSP.LessonAssignment], "lessonNote": []]]
预期反应 = ["lessonPlan": ["name": "test", "days": 2, "weeks": 1, "hours": 1, "lessonAssignment": [["title" : "some value 1", "category" : "some value", "week" : 1, "day" : 2]] , "教训笔记": []]]
我想添加的是数组的实际值，而不是 LessinAssignment 对象。任何线索如何解决这个问题。我知道我必须在 toDictionary 方法中添加更多逻辑，并且基于键“lessonAssignment”我必须获取每个数组并将键中的值添加为最终数组。
【问题讨论】：
不相关，但LessonPlan 类中的所有自定义 getter 和 setter 都是无意义的。这是斯威夫特！为什么所有属性都是可选的，尽管 setter 传递了非可选值？
lessonAssignment 键是一个 LessonAssignment 实例数组？
@vadian 是的，我们知道它很快，但我们遵循 getter/setter 作为我们的标准做法。
@chri 是的，课程分配是自定义类的数组。
并且您想要该实例的每个数组条目的属性作为课程分配键而不是整个实例？
【参考方案1】：
从我的评论来看，是这样的：
assignments.map(
(value: HSP.LessonAssignment) -> NSDictionary in
return value.toDictionary()
)
【讨论】：
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