从 JSON 响应中创建一个数组

Question

我有以下响应来获取区域，但我需要一个带有分隔符的单独数组

 {
        "name" : "Abu Hail",
        "city_id" : 1,
        "pk" : 227,
        "city" : "Dubai"
      },
      {
        "name" : "Academic City",
        "city_id" : 1,
        "pk" : 184,
        "city" : "Dubai"
      },
      {
        "name" : "Al Barari",
        "city_id" : 1,
        "pk" : 185,
        "city" : "Dubai"
      },
      {
        "name" : "Al Barsha 1,2 & 3",
        "city_id" : 1,
        "pk" : 166,
        "city" : "Dubai"
      },

如何从下面的名称中创建一个数组

 ["Abu Hail", "Academic City", "Al Barari", "Al Barsha 1,2 & 3"]

以下是我获得上述响应的代码

func getAreas(){
        let headers: HTTPHeaders = [
            "Authorization": "Token \(token!)",
            "Accept": "application/json"
        ]
        AF.request("\(staging.url)/api/addresses/areas/", method: .get, encoding: URLEncoding(), headers: headers).responseJSON { (response:DataResponse<Any>) in

            switch response.result {

            case let .success(value):

                let json = JSON(value)
                print("Areas Array: \(json)")

Answer 1

最好创建可编码对象

// MARK: - AreaElement
struct AreaElement: Codable {
    let name: String?
    let cityID, pk: Int?
    let city: String?

    enum CodingKeys: String, CodingKey {
        case name
        case cityID = "city_id"
        case pk, city
    }
}

现在你可以像

一样使用JSONDecoder直接解析

 fileprivate func retrieve<T: Decodable>(data: Data, type: T.Type) -> T? {
        let decoder = JSONDecoder()
        do {
            let model = try decoder.decode(type, from: data)
            return model
        } catch(let error) {
            return nil
        }
   }


    AF.request("\(staging.url)/api/addresses/areas/", method: .get, encoding: URLEncoding(), headers: headers).responseData { (response:DataResponse<Data>) in


  if let data =  response.data {
      let models = self.retrieve(data: data, type: [Area].self)

       // How you get name from model  with one line 
       let names = models?.map {[=11=].name} 
    }

       .......

希望对您有所帮助

Answer 2

使用以下方法创建数组：

if let array = array as? [[String : Any]] {
   let namesArray = array.compactMap { [=10=]["name"] } as? [String]
}

从 JSON 响应中创建一个数组

Make an array out of JSON response

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