Question

我在reactjs项目中工作，我有一个小问题！

我需要用从输入框中插入的值替换模型json的值。

这是我的模型json：

import UIKit
import CoreData

class ResultsTableController: UITableViewController {

    var filteredCities = [Zone]()

    override func viewDidLoad() {
        super.viewDidLoad()

        self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "searchResultsCell")

    }

    // MARK: - Table view data source
    override func numberOfSections(in tableView: UITableView) -> Int {
        return 1
    }

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        return filteredCities.count
    }

    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "searchResultsCell", for: indexPath)

        if let city = filteredCities[indexPath.row].cityName {

            if let country = filteredCities[indexPath.row].countryName {
                cell.textLabel?.text = "\(city.replacingOccurrences(of: "_", with: " ")), \(country)"
            }
        }
        return cell
    }

    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

        let selectedCity = filteredCities[indexPath.row]

        let config = URLSessionConfiguration.default
        let session = URLSession(configuration: config)
        let originalUrl = "http://vip.timezonedb.com/v2.1/get-time-zone?key=\(apiKey)&format=json&by=city&city=\(selectedCity.cityName!)&country=\(selectedCity.countryCode!)"

        if let encodedUrl = URL(string: originalUrl.addingPercentEncoding(withAllowedCharacters: .urlFragmentAllowed)!) {
            print(encodedUrl)

            let task = session.dataTask(with: encodedUrl) { data, response, error in

                // Check for errors
                guard error == nil else {
                    print ("error: \(error!)")
                    return
                }
                // Check that data has been returned
                guard let content = data else {
                    print("No data")
                    return
                }

                do {
                    let decoder = JSONDecoder()
                    decoder.keyDecodingStrategy = .convertFromSnakeCase
                    let fetchedData = try decoder.decode(TimeZones.self, from: content)

                    if let city = fetchedData.zones?.first {

                        DispatchQueue.main.async {

                            if let context = (UIApplication.shared.delegate as? AppDelegate)?.persistentContainer.viewContext {

                                let savedCity = SavedCity(context: context)

                                if let offSet = city.gmtOffset {

                                    savedCity.formattedDate = city.formatted!.components(separatedBy: " ").first!
                                    savedCity.formattedTime = city.formatted!.components(separatedBy: " ").last!
                                    savedCity.formatted = city.formatted
                                    savedCity.countryCode = city.countryCode
                                    savedCity.formattedCityName = city.zoneName!.components(separatedBy: "/").last!
                                    savedCity.countryName = city.countryName
                                    savedCity.gmtOffset = Int32(offSet)
                                    savedCity.zoneName = city.zoneName
                                    savedCity.cityName = city.cityName

                                }
                                // Save to core data
                                (UIApplication.shared.delegate as? AppDelegate)?.saveContext()
                            }
                        }
                    }
                } catch let err {
                    print("Err", err)
                }
            }
            // execute the HTTP request
            task.resume()
            self.dismiss(animated: true, completion: nil)
        }
    }

    override func viewWillDisappear(_ animated: Bool) {
        let vc = TimeZonesTable()
        vc.refreshData()
    }
}

这是当数据可能不完整时从输入框接收的数据：

const createGdd = [
   {
    documentTypeId: 'SE',
    userName: 'POSTMAN',
    deviceUserAs400: 'WEB(CHROME,192.168.34.4)',
    emissionDate: 1575244800000,
    emitterStoreId: 12,
    receiver: {
        dni: '0096293000', 
        dniVerifyDigit: 'K',
        description: 'EPSON PERU S.A.',
        economicActivityCode: 'GENERICO',
        address: {
            city: 'MANZANA', 
            commune: 'PERA',
            description: 'AVDA.ANDRES SINO N.2287',
        },
        storeId: 0,
    },
    totalNetAmount: 94570,
    totalAmount: 112538,
    taxRate: 19,
    taxAmount: 19,
    details: [],
    others: {},
   },
]

这是最终的json：

 {
    "emitterStoreId": 9,
    "receiver": {
      "storeId": 0,
      "address": {}
    },
      "others": {
       "applicantBy": "Hernán",
       "packages": {
       "packageAmount": 2
    },
       "driverLastName": "Juan",
       "dispatcherName": "IC23S0"
    },
       "details": [
    {
        "sku": 1,
        "quantity": 1,
        "description": "Bolsas de color rojo ",
        "netPrice": 200,
        "amount": 1
    },
    {
        "sku": 1,
        "quantity": 2,
        "description": "Bolsas de color negra",
        "netPrice": 400,
        "amount": 1
    }
  ]
}

]

你知道这个问题的一些技术吗？

谢谢！

Answer 1

首先，您的createGdd对象在此处格式错误：

const createGdd = [
   {
    documentTypeId: 'SE',
    userName: 'POSTMAN',
    deviceUserAs400: 'WEB(CHROME,192.168.34.4)',
    emissionDate: 1575244800000,
    emitterStoreId: 12,
    receiver: {
        dni: '0096293000', 
        dniVerifyDigit: 'K',
        description: 'EPSON PERU S.A.',
        economicActivityCode: 'GENERICO',
        address: {
            city: 'MANZANA', 
            commune: 'PERA',
            description: 'AVDA.ANDRES SINO N.2287',
        },
        storeId: 0,
    },
    totalNetAmount: 94570,
    totalAmount: 112538,
    taxRate: 19,
    taxAmount: 19,
    details: [],
    others: {},
   },//<-- delete that extra comma
];

如果要向元素添加明细子集，只需将原始对象复制到新元素中，然后推送数据；

const createGdd = [
   {
    documentTypeId: 'SE',
    userName: 'POSTMAN',
    deviceUserAs400: 'WEB(CHROME,192.168.34.4)',
    emissionDate: 1575244800000,
    emitterStoreId: 12,
    receiver: {
        dni: '0096293000', 
        dniVerifyDigit: 'K',
        description: 'EPSON PERU S.A.',
        economicActivityCode: 'GENERICO',
        address: {
            city: 'MANZANA', 
            commune: 'PERA',
            description: 'AVDA.ANDRES SINO N.2287',
        },
        storeId: 0,
    },
    totalNetAmount: 94570,
    totalAmount: 112538,
    taxRate: 19,
    taxAmount: 19,
    details: [],
    others: {},
   }
];

let details = {
    "emitterStoreId": 9,
    "receiver": {
      "storeId": 0,
      "address": {}
    },
      "others": {
       "applicantBy": "Hernán",
       "packages": {
       "packageAmount": 2
    },
       "driverLastName": "Juan",
       "dispatcherName": "IC23S0"
    },
       "details": [
    {
        "sku": 1,
        "quantity": 1,
        "description": "Bolsas de color rojo ",
        "netPrice": 200,
        "amount": 1
    },
    {
        "sku": 1,
        "quantity": 2,
        "description": "Bolsas de color negra",
        "netPrice": 400,
        "amount": 1
    }
  ]
};

let element = JSON.parse(JSON.stringify(createGdd));
console.log("original object",createGdd)
element[0].details.push(details);
console.log("desired output",element);

希望有帮助

如何使用相同的键替换值的模型json？

1 个答案: