如何使用"addAttributeMappings"添加实体类的对象(DTO的值).在RestKit中? [英] How to add objects of entity class(DTO's value) using "addAttributeMappings" in RestKit?

问题描述

我的json响应不仅包含字符串，还包含DTO数组.对象映射的格式不正确.

My json response contains not only strings, but also array of DTO. Object mapping is not happening in the right format.

{
  "id": null,
  "componentName": "Home Loan",
  "dynamicTableDetailDTOList": [
    {
      "id": 1,
      "fieldName": "username",
      "fieldType": "string",
      "isJoin": false,
      "joinType": null,
      "joinTable": null,
      "joinField": null,
      "displayField": null,
      "defaultValue": null,
      "length": 30,
      "label": "Name",
      "isrequired": true,
      "searchable": null,
      "dynamicTable": null
    },
    {
      "id": 2,
      "fieldName": "age",
      "fieldType": "integer",
      "isJoin": false,
      "joinType": null,
      "joinTable": null,
      "joinField": null,
      "displayField": null,
      "defaultValue": null,
      "length": 2,
      "label": "Age",
      "isrequired": true,
      "searchable": null,
      "dynamicTable": null
    },
    {
      "id": 3,
      "fieldName": "Gender",
      "fieldType": "radio",
      "isJoin": false,
      "joinType": [
        {
          "displayId": 0,
          "Value": "Male"
        },
        {
          "displayId": 1,
          "Value": "Female"
        }
      ],
      "joinTable": null,
      "joinField": null,
      "displayField": null,
      "defaultValue": null,
      "length": 30,
      "label": "Gender",
      "isrequired": true,
      "searchable": null,
      "dynamicTable": null
    },
    {
      "id": 4,
      "fieldName": "education",
      "fieldType": "combo",
      "isJoin": false,
      "joinType": [
        {
          "displayId": 0,
          "Value": "Btech"
        },
        {
          "displayId": 1,
          "Value": "Mca"
        },
        {
          "displayId": 2,
          "Value": "Mba"
        },
        {
          "displayId": 3,
          "Value": "Mcom"
        }
      ],
      "joinTable": null,
      "joinField": null,
      "displayField": null,
      "defaultValue": null,
      "length": 30,
      "label": "Education",
      "isrequired": true,
      "searchable": null,
      "dynamicTable": null
    }
  ]
}

下面给出的是我的实体模型. (请注意，dynamicTableDetailDTOList是DTO的数组):

class LoanDetailModel: NSObject {

    var id:Any?
    var componentName = ""
    var dynamicTableDetailDTOList:[DynamicTableDetailDTOList] = []
}

class DynamicTableDetailDTOList: NSObject {

    var id:Int?
    var fieldName:String = ""
    var fieldType:String = ""
    var isJoin:Bool?
    var length:Int?
    var label:String = ""
    var isrequired:Bool?
    var searchable:Bool?
}

在我的ViewController中，调用了一个回调方法，

override func viewDidLoad() {
    super.viewDidLoad()

    let loanDetailService = LoanDetailService()
    loanDetailService.getLoanDetails(success: { (model) in
        self.loanDetailModel = model!
        self.loanDetailTable.reloadData()
    })
    { (errorString) in
        let alert = UIAlertController(title: "Alert",
                                      message: errorString,
                                      preferredStyle: UIAlertControllerStyle.alert)
        alert.addAction(UIAlertAction(title: "Ok", style: UIAlertActionStyle.default, handler: nil))
        self.present(alert, animated: true, completion: nil)
    }
}

在LoanDetailService类中，与服务调用相关的所有代码均在其中实现:

func getLoanDetails(success: @escaping((_ loanDetailModel: LoanDetailModel?) -> ()),
                    failure: @escaping ((_ error:String) -> ())) {

    // Define mappings
    let postMapping: RKObjectMapping = RKObjectMapping(for: LoanDetailModel.self)
    postMapping.addAttributeMappings(from: ["id", "componentName", "dynamicTableDetailDTOList"])


    // Define response decriptor
    let statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClass.successful)
    let resDescriptor = RKResponseDescriptor(mapping: postMapping, method: RKRequestMethod.GET, pathPattern: nil, keyPath: nil, statusCodes: statusCodes)

    // Create object manager
    let url = URL(string: baseURL)
    let jsonPlaceholderManager = RKObjectManager(baseURL: url)
    jsonPlaceholderManager?.addResponseDescriptor(resDescriptor)
    RKObjectManager.setShared(jsonPlaceholderManager)

    // Perform GET request
    RKObjectManager.shared().getObjectsAtPath(appendedURL, parameters: nil, success: { (operation, mappingResult) -> Void in
        let loanDetailModel: LoanDetailModel = mappingResult!.firstObject as! LoanDetailModel
        success(loanDetailModel)

    }) { (operation, error) -> Void in
        failure((error?.localizedDescription)!)
    }

}

如何对实体模型进行更改?

推荐答案

以下解决了我的问题:

在LoanDetailServiceClass中，

In LoanDetailServiceClass,

func getLoanDetails(success: @escaping((_ loanDetailModel: LoanDetailModel?) -> ()),
                failure: @escaping ((_ error:String) -> ())) {

    // Define mappings
    let postMapping: RKObjectMapping = RKObjectMapping(for: LoanDetailModel.self)
    postMapping.addAttributeMappings(from: ["id","componentName"])

    let dTOListMapping: RKObjectMapping = RKObjectMapping(for: DynamicTableDetailDTOList.self)
    dTOListMapping.addAttributeMappings(from: ["fieldName",
                                               "fieldType",
                                               "label"])
    postMapping.addRelationshipMapping(withSourceKeyPath: "DynamicTableDetailDTOList" ,
                                       mapping: dTOListMapping)

    // Define response decriptor
    let statusCodes = RKStatusCodeIndexSetForClass(RKStatusCodeClass.successful)
    let resDescriptor = RKResponseDescriptor(mapping: postMapping, method: RKRequestMethod.GET, pathPattern: nil, keyPath: nil, statusCodes: statusCodes)

    // Create object manager
    let url = URL(string: baseURL)
    let jsonPlaceholderManager = RKObjectManager(baseURL: url)
    jsonPlaceholderManager?.addResponseDescriptor(resDescriptor)
    RKObjectManager.setShared(jsonPlaceholderManager)

    // Perform GET request
    RKObjectManager.shared().getObjectsAtPath(appendedURL, parameters: nil, success: { (operation, mappingResult) -> Void in
        let loanDetailModel: LoanDetailModel = mappingResult!.firstObject as! LoanDetailModel
        success(loanDetailModel)

    }) { (operation, error) -> Void in
        failure((error?.localizedDescription)!)
    }
}

这篇关于如何使用"addAttributeMappings"添加实体类的对象(DTO的值).在RestKit中?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！