角度8如何将父类值传递给子类答案

【问题标题】：angular 8 how to pass parent class value to child class角度8如何将父类值传递给子类
【发布时间】：2021-03-14 11:08:41
【问题描述】：

我想为buyer.cnic、buyer.name 和buyer.phone 分配价值数据。我得到的值是 {sCommercial: true 玛拉：“12” 总金额：“0121233123” }

export class AddDhaFile {
  buyer: Buyer[];
  dealNumber?: string;
  marla: number;
  isCommercial: boolean;
  totalAmount: number;
  payments?: Payment[];
  constructor(value: any) {
    this.marla = value.marla;
    this.isCommercial = value.isCommercial;
    this.totalAmount = value.totalAmount;
  }
}

export class Buyer {
  name: string;
  cnic: string;
  phone: string;
  constructor(value: any) {
    this.name = value.name;

    this.cnic = value.cnic;
    this.phone = value.phone;
  }
}

【问题讨论】：

标签： angular typescript interface

【解决方案1】：

如果您想将数据从父母传递给孩子，您可以通过 3 种方式进行。 https://angular.io/guide/component-interaction 这是有关如何执行此操作的链接。

【讨论】：

【解决方案2】：

我假设值对象看起来像这样。

value = {
isCommercial: true,
marla: "12",
totalAmount: "0121233123",
buyer: {name: 'xyx' , cnic: 'some digits', phone:'0900 78601'}
}


export class AddDhaFile {
  buyer: Buyer[];
  dealNumber?: string;
  marla: number;
  isCommercial: boolean;
  totalAmount: number;
  payments?: Payment[];
  constructor(value: any) {
    this.marla = value.marla;
    this.isCommercial = value.isCommercial;
    this.totalAmount = value.totalAmount;
    this.buyer.append(new Buyer(value.buyer))
  }
}

或者如果值对象看起来像这样。

value = {
isCommercial: true,
marla: "12",
totalAmount: "0121233123",
buyers: [{...}, {...}, {...}]
}

export class AddDhaFile {
  buyer: Buyer[];
  dealNumber?: string;
  marla: number;
  isCommercial: boolean;
  totalAmount: number;
  payments?: Payment[];
  constructor(value: any) {
    this.marla = value.marla;
    this.isCommercial = value.isCommercial;
    this.totalAmount = value.totalAmount;
    this.buyer = value.buyers.map(buyer => new Buyer(buyer)))
  }
}

【讨论】：