如何在客户端映射对象(DTO)? [英] How to map objects (DTO) on client side?

问题描述

• 打字稿
• ABP + .NET Core

我正在使用网格插入行(我正在使用的网格是DevExtreme框架的组件).无论如何，与其他网格类似，当插入记录时，它会引发onRowInserting事件，并提供插入的行作为参数.在这种情况下，我需要将该匿名"对象(插入的数据)转换为我的客户端DTO.

I'm using a grid to insert rows (the grid I'm using is a component of the DevExtreme framework). Anyway, similar to other grids, it raises onRowInserting events when the records are inserted, providing the inserted row as a parameter. I need to convert that "anonymous" object (the inserted data) to my client-side DTO in this event.

onRowInserting(e) {
    let mynewrow: ItemDto = e.data; // e.data contains the inserted row
}

为了更好地理解我需要实现的目标，请阅读这篇文章:

To better understand what I need to achieve, please read this post:

将行添加到DevExtreme网格(角度)-模型/模式

ItemDto:

export class ItemDto implements IItemDto {
    description: string;
    note: string;
    quantita: number;
    postId: number;
    id: number;

    constructor(data?: IItemDto) {
        if (data) {
            for (var property in data) {
                if (data.hasOwnProperty(property))
                    (<any>this)[property] = (<any>data)[property];
            }
        }
    }

    init(data?: any) {
        if (data) {
            this.description = data["description"];
            this.note = data["note"];
            this.quantita = data["quantita"];
            this.postId = data["postId"];
            this.id = data["id"];
        }
    }

    static fromJS(data: any): ItemDto {
        let result = new ItemDto();
        result.init(data);
        return result;
    }

    toJSON(data?: any) {
        data = typeof data === 'object' ? data : {};
        data["description"] = this.description;
        data["note"] = this.note;
        data["quantita"] = this.quantita;
        data["postId"] = this.postId;
        data["id"] = this.id;
        return data; 
    }

    clone() {
        const json = this.toJSON();
        let result = new ItemDto();
        result.init(json);
        return result;
    }
}

export interface IItemDto {
    description: string;
    note: string;
    quantita: number;
    postId: number;
    id: number;
}

以及下面的e.data内容(目前，我仅向网格中添加了一些列，因此并不存在所有字段).

And below, the content of e.data (at this moment, I've added only some columns to the grid, so not all fields are present).

Object {
    __KEY__: "7c2ab8-1ff6-6b53-b9d7-ba25c27"
    description: "mydescription"
    id: 32
    note: "mynote"
    postId: 4
    quantita: 2
     >  __proto__: Object { constructor; , _defineG....
}

此图像更好地表示了对象: https://imgur.com/ihVZrDh

This image represents the object better: https://imgur.com/ihVZrDh

我不确定在let mynewrow: ItemDto行中做了什么. 我不知道它是否正确，或者是否足以在以后使用该变量，然后将其传递给保存新行的服务.

I'm not sure what I did in the line let mynewrow: ItemDto. I don't know if it is correct, or if it is enough to use the variable later, passing it to the service that saves the new row.

推荐答案

您可以使用装饰器和序列化器.请在此处查看ts的lib: https://www.npmjs.com/package/serialize-ts

You can use decorators and serializers. See lib for ts here: https://www.npmjs.com/package/serialize-ts

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