在Angular 2中将列和数据动态加载到表中 [英] Dynamically loading columns and data in to table in Angular 2

问题描述

我有一个要在其中创建表的HTML页面.该表中的列是动态的，这意味着使用any[]类型将它们从服务器中提取到组件中的变量中.该表中的数据也是动态的，这意味着在编程时，我不知道将要绑定到表中的列和数据.

I have an HTML page in which I want to create a table. The columns in this table are dynamic which means that they are fetched from the server into a variable in the component using any[] type. The data in this table is also dynamic which means that at the time of programming I don't know which columns and data will come to get bound in the table.

我尝试了下面的代码，但它似乎无法正常工作或出现任何错误.它只是在tbody中创建空的td.

I have tried below code but it doesn't seem to work or give any error. It just creates empty td in the tbody.

Expense.component.html

Expense.component.html

<div class="panel panel-default" style="margin-top:10px;">
<div class="panel-heading">
    Expenses
</div>
<div class="panel-body" style="position:relative">
    <div class="table-responsive">
        <table class="table">
            <thead>
                <tr>
                    <th *ngFor="#column of columns">
                        {{column}}
                    </th>
                </tr>
            </thead>
            <tbody>
                <tr *ngFor="#data of data">
                    <td *ngFor="#column of columns">
                        {{data.column}}
                    </td>
                </tr>
            </tbody>
        </table>
    </div>
</div>

在上面的代码中，成功创建了列，但是数据和列mashup无法正常工作.我确信Angular 2中一定有一种方法可以实现这一目标.

In the above code, the columns are getting created successfully but the data and column mashup is not working. I am sure there must be a way in Angular 2 to achieve this.

Expense.component.ts

Expense.component.ts

export class ExpenseComponent implements OnInit {
errorMessage: any[];
columns: string[];
data: any[];

constructor(private _commonService: CommonService, private _expenseService: ExpenseService) {

}

ngOnInit(): void {
    this._commonService.getColumnNames('condomanagement', 'expenses')
        .subscribe(data => this.promise(data), error => this.errorMessage = <any>error);
}

private promise(data: string[]) {
    this.columns = data;
    this._expenseService.getExpenses('condomanagement', this.columns)
        .subscribe(data => this.anotherPromise(data), error => this.errorMessage = <any>error);
}

private anotherPromise(data: any[]) {
    this.data = data;
    console.log(this.columns);
    console.log(this.data);
}

private handleError(error: Response) {
    console.error(error);
    return Observable.throw(error.json().error || 'Server error');
}
}

数据已按照上面的代码登录到控制台，但根据我的试用，它无法在HTML中工作.有什么想法吗?

The data is getting logged in to console in the above code but not working in the HTML as per my trial. Any ideas, please?

已更新:只是像这样使用插值，就可以了

Updated: Just used interpolation like this and it worked

{{mydata[column]}}

推荐答案

代替使用

<tr *ngFor="#data of data">

您应该使用

<tr *ngFor="#data of data" *ngModel="data[column]">

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