Question

我想创建可重复使用的角度材料数据表，该表可被任何组件使用，并且只需要传递所需的列标题和其他表数据。下面是我尝试过的：

我正在关注以下示例：stackblitz

在shared文件夹中创建了src/app文件夹。以及数据表组件也可以重用。

data-table.component.html：

<table mat-table [dataSource]="dataSource" matSort class="mat-elevation-z8">
    <ng-container [matColumnDef]="tableData" *ngFor="let tableData of objectKeys(columnHeader)">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> {{columnHeader[tableData]}} </th>
        <td mat-cell *matCellDef="let element; let i=index;"> {{element[tableData]}}</td>
    </ng-container>

    <tr mat-header-row *matHeaderRowDef="objectKeys(columnHeader)"></tr>
    <tr mat-row *matRowDef="let row; columns: objectKeys(columnHeader);"></tr>
</table>

data-table.component.ts：

import { Component, OnInit, Input, ViewChild } from '@angular/core';
import { MatSort, MatTableDataSource, MatPaginator } from '@angular/material';

@Component({
  selector: 'app-data-table',
  templateUrl: './data-table.component.html',
  styleUrls: ['./data-table.component.scss']
})
export class DataTableComponent implements OnInit {

  @Input() tableData;
  @Input() columnHeader;
  @Input() source;
  objectKeys = Object.keys;
  dataSource;

  @ViewChild(MatSort, { static: false }) sort: MatSort;
  @ViewChild(MatPaginator, { static: false }) paginator: MatPaginator;

  constructor() { }

  ngOnInit() {
    console.log(this.tableData);
    this.dataSource = new MatTableDataSource(this.tableData);
    this.dataSource.sort = this.sort;
  }

  applyFilter(filterValue: string) {
    this.dataSource.filter = filterValue.trim().toLowerCase();
  }
}

现在我在需要的地方使用app-data-table选择器。我要在其中使用个人资料组件。

profile-setup.component.html：

<app-data-table [tableData]="tableData" [columnHeader]="columnHeader"></app-data-table>

profile-setup.component.ts：

import { Component, OnInit, ViewChild, AfterViewInit } from '@angular/core';
import { ProfileSetUp } from 'src/app/_interface/profile-setup.module';

@Component({
  selector: 'app-profile-setup',
  templateUrl: './profile-setup.component.html',
  styleUrls: ['./profile-setup.component.scss']
})


export class ProfileSetupComponent implements OnInit {

  constructor() { }

  ngOnInit() {
  }

  columnHeader = {'profileName': 'Profile Name', 'profileDesc': 'Description', 'adminUser': 'Admin User', 'id': ''};

  tableData: ProfileSetUp[] = [
    {
      id: 1,
      profileName: "Cameron Villams",
      profileDesc: "Face to face contact",
      adminUser: "Iwan Rynders",
      action: ""
    },
    {
      id: 2,
      profileName: "Charl Angle",
      profileDesc: "Face to face contact",
      adminUser: "Unknown",
      action: ""
    },
    {
      id: 3,
      profileName: "Johan Abraham",
      profileDesc: "Face to face contact",
      adminUser: "Unknown",
      action: ""
    },
    {
      id: 4,
      profileName: "Niekie Gadgilly",
      profileDesc: "Face to face contact",
      adminUser: "Unknown",
      action: ""
    },
    {
      id: 5,
      profileName: "Veer S",
      profileDesc: "Face to face contact",
      adminUser: "Unknown",
      action: ""
    }
  ];    
}

profile-setup.module：

export interface ProfileSetUp {
    id: number;
    profileName: string;
    profileDesc: string;
    adminUser: string;
    action: string;
}

我如何有条件地显示数据，例如，某些数据表可能具有“编辑”，“删除”按钮，而有些没有这些按钮。任何帮助将不胜感激。

Answer 1

可以将回调函数传递给表组件。（更新的项目：stackblitz）

DataTableComponent

为按钮添加一个输入并对其进行调用。

  @Input() editButton;

  onEdit(element) {
    this.editButton(element);
  }

data-table.component.html

添加逻辑以添加用于编辑回调连接的按钮。

<div *ngIf="columnHeader[tableData] != 'Edit'">
      <td mat-cell *matCellDef="let element"> {{element[tableData] }}</td>
</div>
<div *ngIf="columnHeader[tableData] == 'Edit'">
  <td mat-cell *matCellDef="let element"> 
      <button mat-button (click)="onEdit(element)">
        edit
      </button> 
  </td>
</div>

EmployeeComponent

添加一个编辑列。

columnHeader = {'studentID': 'ID', 'fname': 'First Name', 'lname': 'Last Name', 'weight': 'Weight', 'symbol': 'Code', 'edit': 'Edit'};

为回调创建方法。

  onEditClick = (element) => this.onEdit(element);

  onEdit(element) {
    console.log(element);
  }

employee.component.html

<app-data-table [tableData]="tableData" [columnHeader]="columnHeader" [editButton]="onEditClick"></app-data-table>

使用角度材料创建通用数据表

1 个答案: