物料设计表不接受dataSource对象 [英] Material Design Table is not accepting dataSource object

问题描述

我遇到以下错误:

compiler.js:486未捕获的错误:模板解析错误: 无法绑定到数据源"，因为它不是表"的已知属性.

compiler.js:486 Uncaught Error: Template parse errors: Can't bind to 'dataSource' since it isn't a known property of 'table'.

我正在将表格插入自定义材料模态组件，该组件应显示历史记录条目列表.

I am inserting a table into a custom material modal component which should show a list of history entries.

HistoryComponent:

HistoryComponent:

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

@Component({
  selector: "app-history",
  templateUrl: "./history.component.html",
  styleUrls: ["./history.component.scss"],
})
export class HistoryComponent implements OnInit {
  displayedColumns = ["position", "name", "weight", "symbol"];
  dataSource = ELEMENT_DATA;

  constructor() { }

  ngOnInit() {
  }

}

export interface Element {
  name: string;
  position: number;
  weight: number;
  symbol: string;
}
const ELEMENT_DATA: Element[] = [
  {position: 1, name: "Hydrogen", weight: 1.0079, symbol: "H"},
  {position: 2, name: "Helium", weight: 4.0026, symbol: "He"},
  {position: 3, name: "Lithium", weight: 6.941, symbol: "Li"},
  {position: 4, name: "Beryllium", weight: 9.0122, symbol: "Be"},
  {position: 5, name: "Boron", weight: 10.811, symbol: "B"},
  {position: 6, name: "Carbon", weight: 12.0107, symbol: "C"},
  {position: 7, name: "Nitrogen", weight: 14.0067, symbol: "N"},
  {position: 8, name: "Oxygen", weight: 15.9994, symbol: "O"},
  {position: 9, name: "Fluorine", weight: 18.9984, symbol: "F"},
  {position: 10, name: "Neon", weight: 20.1797, symbol: "Ne"},
  {position: 11, name: "Sodium", weight: 22.9897, symbol: "Na"},
  {position: 12, name: "Magnesium", weight: 24.305, symbol: "Mg"},
  {position: 13, name: "Aluminum", weight: 26.9815, symbol: "Al"},
  {position: 14, name: "Silicon", weight: 28.0855, symbol: "Si"},
  {position: 15, name: "Phosphorus", weight: 30.9738, symbol: "P"},
  {position: 16, name: "Sulfur", weight: 32.065, symbol: "S"},
  {position: 17, name: "Chlorine", weight: 35.453, symbol: "Cl"},
  {position: 18, name: "Argon", weight: 39.948, symbol: "Ar"},
  {position: 19, name: "Potassium", weight: 39.0983, symbol: "K"},
  {position: 20, name: "Calcium", weight: 40.078, symbol: "Ca"},
];

<h2 mat-dialog-title>History</h2>
<mat-dialog-content>
  <div class="example-container mat-elevation-z8">
    <table mat-table #table [dataSource]="dataSource" matSort>

      <!-- Position Column -->
      <ng-container matColumnDef="position">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> No. </th>
        <td mat-cell *matCellDef="let element"> {{element.position}} </td>
      </ng-container>

      <!-- Name Column -->
      <ng-container matColumnDef="name">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> Name </th>
        <td mat-cell *matCellDef="let element"> {{element.name}} </td>
      </ng-container>

      <!-- Weight Column -->
      <ng-container matColumnDef="weight">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> Weight </th>
        <td mat-cell *matCellDef="let element"> {{element.weight}} </td>
      </ng-container>

      <!-- Symbol Column -->
      <ng-container matColumnDef="symbol">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> Symbol </th>
        <td mat-cell *matCellDef="let element"> {{element.symbol}} </td>
      </ng-container>

      <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
      <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
    </table>
  </div>
</mat-dialog-content>
<mat-dialog-actions>
  <button mat-button [mat-dialog-close]="true">OK</button>
</mat-dialog-actions>

我将MatTableModule导入到另一个材料模块中，仅用于材料设计组件.一切正常.

I imported the MatTableModule in a different material module, just for the material design components. This is working fine.

我在这里想念什么?

更新:使用下面的Kim Kern的答案，我可以再次编译并且没有错误，但是没有使用我的dataSource对象，并且该表为空.

Update: With the answer from Kim Kern below I can compile again and get no errors, but my dataSource object is not being used and the table is empty.

推荐答案

选择器table[mat-table]仅由

The selector table[mat-table] was only just added by this commit. This is only available in version 6 of @angular/material. If you're still on version 5, you have to use the tag mat-table instead of table with the directive mat-table:

<table mat-table #table [dataSource]="dataSource" matSort>

成为

<mat-table #table [dataSource]="dataSource" matSort>

这篇关于物料设计表不接受dataSource对象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！