name.replace 不是具有动态列的 mat table 中的函数
name.replace is not a function in mat table with dynamic columns
我需要使用带动态列的垫子 table,但出现此错误:
> ERROR TypeError: name.replace is not a function
> at MatColumnDef.set name [as name] (table.js:175)
> at updateProp (core.js:32189)
> at checkAndUpdateDirectiveInline (core.js:31867)
> at checkAndUpdateNodeInline (core.js:44367)
> at checkAndUpdateNode (core.js:44306)
> at debugCheckAndUpdateNode (core.js:45328)
> at debugCheckDirectivesFn (core.js:45271)
> at Object.eval [as updateDirectives] (TableComponent.html:3)
> at Object.debugUpdateDirectives [as updateDirectives] (core.js:45259)
> at checkAndUpdateView (core.js:44271)
在我的 ts 中我声明:
tableConfigurations = {
dataSource: [],
columns: [{
name: 'first'
},
{
name: 'second'
},
{
name: 'third'
},
{
name: 'fourth'
},
{
name: 'fifth'
}]
}
在 html 我有:
<table mat-table [dataSource]="tableConfigurations.dataSource" class="mat-elevation-z8">
<ng-container [matColumnDef]="column" *ngFor="let column of tableConfigurations.columns">
<ng-container>
<th mat-header-cell *matHeaderCellDef> {{column.name}} </th>
<td mat-cell *matCellDef="let element"> {{element[column]}} </td>
</ng-container>
</ng-container>
<tr mat-header-row *matHeaderRowDef="tableConfigurations.columns"></tr>
<tr mat-row *matRowDef="let row; columns: tableConfigurations.columns;"></tr>
</table>
This is the stackblitz 与我当前的代码。正如您在控制台中所看到的,存在相同的错误。我不明白我错过了什么。
问题出在
columns: [{ name: 'first' }, {name: 'second'}, ... ]
您可以采用两种方法:
列数组将变为字符串数组,如:
columns: ['first', 'second', ... ]
Angular material table 显示列必须是字符串数组才能解析列。
- 添加一个变量,用于将列数组转换为字符串数组,以便正确显示
displayedColumns: any[] = this.tableConfigurations.columns.map(col => col.name);
最后:
你的 html 会像:
<table mat-table [dataSource]="tableConfigurations.dataSource" class="mat-elevation-z8">
<ng-container [matColumnDef]="column.name" *ngFor="let column of tableConfigurations.columns;">
<th mat-header-cell *matHeaderCellDef> {{column.name}}</th>
<td mat-cell *matCellDef="let element"> {{element[column.name]}}</td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns"></tr>
</table>
我需要使用带动态列的垫子 table,但出现此错误:
> ERROR TypeError: name.replace is not a function
> at MatColumnDef.set name [as name] (table.js:175)
> at updateProp (core.js:32189)
> at checkAndUpdateDirectiveInline (core.js:31867)
> at checkAndUpdateNodeInline (core.js:44367)
> at checkAndUpdateNode (core.js:44306)
> at debugCheckAndUpdateNode (core.js:45328)
> at debugCheckDirectivesFn (core.js:45271)
> at Object.eval [as updateDirectives] (TableComponent.html:3)
> at Object.debugUpdateDirectives [as updateDirectives] (core.js:45259)
> at checkAndUpdateView (core.js:44271)
在我的 ts 中我声明:
tableConfigurations = {
dataSource: [],
columns: [{
name: 'first'
},
{
name: 'second'
},
{
name: 'third'
},
{
name: 'fourth'
},
{
name: 'fifth'
}]
}
在 html 我有:
<table mat-table [dataSource]="tableConfigurations.dataSource" class="mat-elevation-z8">
<ng-container [matColumnDef]="column" *ngFor="let column of tableConfigurations.columns">
<ng-container>
<th mat-header-cell *matHeaderCellDef> {{column.name}} </th>
<td mat-cell *matCellDef="let element"> {{element[column]}} </td>
</ng-container>
</ng-container>
<tr mat-header-row *matHeaderRowDef="tableConfigurations.columns"></tr>
<tr mat-row *matRowDef="let row; columns: tableConfigurations.columns;"></tr>
</table>
This is the stackblitz 与我当前的代码。正如您在控制台中所看到的,存在相同的错误。我不明白我错过了什么。
问题出在
columns: [{ name: 'first' }, {name: 'second'}, ... ]
您可以采用两种方法:
列数组将变为字符串数组,如:
columns: ['first', 'second', ... ]
Angular material table 显示列必须是字符串数组才能解析列。
- 添加一个变量,用于将列数组转换为字符串数组,以便正确显示
displayedColumns: any[] = this.tableConfigurations.columns.map(col => col.name);
最后:
你的 html 会像:
<table mat-table [dataSource]="tableConfigurations.dataSource" class="mat-elevation-z8">
<ng-container [matColumnDef]="column.name" *ngFor="let column of tableConfigurations.columns;">
<th mat-header-cell *matHeaderCellDef> {{column.name}}</th>
<td mat-cell *matCellDef="let element"> {{element[column.name]}}</td>
</ng-container>
<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
<tr mat-row *matRowDef="let row; columns: displayedColumns"></tr>
</table>