我需要在我的行Datatable中显示页脚元素,只是如果我在一个特定的列中,我知道在一般情况下如何做,但在这里我使用编程行def(我应该使用它进行分组
所以我试过那个代码。
Template:
<mat-table [dataSource]="dataSource" class="mat-elevation-z8">
<ng-container *ngFor="let column of columns; let i = index" matColumnDef="{{ column.field }}">
<mat-header-cell *matHeaderCellDef (click)="SortWith($event,column)">{{ column.field }}
</mat-header-cell>
<mat-cell *matCellDef="let row">
<div >
{{ row[column.field] }}
</div>
</mat-cell>
<mat-footer-cell *matFooterCellDef *ngIf="column.field == Category"> <b><font color=red>Total: </font></b></mat-footer-cell> // I need to dispaly this just in column of category
</ng-container>
<mat-header-row mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns;" [className]="row.RemainingQuantities == 0 ? 'red' : 'redBack'"></mat-row>
<mat-row *matFooterRowDef="displayedColumns; sticky: true"></mat-row>
<!-- Group header -->
<ng-container matColumnDef="groupHeader">
<mat-cell colspan="999" *matCellDef="let group">
<mat-icon *ngIf="group.expanded">expand_less</mat-icon>
<mat-icon *ngIf="!group.expanded">expand_more</mat-icon>
<strong>{{groupByColumns[group.level-1]}} = {{group[groupByColumns[group.level-1]]}} ({{group.totalCounts}})</strong>
</mat-cell>
</ng-container>
My component. ts:
this.columns = [{
field: 'Category'
}, {
field: 'Model'
}, {
field: 'Reference'
}, {
field: 'Name'
}, {
field: 'RemainingQuantities'
}, {
field: 'Department.Name'
}, {
field: 'Supplier.Name'
}];
this.displayedColumns = this.columns.map(column => column.field);
this.groupByColumns = ['Category'];
columnsToDisplay: string[] = ['Category', 'Model', 'Reference', 'Name', 'RemainingQuantities', 'Department.Name', 'Supplier.Name'];
SortedColumns: string[] = [];
this.service.get_product().subscribe((result : any)=>{
this.listdata = result;
this.decompersed = decrypt(result);
console.log(this.decompersed);
this.ProductList = this.decompersed;
this.dataSource.data = this.addGroups(this.ProductList, this.groupByColumns);
this.dataSource.filterPredicate = this.customFilterPredicate.bind(this);
this.dataSource.filter = performance.now().toString();
但是我发现了一个错误:
未捕获错误: 模板解析错误。不能在一个元素上有多个模板绑定。只能使用一个以*为前缀的属性(" ]*ngIf="column.field == Category"> Total: ")。
当我删除NgIf时,我发现了这个结果。
只是我需要第一个总标签
解决方法是使用 [className]="column.field == 'Category' ? 'nothing' : 'hidetool'"
而hidetool类中包含了hide att。