CODEWITHSUNDEEP
angularsortingmat-table
tom33pr
tom33pr

Reputation: 1023

Angular 6 mat-table won't sort

I have an Angular material table with two fields:

<table mat-table [dataSource]="dataSource" matSort  class="mat-elevation-z8">
   <ng-container matColumnDef="Field1">
      <th mat-header-cell *matHeaderCellDef mat-sort-header>Field1</th>
      <td mat-cell *matCellDef="let element"> {{element.Field1}} </td>
   </ng-container>
   <ng-container matColumnDef="Field2">
      <th mat-header-cell *matHeaderCellDef mat-sort-header>Field2</th>
      <td mat-cell *matCellDef="let element"> {{element.Field2}} </td>
   </ng-container>
   <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
   <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
</table>

I import the following modules:

Material.MatTableModule,
Material.MatSortModule,

Then I declare the sort as follows:

@ViewChild(MatSort) sort: MatSort;

I populate the dataSource from an external API by calling the following method in the constructor:

       populateTable() {
            this.requestHttpService.getStuff()
                .subscribe(data => {
                        this.results = data;
                        this.dataSource = this.results;
                        this.dataSource.sort = this.sort;
                    },
                    ...

As you noticed I'm trying to attach sort after the dataSource is loaded.

I have also tried to attach sort in ngAfterViewInit() and couple of other place but no mater what I do it doesn't work.

Any idea?

Upvotes: 0

Views: 2157

Answers (1)

User3250
User3250

Reputation: 3421

You need to make few changes, move code to ngAfterViewInit since MatSort is not available till ngAfterViewInit and initialize table datasource as below:

this.dataSource = new MatTableDataSource(this.results);

Upvotes: 1

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