CODEWITHSUNDEEP
angular5angular-material-5
Tushar
Tushar

Reputation: 2078

How to set default value of mat-select when options are retrieved?

 <mat-form-field [ngClass]="classes">
  <mat-select [placeholder]="placeholder" [(ngModel)]="selectValue" [multiple]="true" #multiSelect (change)="onChange()"
    #itemSelect="ngModel">
    <ngx-mat-select-search [formControl]="multiFilterCtrl"></ngx-mat-select-search>
    <mat-option *ngFor="let option of filteredMulti | async" [value]="option.id">
      {{option.name}}
    </mat-option>
  </mat-select>
</mat-form-field>

Angular material multiselect how to set values to multiselect dropdown comming from api?

Upvotes: 1

Views: 4145

Answers (1)

Esteban Gehring
Esteban Gehring

Reputation: 841

if you are trying to set the selected values, you can

// ...data coming from the api and saved to this.filteredMulti

this.filteredMulti.take(1).subscribe(() => 
    // set your model
    selectValue = apiData.selectValue

    // setting the compareWith property to a comparison function
    // triggers initializing the selection according to the initial value
    // this needs to be done after the filteredMulti are loaded initially
    // and after the mat-option elements are available
    this.multiSelect.compareWith = (a: number, b: number) => a === b;
});

See https://github.com/bithost-gmbh/ngx-mat-select-search/blob/master/src/app/examples/02-multiple-selection-example/multiple-selection-example.component.ts for a full example

Upvotes: 3

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