相关疑难解决方法(0)

我有一个简单的角度材质自动完成功能。现在，我想以编程方式设置此自动完成功能的值/所选选项。这是我的代码：

hardware.component.html

<tr>
    <td class="desc pd7">Firmware</td>
    <td>
        <div class="form-group mb0">
            <mat-form-field class="example-full-width">
                <input type="text" placeholder="Select firmware" aria-label="Number" matInput [formControl]="myControlFirmware" [matAutocomplete]="auto1" (keydown.enter)="$event.preventDefault()">
                <mat-autocomplete #auto1="matAutocomplete" [displayWith]="displayFirmwares">
                    <mat-option *ngFor="let firmware of filteredFirmwares | async" [value]="firmware" (onSelectionChange)="getIdFromFirmware($event, firmware)">
                        {{ firmware.name }}
                    </mat-option>
                </mat-autocomplete>
            </mat-form-field>
        </div>
    </td>
</tr>

hardware.component.ts

this.miscellaneousTerminalService.getMiscellaneous('firmware').subscribe(data => {
    if(data.success) {
        this.availableFirmwares = data.data;
        this.filteredFirmwares = this.myControlFirmware.valueChanges
        .pipe(
            startWith(''),
            map(valFirmware => this.filterFirmwares(valFirmware))
        );
    }
});

filterFirmwares(valFirmware: any): any[] {
    return this.availableFirmwares.filter(firmware => {
        let name = valFirmware.name ? valFirmware.name : …

我在 Mat-Autocomplete 上使用 formControlName 时遇到问题。我不知道为什么，但我的 formControlName 不会发送数据，是我写错了吗？当我尝试从 HTML 中删除 [formControl] 时，它总是无法过滤。

HTML

<form [formGroup]="form" #legalDataFrm="ngForm" autocomplete="off" fxLayout.gt-sm="column" fxFlex="1 1 auto" novalidate>
  <input type="text" placeholder="Pilih Bank" 
    formControlName="bankName" matInput 
    [formControl]="myControl" [matAutocomplete]="auto">
    <mat-autocomplete 
    #auto="matAutocomplete" 
    (optionSelected)='onChangeBank()' 
    [displayWith]="displayFn">
      <mat-option>Pilih Bank</mat-option>
      <mat-option *ngFor="let option of filteredOptions | async" [value]="option">
        {{option.bankName}}
      </mat-option>
    </mat-autocomplete>
</form>

TS _bankService 是我获取银行列表的地方，_validationService 是我获取每个表单名称验证的地方。

export class FpLegalDataFormComponent implements OnInit, OnDestroy {
form: FormGroup;
myControl = new FormControl();
options: User[];
filteredOptions: Observable<User[]>;

constructor(
private activatedRoute: ActivatedRoute,
private formBuilder: FormBuilder,
public _validationsService: ValidationsService,
public _bankService: …