[英]Angular 8 Mat-Autocomplete inside ngFor just showing on the last item
代碼:
<div formArrayName="assignments" *ngFor="let item of myForm.get('assignments')['controls']; let i = index;"> <ng-container [formGroupName]="i"> <div fxLayout="row" fxLayout.lt-md="column" fxLayoutGap="10px"> <mat-form-field fxFlex="30"> <mat-label>{{ 'product.providers.txt.provider' | translate}}</mat-label> <input type="text" matInput formControlName="id_provider"[matAutocomplete]="providers"> <mat-autocomplete #providers="matAutocomplete" [displayWith]="displayPv"> <mat-option *ngFor="let option of filteredOptions[i] | async" [value]="option.id"> {{option.provider_business_name}} </mat-option> </mat-autocomplete> </mat-form-field> </div> </ng-container> </div>
這是一個例子:
因為我從 API 接收數據,所以我沒有在每個循環上添加控制,這就是我解決它的方法!
setExistingAssignments(assignmentsSet) {
const control = this.myForm.get('assignments') as FormArray;
assignmentsSet.forEach(s => {
control.push(this.fb.group({
// Some assignaments
}));
this.ManageNameControl(control.length - 1); // This is the function
});
this.available = true;
return control;
}
// The function
ManageNameControl(index: number) {
const arrayControl = this.myForm.get('assignments') as FormArray;
if (arrayControl.length > 0) {
this.filteredOptions[index] = arrayControl.at(index).get('id_provider').valueChanges
.pipe(
startWith<string>(''),
map(value => typeof value === 'string' ? value : value['id_provider']),
map(name => name ? this._filter(name, 'provider') : this.options.slice())
);
}
}
所以之前的 function 在循環之外! 現在它在里面,所以每個 position 它將添加一個控件並搜索該行!
非常感謝!
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.