检查由 *ngFor 生成的字段是否有效并带有 required 标志
Check if fields generated by *ngFor are valid with required flag
我有一些输入字段的 *ngFor,
<ng-container *ngFor="let qp of myQuoted.quoteQuantityPrice; let index = i;">
<td>
<input #ng_price[i]="ngModel" class="number" type="number" pattern="[1-9]*" [(ngModel)]="qp.price" required>
</td>
</ng-container>
如果任何#ng_price 字段不遵循正则表达式模式且其中没有任何数据,我希望禁用此按钮
对于只有一个输入字段的对象,我禁用了这样的按钮:
<button [disabled]= "ng_supplier.invalid || ng_inventory.invalid || ng_leadWeeks.invalid || ng_multOrderQty.invalid || ng_minOrderQty.invalid" (click)="Save()">Save</button>
我想将 ng_price.invalid
添加到该验证器列表
我尝试在禁用块中添加 ng_price.invalid
,但正如我所料,它并没有真正像那样工作并且构建项目最终失败,因为 ng_price.invalid
不存在。
试试这个
html
<ng-container *ngFor="let qp of myQuoted.quoteQuantityPrice; let index = i;">
<td>
<form [formGroup]="formArr[i]">
<input formControlName="app_price" class="number" type="number">
</form>
</td>
</ng-container>
...
<button [disabled]= "(formArr[i].get('app_price').touched && formArr[i].get('app_price').invalid) || ng_supplier.invalid || ng_inventory.invalid || ng_leadWeeks.invalid || ng_multOrderQty.invalid || ng_minOrderQty.invalid" (click)="Save()">Save</button>
ts
formArr: any[] = [];
pricePattern: any = "[1-9]*" ;
...
constructor(
private fb: FormBuilder,
) {
for (let j of this.myQuoted.quoteQuantityPrice) {
this.formArr.push(
this.fb.group({
app_price: ["", [Validators.required, Validators.pattern(this.pricePattern)]],
})
);
}
}
...
我有一些输入字段的 *ngFor,
<ng-container *ngFor="let qp of myQuoted.quoteQuantityPrice; let index = i;">
<td>
<input #ng_price[i]="ngModel" class="number" type="number" pattern="[1-9]*" [(ngModel)]="qp.price" required>
</td>
</ng-container>
如果任何#ng_price 字段不遵循正则表达式模式且其中没有任何数据,我希望禁用此按钮
对于只有一个输入字段的对象,我禁用了这样的按钮:
<button [disabled]= "ng_supplier.invalid || ng_inventory.invalid || ng_leadWeeks.invalid || ng_multOrderQty.invalid || ng_minOrderQty.invalid" (click)="Save()">Save</button>
我想将 ng_price.invalid
添加到该验证器列表
我尝试在禁用块中添加 ng_price.invalid
,但正如我所料,它并没有真正像那样工作并且构建项目最终失败,因为 ng_price.invalid
不存在。
试试这个
html
<ng-container *ngFor="let qp of myQuoted.quoteQuantityPrice; let index = i;">
<td>
<form [formGroup]="formArr[i]">
<input formControlName="app_price" class="number" type="number">
</form>
</td>
</ng-container>
...
<button [disabled]= "(formArr[i].get('app_price').touched && formArr[i].get('app_price').invalid) || ng_supplier.invalid || ng_inventory.invalid || ng_leadWeeks.invalid || ng_multOrderQty.invalid || ng_minOrderQty.invalid" (click)="Save()">Save</button>
ts
formArr: any[] = [];
pricePattern: any = "[1-9]*" ;
...
constructor(
private fb: FormBuilder,
) {
for (let j of this.myQuoted.quoteQuantityPrice) {
this.formArr.push(
this.fb.group({
app_price: ["", [Validators.required, Validators.pattern(this.pricePattern)]],
})
);
}
}
...