【发布时间】:2019-05-12 08:22:06
【问题描述】:
我有一个组件用于显示来自 api 的一些数据(即名字、姓氏、电话...等)。为了执行 CRUD 操作,特地 update 操作,。
如下图:
我遇到了一个问题,当我点击 SAVE 按钮时,即使是 输入字段(即电话) 中存在的数据也是如此。它仍在显示警告消息(即 mat-error)。如下图:
下面是我的组件代码
HTML
<form [formGroup]="editForm">
<div>
<mat-form-field>
<input matInput placeholder="First Name" formControlName="firstname" required>
<mat-error *ngIf="editForm.controls.firstname.hasError('required')">
Please enter first name
</mat-error>
</mat-form-field>
</div>
<div>
<mat-form-field class="example-full-width">
<input matInput placeholder="Last Name" formControlName="lastname" required>
<mat-error *ngIf="editForm.controls.lastname.hasError('required')">
Please enter last name
</mat-error>
</mat-form-field>
</div>
<div>
<mat-form-field class="phone-number">
<input matInput placeholder="Phone Number" formControlName="phonenumber" required>
<mat-error *ngIf="editForm.controls.phonenumber.hasError('required')">
Please enter phone number
</mat-error>
<mat-error *ngIf="editForm.controls.phonenumber.hasError('pattern')">
Please enter a valid phone number
</mat-error>
</mat-form-field>
</div>
<div class="btn-sec">
<button mat-flat-button type="button" >Cancel</button>
<button mat-flat-button type="submit" (click)="onEditForm()">Save</button>
</div>
<form>
TS
import{ Component, Inject, Input, OnInit, ViewChild } from '@angular/core';
import{ FormBuilder, FormControl ,FormGroup, Validators}fro'@angular/forms';
import {MAT_DIALOG_DATA, MatDialog, MatDialogRef} from '@angular/material';
import {IContact } from 'src/app/models/app.models';
@Component({
selector: 'wsd-update-customer',
templateUrl: './wsd-customer.component.html',
styleUrls: ['./wsd-customer.component.css'],
})
export class EditCustomerComponent implements OnInit {
public editForm: FormGroup;
constructor(@Inject(MAT_DIALOG_DATA) public data: IContact,
private fb: FormBuilder,
public dialog: MatDialog) {}
public ngOnInit(): void {
this.editForm = this.fb.group({
firstname: [ null, [Validators.required],
lastname: [null, [Validators.required],
phonenumber: [null, [Validators.required, Validators.pattern('[0-9]+')]],
});
this.editForm.get('firstname').setValue(this.data.firstName);
this.editForm.get('lastname').setValue(this.data.lastName);
this.editForm.get('phonenumber').setValue(this.data.phoneNumbers[0].number);
}
public onEditForm(): void {
this.markAsDirty(this.editForm);
}
private markAsDirty(group: FormGroup): void {
group.markAsDirty();
for (const i in group.controls) {
group.controls[i].markAsDirty();
}
}
}
models.ts 文件
export interface IContact {
firstName: string;
lastName: string;
phoneNumbers: IPhoneNumber[];
}
export interface IPhoneNumber {
type: string;
number: string;
}
JSON
{
"firstName": "Adaline",
"lastName": "Danat",
"phoneNumbers": [
{
"type": "Home",
"number": "+62 342 886 8201"
},
{
"type": "Business",
"number": "+63 704 441 1937"
},
{
"type": "Unknown",
"number": "+63 530 693 2767"
}
],
}
更新照片
【问题讨论】:
-
因为它是
editable form,并且如果用户将任何输入字段设为空( say first name)。然后它应该显示输入字段(i,e first name )为空的警告消息。 -
但
firstname和lastname也是必填字段,它们不会抛出错误。 -
@Shankarguru 在创建客户时是否应用了相同的手机验证验证?
-
是的,此验证适用。
-
@Shankarguru 看看:stackblitz.com/edit/angular-q69nxd
标签: angular typescript angular-material angular6 angular-forms