问题描述
在密码和电子邮件的第二个字段中,我想检查第一个字段是否与第二个字段相同。
如果我只检查一个,密码或电子邮件,它可以工作,但对两者都无效...
this.registerForm = this.formBuilder.group({
email: '',[Validators.required,Validators.email],confirmEmail: '',[Validators.required],password: '',confirmPassword: '',},{
validator: matchingFields('password','confirmPassword')
});
如何添加第二个validator
?
this.registerForm = this.formBuilder.group({
email: '','confirmPassword'),// this doesn't work
validator: matchingFields('email','confirmEmail')
});
然后密码和电子邮件的方法(matchingFields
)相同:
function matchingFields(field1,field2) {
return form => {
if (form.controls[field1].value !== form.controls[field2].value) {
return {mismatchedFields: true};
}
};
}
我找不到validator
的任何解决方案,仅是Validators.required
的解决方案,但这不是我的问题。谢谢您的帮助
解决方法
用于生成表单组的语法不正确
正确的语法应该是
this.fb.group({
control: ['value',[Validator1,Validator2,...]]
})
在您的情况下,这看起来像
function confirmed(field: string) {
const confirmField = 'confirm' + field.replace(/(^|\s)\S/g,t => t.toUpperCase() );
return form => {
if (form.get(field).value !== form.get(confirmField).value) {
return { ['mismatched-' + field]: true };
}
};
}
@Component({
selector: "my-app",templateUrl: "./app.component.html",styleUrls: ["./app.component.css"]
})
export class AppComponent {
constructor(private formBuilder: FormBuilder) {}
name = "Angular " + VERSION.major;
registerForm = this.formBuilder.group(
{
email: ["myEmail@yahoo.com",[Validators.required,Validators.email]],confirmEmail: ["myEmail@yahoo.com",[Validators.required]],password: ["Password@1",confirmPassword: ["Password@1",[Validators.required]]
},{
validators: [confirmed("password"),confirmed("email")]
}
);
}
示例HTML
<hello name="{{ name }}"></hello>
<form [formGroup]='registerForm'>
<input formControlName='email'> {{ registerForm.get('email').status}} <br>
<input formControlName='confirmEmail'> {{ registerForm.get('confirmEmail').status}} <br>
<input formControlName='password'> {{ registerForm.get('password').status}}<br>
<input formControlName='confirmPassword'> {{ registerForm.get('confirmPassword').status}}<br>
</form>
Password Confirmed Error: <strong>{{ registerForm.getError('mismatched-password')}}</strong> <br>
Email Confirmed: <strong>{{ registerForm.getError('mismatched-email')}}</strong>
<h1>{{ registerForm.status }}</h1>