如何从 html 中的自定义验证器获取错误?
How to get error from custom validator in html?
我在ts中有这样的表格:
this._logInForm = _formBuilder.group<ILoginModel>({
userName: ['', {
validators: [Validators.required, Validators.maxLength(10)],
updateOn: 'blur'
}],
password: ['', {
validators: [PASSWORD_VALIDATOR(/^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{5,}$/)],
updateOn: 'blur'
}
]
});
验证码:
function PASSWORD_VALIDATOR(correctPattern: RegExp): ValidatorFn {
return ((control: AbstractControl): { incorrectPassword: RegExp } | null => {
if (!correctPattern.test(control.value)) {
return { incorrectPassword: correctPattern };
}
return null;
});
}
HTML:
<p class="login__validation-error" *ngIf="passwordControl.errors!.incorrectPassword && passwordControl.touched">Password must be longer than 5 symbols and must contain 1 digit, 1 lowercase and 1 uppercase letter</p>
所以,它给了我一个编译错误:“属性 'incorrectPassword' 在类型 'ValidatorsModel' 上不存在。”
我明白了,但是我怎样才能解决 html 中的这个错误?除了为自定义验证器编写特定指令并使用它之外,是否有任何变体?
TS代码
function PASSWORD_VALIDATOR(correctPattern: RegExp): ValidatorFn {
return (control: FormControl) => {
let urlRegEx: RegExp = new RegExp('/^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{5,}$/');
if (control.value && !control.value.match(urlRegEx)) {
return {
pattern: 'Password must be longer than 5 symbols and must contain 1 digit, 1 lowercase and 1 uppercase letter'
};
} else {
return null;
}
}
};
Html代码
<p class="login__validation-error" *ngIf="_logInForm .controls['password'].errors.pattern">Password must be longer than 5 symbols and must contain 1 digit, 1 lowercase and 1 uppercase letter</p>
表单更改:
password: ['', PASSWORD_VALIDATOR('password')], // password means formControlName
我在ts中有这样的表格:
this._logInForm = _formBuilder.group<ILoginModel>({
userName: ['', {
validators: [Validators.required, Validators.maxLength(10)],
updateOn: 'blur'
}],
password: ['', {
validators: [PASSWORD_VALIDATOR(/^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{5,}$/)],
updateOn: 'blur'
}
]
});
验证码:
function PASSWORD_VALIDATOR(correctPattern: RegExp): ValidatorFn {
return ((control: AbstractControl): { incorrectPassword: RegExp } | null => {
if (!correctPattern.test(control.value)) {
return { incorrectPassword: correctPattern };
}
return null;
});
}
HTML:
<p class="login__validation-error" *ngIf="passwordControl.errors!.incorrectPassword && passwordControl.touched">Password must be longer than 5 symbols and must contain 1 digit, 1 lowercase and 1 uppercase letter</p>
所以,它给了我一个编译错误:“属性 'incorrectPassword' 在类型 'ValidatorsModel' 上不存在。”
我明白了,但是我怎样才能解决 html 中的这个错误?除了为自定义验证器编写特定指令并使用它之外,是否有任何变体?
TS代码
function PASSWORD_VALIDATOR(correctPattern: RegExp): ValidatorFn {
return (control: FormControl) => {
let urlRegEx: RegExp = new RegExp('/^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d]{5,}$/');
if (control.value && !control.value.match(urlRegEx)) {
return {
pattern: 'Password must be longer than 5 symbols and must contain 1 digit, 1 lowercase and 1 uppercase letter'
};
} else {
return null;
}
}
};
Html代码
<p class="login__validation-error" *ngIf="_logInForm .controls['password'].errors.pattern">Password must be longer than 5 symbols and must contain 1 digit, 1 lowercase and 1 uppercase letter</p>
表单更改:
password: ['', PASSWORD_VALIDATOR('password')], // password means formControlName