我们如何在 Angular 中一个接一个地显示表单错误验证

Question

我是 angular 的新手，我已经创建了一个自定义 EmailDomainError 验证器 class 并且工作正常。

但问题是电子邮件域错误与电子邮件验证错误消息一起显示我该如何解决这个问题我真的很困惑有人可以帮助我吗

我想我必须在我的 EmailDomainError 中检查电子邮件模式是否正确 class 我怎么能检查它？如果我认为正确的方法和我的完整代码---https://stackblitz.com/edit/angular-bvihqj

ngOnInit

 ngOnInit() {

    this.employeeForm = this.fb.group({
      fullName: ['', [Validators.required, Validators.minLength(2), Validators.maxLength(10)]],
      contactPreference: ['email'],
      email: ['', [Validators.required, Validators.email, emailDomainError]],
      phone: [''],
      skills: this.fb.group({
        skillName: ['', [Validators.required]],
        experienceInYears: ['', [Validators.required]],
        proficiency: ['', [Validators.required]]
      })
    });

此对象包含此表单的所有验证消息

 formErrors = {
    'fullName': '',
    'email': '',
    'phone': '',
    'skillName': '',
    'experienceInYears': '',
    'proficiency': ''
  };


     validationMessages = {
        'fullName': {
          'required': 'Full Name is required.',
          'minlength': 'Full Name must be greater than 2 characters.',
          'maxlength': 'Full Name must be less than 10 characters.'
        },
        'email': {
          'required': 'Email is required.',
          'email': 'Valid Email id is required.',
          'emailDomainError': 'Email domain should be karvy.com'
        },
        'phone': {
          'required': 'Phone number is required.'
        },
        'skillName': {
          'required': 'Skill Name is required.',
        },
        'experienceInYears': {
          'required': 'Experience is required.',
        },
        'proficiency': {
          'required': 'Proficiency is required.',
        },
      };

emailDomainError

function emailDomainError(control: AbstractControl): { [key: string]: any } | null {
  const email: string = control.value;
  const domain: string = email.substring(email.lastIndexOf("@") + 1);
  if (email === '' || domain === "karvy.com") {
    return null;
  } else {
    return { "emailDomainError": true };
  }
}

Answer 1

嗨 AbhiRam 我在这里更新你的代码是 link for Here

在表格组中更新这个像

email: ['', [Validators.required, emailError, emailDomainError]],

函数代码改成这样 *

*
 * emailDomainValidations
 * @param control 
 */

function emailDomainError(control: AbstractControl): { [key: string]: any } | null {
  const email: string = control.value;
  if (email && email.indexOf("@") != -1) {
    let [_, domain] = email.split("@");
    if (domain !== "karvy.com") {
      return {
        "emailDomainError": true,
       // "email": false
      };
    }

    else {
      return null;
    }
  }
}
function emailError(control: AbstractControl): { [key: string]: any } | null {
  const email: string = control.value;

  if( email.length <3 && email.length >=1){
    return { "email" : true}
  }
  else{
    return null;
  }

}

我们如何在 Angular 中一个接一个地显示表单错误验证

How can we show form error validations one after one in Angular

angular

angular2-form-validation

ngOnInit

此对象包含此表单的所有验证消息

emailDomainError