重置表单后，Angular 4反应式表单未清除验证 [英] Angular 4 reactive form is not clearing the validations after resetting the form

问题描述

我在我的应用程序中将Angular 4.4.6反应形式与Angular Material 2.0.0-beta.12一起使用.这是我的组件，

I am using Angular 4.4.6 reactive form with Angular Material 2.0.0-beta.12 in my application. This is my component,

import { Component, OnInit } from '@angular/core';
import { FormGroup, FormControl, Validators } from '@angular/forms';

@Component({
    selector: 'app-quick-file',
    templateUrl: './quick-file.component.html',
    styleUrls: ['./quick-file.component.css']
})
export class QuickFileComponent implements OnInit {

    quickFileForm: FormGroup;


    constructor() { }

    ngOnInit() {
        this.initQuickFileForm();
    }

    private initQuickFileForm () {
        this.quickFileForm = new FormGroup({
            'fileOpenDate': new FormControl(new Date(), Validators.required),
            'fileSubjectEn': new FormControl(null, Validators.required),
            'categoryId': new FormControl(null, Validators.required),
            'subCategoryId': new FormControl(null),
            'primaryClientId': new FormControl(null, Validators.required),
            'primaryConsultantId': new FormControl(null, Validators.required)
        });
    }

    saveQuickFileForm() {
        console.log(this.quickFileForm);
        this.quickFileForm.reset();
    }

}

这是我的模板，

<div>
    <form [formGroup]="quickFileForm" (ngSubmit)="saveQuickFileForm()">
        <mat-form-field class="common-form-field">
            <input matInput [matDatepicker]="openDatePicker" formControlName="fileOpenDate" placeholder="Choose Date">
            <mat-datepicker-toggle matSuffix [for]="openDatePicker"></mat-datepicker-toggle>
            <mat-datepicker #openDatePicker></mat-datepicker>
        </mat-form-field>

        <mat-form-field class="common-form-field">
            <input type="text" matInput formControlName="fileSubjectEn" placeholder="Subject in English">
        </mat-form-field>

        <mat-form-field class="common-form-field">
            <mat-select formControlName="categoryId" placeholder="Choose category">
                <mat-option value="1">opt 1</mat-option>
                <mat-option value="2">opt 2</mat-option>
                <mat-option value="3">opt 3</mat-option>
            </mat-select>
        </mat-form-field>

        <mat-form-field class="common-form-field">
            <mat-select formControlName="subCategoryId" placeholder="Choose subcategory">
                <mat-option value="1">opt 1</mat-option>
                <mat-option value="2">opt 2</mat-option>
                <mat-option value="3">opt 3</mat-option>
            </mat-select>
        </mat-form-field>

        <mat-form-field class="common-form-field">
            <mat-select formControlName="primaryClientId" placeholder="Choose subcategory">
                <mat-option value="1">opt 1</mat-option>
                <mat-option value="2">opt 2</mat-option>
                <mat-option value="3">opt 3</mat-option>
            </mat-select>
        </mat-form-field>

        <mat-form-field class="common-form-field">
            <mat-select formControlName="primaryConsultantId" placeholder="Choose subcategory">
                <mat-option value="1">opt 1</mat-option>
                <mat-option value="2">opt 2</mat-option>
                <mat-option value="3">opt 3</mat-option>
            </mat-select>
        </mat-form-field>
    </form>
</div>

即使我重置了表单，也仍然显示验证错误.我还尝试了以下方法.

Validation errors are showing even after I reset the form. I also tried the following methods.

this.quickFileForm.clearValidators();
this.quickFileForm.markAsPristine();
this.quickFileForm.markAsPristine();

我的代码和可能的解决方案中可能有什么错误?谢谢.

What could be the error in my code and the possible solution? Thank you.

推荐答案

这似乎是已知的 submit时，noreferrer>错误 .在该问题中提出了一些解决方法，我将使用ngForm指令:

This seems to be a known bug when having a button of type submit. There are some work-arounds presented in that issue, of which I would use the ngForm directive:

<form [formGroup]="quickFileForm" (ngSubmit)="saveQuickFileForm()" #f="ngForm">

TS:

@ViewChild('f') myForm;

saveQuickFileForm() {
  this.myForm.resetForm();
}

这似乎工作正常！ 演示

This seems to work fine! DEMO

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