Question

我想知道一种方法来验证相同样式的必需复选框角度材料处理其他控件的验证 - 在表单提交时，控件显示为红色，除非触摸。

我想我可以用ng-style执行此操作但是，我无法想出检查表单是否已提交的方法

以下是HTML的摘录

 <form [formGroup]="frmFinish" name="frmFinish">
        <mat-checkbox required formControlName="check1">Discussed Confidentiality and Information Sharing with Service User</mat-checkbox>
        <mat-checkbox required formControlName="check2">Discussed Disposal and Storage of Injecting Equipment and Substances</mat-checkbox>
        <mat-checkbox required formControlName="check3">Discussed Overdose Risk and Prevention</mat-checkbox>

        <mat-form-field>
            <textarea formControlName="note" [(ngModel)]="stepFive.note" matInput placeholder="Any Additional Notes" matTextareaAutosize matAutosizeMinRows="2" matAutosizeMaxRows="5"></textarea>
            <mat-hint align="end">This will be added to the profiles note's</mat-hint>
        </mat-form-field>

        <mat-card-actions>
            <button mat-raised-button type="button" class="nav-btn pull-right" (click)="fillForm()" style="background: red">Fill Form</button>
            <button mat-raised-button class="nav-btn pull-right" style="margin-left:5px;" (click)="createProfile()" type="submit">Finish</button>
            <button mat-raised-button matStepperPrevious class="nav-btn pull-right">Previous</button>
        </mat-card-actions>
    </form>

这是打字稿：

import { Component } from '@angular/core';
import { FormBuilder, FormGroup, Validators } from '@angular/forms';
import { CreateProfileComponent } from '../create-profile.component';

@Component({
    selector: 'step-five-component',
    templateUrl: './step-five.component.html',
    styleUrls: ['../create-profile.component.css']
})
export class StepFiveComponent {
    frmFinish: FormGroup;

    stepFive = {
        note: null
    };

    constructor(private formBuilder: FormBuilder) {
        this.frmFinish = this.formBuilder.group({});
    }

    ngOnInit() {
        this.frmFinish = this.formBuilder.group({
            note: ['', Validators.required],
            check1: ['', Validators.required],
            check2: ['', Validators.required],
            check3: ['', Validators.required],
        });
    }

    createProfile(){
        if(this.frmFinish.valid){
            console.log('Creating profile..');
        }else{

        }
    }

    fillForm(){
        this.stepFive.note = 'asdasd';
    }

}

Answer 1

“但是，我想不出办法检查表格是否已提交”。您可以在调用createProfile时将字段isSubmitted设置为true？

  createProfile(){
        this.isSubmitted = true;
        if(this.frmFinish.valid){
            console.log('Creating profile..');
        }else{

        }
    }

然后你可以使用ngStyle或ngClass：

[ngClass]="{'has-error': checkForError() }"

Answer 2

此问题已在Angular 2.3.0版中解决。

只需使用：Validators.requiredTrue而不是Validators.required。

（请参见GitHub问题#11459。请参见Angular文档requiredTrue）

角度材料复选框验证

2 个答案: