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我创建了一个像这样的表单构建器https://stackblitz.com/edit/angular-dynamic-survey-creation-golkhg?file=src%2Fapp%2Fcreate-survey%2Fcreate-survey.component.html我确实这样做但是我不使用材料设计，这部分不起作用

<div *ngIf="questionCtrl.controls.questionGroup.controls.options">
                          <ul class="question-type" formArrayName="options">
                            <li
                              *ngFor="let optionCtrl of questionCtrl.controls.questionGroup.controls.options.controls let j = index">
                              <div [formGroupName]="j">
                                <mat-form-field>
                                  <input formControlName="optionText" matInput placeholder="option text" maxlength="100"
                              [required]="true">
                          </mat-form-field>
                                  <button mat-raised-button *ngIf="j>=2" (click)="removeOption(i,j)" color="warn">
                             X
                            </button>
                              </div>
                            </li>
                          </ul>
                          <button mat-raised-button type="button" (click)="addOption(i)" class="mat-sm-button add-option-btn" color="accent"> Add option</button>
                        </div>
                        <div
                          *ngIf="questionCtrl.controls.questionGroup.controls.showRemarksBox">
                          <mat-slide-toggle formControlName="showRemarksBox">
                            Show Remarks Textarea
                          </mat-slide-toggle>
                          <mat-form-field class="full-width">
                            <textarea  style="resize: none;" disabled  matInput placeholder="Textarea"></textarea>
                          </mat-form-field>
                        </div>

我的代码是这样的

<div *ngSwitchCase="'Kotak Centang'">
                                            <div *ngIf="questionCtrl.controls.questionGroup.controls.options">
                                                <ul formArrayName="options  ">
                                                    <li
                                                        *ngFor="let optionCtrl of questionCtrl.controls.questionGroup.controls.options let j = index">
                                                        <div [formGroupName]="j">
                                                            <input formControlName="optionText" matInput
                                                                placeholder="option text" maxlength="100"
                                                                [required]="true">
                                                            <button *ngIf="j>=2" (click)="removeOption(i,j)"
                                                                color="warn">X
                                                            </button>
                                                        </div>
                                                    </li>
                                                </ul>
                                                <button nbButton type="button" (click)="addOption(i)"
                                                    class="mat-sm-button add-option-btn" color="accent"> Add
                                                    option</button>
                                            </div>
                                        </div>
4

1 回答 1

0

事实证明，在 ng switch 中使用的值不能正常工作，我在选择 ngswitch 时使用 [(value)] 而不是 [(selected)] 解决了这个问题

于 2020-04-11T13:26:16.890 回答