Nesting ng-bootstrap tabs (Angular 2)

I'm trying to nest a ng-bootstrap tab widget, but the content of the nested tab isn't shown properly. The moment I click on a nested tab, the content itself disappears.

Minimal demo

What am I doing wrong?

This is the view code:

            <ngb-tabset>
              <ngb-tab *ngFor="let tab of tabs">
                <ng-template ngbTabTitle>
                  {{ tab.title }}
                </ng-template>
                <ng-template ngbTabContent>
                  {{ tab.content }}

                  <ngb-tabset>
                    <ngb-tab>
                      <ng-template ngbTabTitle>
                        1
                      </ng-template>
                      <ng-template ngbTabContent>
                        1
                      </ng-template>
                    </ngb-tab>
                    <ngb-tab>
                      <ng-template ngbTabTitle>
                        2
                      </ng-template>
                      <ng-template ngbTabContent>
                        2
                      </ng-template>
                    </ngb-tab>
                    <ngb-tab>
                      <ng-template ngbTabTitle>
                        3
                      </ng-template>
                      <ng-template ngbTabContent>
                        3
                      </ng-template>
                    </ngb-tab>
                  </ngb-tabset>

                </ng-template>
              </ngb-tab>
            </ngb-tabset>

Answers:

Answer

Update

Angular 4.3.6 contains a fix for this issue.

https://github.com/ng-bootstrap/ng-bootstrap/issues/1433#issuecomment-325104017

Previous version

It's a bug.

Possible workaround might be having additional template like:

<ngb-tabset>
  <ngb-tab *ngFor="let tab of tabs">
    <ng-template ngbTabTitle>
      {{ tab.title }}
    </ng-template>
    <ng-template ngbTabContent>
      {{ tab.content }}
      <ng-container *ngTemplateOutlet="innerTabset"></ng-container>
    </ng-template>
  </ngb-tab>
</ngb-tabset>


<ng-template #innerTabset>
  <ngb-tabset>
    <ngb-tab>
      <ng-template ngbTabTitle>
        1
      </ng-template>
      <ng-template ngbTabContent>
        1
      </ng-template>
    </ngb-tab>
    <ngb-tab>
      <ng-template ngbTabTitle>
        2
      </ng-template>
      <ng-template ngbTabContent>
        2
      </ng-template>
    </ngb-tab>
    <ngb-tab>
      <ng-template ngbTabTitle>
        3
      </ng-template>
      <ng-template ngbTabContent>
        3
      </ng-template>
    </ngb-tab>
  </ngb-tabset>
</ng-template>

Plunker Example

And you can generate any number of nested tabs like:

<ng-container *ngTemplateOutlet="innerTabset; context: { $implicit: tabs }"></ng-container>

<ng-template #innerTabset let-tabs>
  <ngb-tabset>
    <ngb-tab *ngFor="let tab of tabs">
      <ng-template ngbTabTitle>
        {{ tab.title }}
      </ng-template>
      <ng-template ngbTabContent>
        {{ tab.content }}
        <ng-template [ngIf]="tab.children">
          <ng-container *ngTemplateOutlet="innerTabset; context: { $implicit: tab.children }"></ng-container>
        </ng-template>
      </ng-template>
    </ngb-tab>
  </ngb-tabset>
</ng-template>

Plunker Example

It works because each of embedded template has its own scope and angular doesn't mix query results

Answer

For people who are facing the same problem. Angular 4.3.6 contains a fix for this issue.

More information here : https://github.com/ng-bootstrap/ng-bootstrap/issues/1433

Tags

Recent Questions

Top Questions

Home Tags Terms of Service Privacy Policy DMCA Contact Us

©2020 All rights reserved.