Accordion Inside Accordion twitter bootstrap?

Question

I'm trying to implement an accordion inside another accordion using Twitter Bootstrap. Is it possible? if so, then please help me with the code because i tried implementing it but I wasn't successful.

Answer 1

I found that solution from Alessandro is not working with Bootstrap 3. Here is a working one (slightly different, with no default expanded panel. If you need any, just add "in" class):

<div class="panel-group" id="accordion1">
  <div class="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title"><a class="panel-toggle" data-toggle="collapse" data-parent="#accordion1" href="#collapseOne">
      Collapsible Group #1
      </a></h4>
    </div>
    <div id="collapseOne" class="panel-body collapse">
      <div class="panel-inner">
        This is a simple accordion inner content...
      </div>
    </div>
  </div>
  <div class="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title"><a class="panel-toggle" data-toggle="collapse" data-parent="#accordion1" href="#collapseTwo">
        Collapsible Group #2 (With nested accordion inside)
      </a></h4>
    </div>
    <div id="collapseTwo" class="panel-body collapse">
      <div class="panel-inner">

        <!-- Here we insert another nested accordion -->

        <div class="panel-group" id="accordion2">
          <div class="panel panel-default">
            <div class="panel-heading">
              <h4 class="panel-title"><a class="panel-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseInnerOne">
                Collapsible Inner Group Item #1
              </a></h4>
            </div>
            <div id="collapseInnerOne" class="panel-body collapse">
              <div class="panel-inner">
                Anim pariatur cliche...
              </div>
            </div>
          </div>
          <div class="panel panel-default">
            <div class="panel-heading">
              <h4 class="panel-title"><a class="panel-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseInnerTwo">
                Collapsible Inner Group Item #2
              </a></h4>
            </div>
            <div id="collapseInnerTwo" class="panel-body collapse">
              <div class="panel-inner">
                Anim pariatur cliche...
              </div>
            </div>
          </div>
        </div>

        <!-- Inner accordion ends here -->

      </div>
    </div>
  </div>
</div>

Answer 2

Simply include another accordion inside the div with the class accordion-inner:

<div class="accordion" id="accordion1">
  <div class="accordion-group">
    <div class="accordion-heading">
      <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion1" href="#collapseOne">
      Collapsible Group #1
      </a>
    </div>
    <div id="collapseOne" class="accordion-body collapse in">
      <div class="accordion-inner">
        This is a simple accordion inner content...
      </div>
    </div>
  </div>
  <div class="accordion-group">
    <div class="accordion-heading">
      <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion1" href="#collapseTwo">
        Collapsible Group #2 (With nested accordion inside)
      </a>
    </div>
    <div id="collapseTwo" class="accordion-body collapse">
      <div class="accordion-inner">

        <!-- Here we insert another nested accordion -->

        <div class="accordion" id="accordion2">
          <div class="accordion-group">
            <div class="accordion-heading">
              <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseInnerOne">
                Collapsible Inner Group Item #1
              </a>
            </div>
            <div id="collapseInnerOne" class="accordion-body collapse in">
              <div class="accordion-inner">
                Anim pariatur cliche...
              </div>
            </div>
          </div>
          <div class="accordion-group">
            <div class="accordion-heading">
              <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseInnerTwo">
                Collapsible Inner Group Item #2
              </a>
            </div>
            <div id="collapseInnerTwo" class="accordion-body collapse">
              <div class="accordion-inner">
                Anim pariatur cliche...
              </div>
            </div>
          </div>
        </div>          

        <!-- Inner accordion ends here -->

      </div>
    </div>
  </div>
</div>

Remember to use different accordion ids.

Answer 3

If you use collapse events on nested collapsible elements it helps stopping collapse events from bubbling up above panel-group level. Otherwise collapse events fired by inner collapsible elements will reach to outer elements trying to handle collapse events fired by their own collapsible elements, and cause unexpected behavior.

$('.panel-group').on('show.bs.collapse shown.bs.collapse hide.bs.collapse hidden.bs.collapse', function (e) {
  e.stopPropagation();
});

This example presumes that you use "panel-group" as class name to group collapsible elements.

Answer 4

this is working more fluidly in Bootstrap v3.2.0

        <div class="panel-group" id="accordion1">
          <div class="panel panel-default">
            <div class="panel-heading">
              <h4 class="panel-title"><a data-toggle="collapse" data-parent="#accordion1" href="#collapseOne">
              Collapsible Group #1
              </a></h4>
            </div>
            <div id="collapseOne" class="panel-collapse collapse in">
              <div class="panel-body">
                This is a simple accordion inner content...
              </div>
            </div>
          </div>
          <div class="panel panel-default">
            <div class="panel-heading">
              <h4 class="panel-title"><a data-toggle="collapse" data-parent="#accordion1" href="#collapseTwo">
                Collapsible Group #2 (With nested accordion inside)
              </a></h4>
            </div>
            <div id="collapseTwo" class="panel-collapse collapse">
              <div class="panel-body">

                <!-- Here we insert another nested accordion -->

                <div class="panel-group" id="accordion2">
                  <div class="panel panel-default">
                    <div class="panel-heading">
                      <h4 class="panel-title"><a data-toggle="collapse" data-parent="#accordion2" href="#collapseInnerOne">
                        Collapsible Inner Group Item #1
                      </a></h4>
                    </div>
                    <div id="collapseInnerOne" class="panel-collapse collapse in">
                      <div class="panel-body">
                        Anim pariatur cliche...
                      </div>
                    </div>
                  </div>
                  <div class="panel panel-default">
                    <div class="panel-heading">
                      <h4 class="panel-title"><a data-toggle="collapse" data-parent="#accordion2" href="#collapseInnerTwo">
                        Collapsible Inner Group Item #2
                      </a></h4>
                    </div>
                    <div id="collapseInnerTwo" class="panel-collapse collapse">
                      <div class="panel-body">
                        Anim pariatur cliche...
                      </div>
                    </div>
                  </div>
                </div>

                <!-- Inner accordion ends here -->

              </div>
            </div>
          </div>
        </div>