netbox-community-netbox/netbox/utilities/templates/widgets/markdown_input.html

{% load i18n %}
<div class="markdown-widget">
  <ul class="nav nav-pills mb-1">
    <li class="nav-item" role="presentation">
      <button class="nav-link active " id="{{ widget.name }}-input-tab" data-bs-toggle="tab" data-bs-target="#{{ widget.name }}-input" type="button" role="tab" aria-controls="{{ widget.name }}-input" aria-selected="true">
        {% trans "Write" %}
      </button>
    </li>
    <li class="nav-item" role="presentation">
      <button hx-target="#{{ widget.name }}-preview" hx-swap="innerHTML" hx-post="{% url 'extras:render_markdown' %}" class="nav-link preview-button" id="{{ widget.name }}-markdown-preview-tab" data-bs-toggle="tab" data-bs-target="#{{ widget.name }}-markdown-preview" type="button" role="tab" aria-controls="{{ widget.name }}-markdown-preview" aria-selected="false">
        {% trans "Preview" %}
      </button>
    </li>
  </ul>
  <div class="tab-content text-bg-body rounded-bottom">
    <div class="tab-pane show active" id="{{ widget.name }}-input" role="tabpanel" aria-labelledby="{{ widget.name }}-input-tab">
      {% include "django/forms/widgets/textarea.html" %}
    </div>
    <div class="tab-pane show" id="{{ widget.name }}-markdown-preview" role="tabpanel" aria-labelledby="{{ widget.name }}-markdown-preview-tab">
      <div id="{{ widget.name }}-preview" class="preview px-3 py-2 border-1"></div>
    </div>
  </div>
</div>