Fixed nesting in the tree menu

three_d_viewer/templates/three_d_viewer/sampletree.html

@@ -12,13 +12,7 @@
         <ul>
             <ul class="nav nav-list tree">
                 {% for category in parent_categories %}
-                    <li><label class="tree-toggle nav-header">{{ category.name }}</label>
-                        <ul class="nav nav-list tree">
-                            {% for sample in category.samples.all %}
-                                <li><a href="{% url 'three_d_viewer:detail' sample.id %}">{{ sample.name }}</a></li>
-                            {% endfor %}
-                        </ul>
-                    </li>
+                    {% include "three_d_viewer/treenode.html" %}
                 {% endfor %}
             </ul>
         </ul>

three_d_viewer/templates/three_d_viewer/treenode.html

@@ -0,0 +1,14 @@
+<li><label class="tree-toggle nav-header">{{ category.name }}</label>
+    <ul class="nav nav-list tree">
+    {% for child in category.children.all %}
+        {% with category=child template_name="three_d_viewer/treenode.html" %}
+            <ul style="list-style: none;">
+                {% include template_name %}
+            </ul>
+        {%endwith%}
+    {% endfor %}
+    {% for sample in category.samples.all %}
+            <li><a href="{% url 'three_d_viewer:detail' sample.id %}">{{ sample.name }}</a></li>
+    {% endfor %}
+    </ul>
+</li>