fix: wire YAML export POST to NetBox bulk-select form convention

- post() now reads request.POST.getlist('pk') (NetBox convention)
- template overrides bulk_buttons block with Export Selected YAML button
  using formaction to piggyback on the existing bulk-select form
- update test to post {pk: [pk]} matching the new convention

Author: marcinpsk

netbox_interface_name_rules/templates/netbox_interface_name_rules/interfacenamerule_list.html

@@ -153,3 +153,13 @@ <h6 class="mt-3">Examples</h6>
         <i class="mdi mdi-download"></i> Export YAML
     </a>
 {% endblock %}
+
+{% block bulk_buttons %}
+    {{ block.super }}
+    <button type="submit"
+            formaction="{% url 'plugins:netbox_interface_name_rules:interfacenamerule_export_yaml' %}"
+            class="btn btn-outline-secondary btn-sm"
+            title="Export selected rules as YAML">
+        <i class="mdi mdi-download"></i> Export Selected YAML
+    </button>
+{% endblock %}

netbox_interface_name_rules/tests/test_views.py

@@ -767,13 +767,13 @@ def test_yaml_export_all_contains_rules(self):
         self.assertGreaterEqual(len(data), 1)
 
     def test_yaml_export_selected_rules_via_post(self):
-        """POST with pk_ form fields must export only the selected rules."""
+        """POST with NetBox bulk-select pk inputs must export only the selected rules."""
         import yaml
 
         self.client.force_login(self.superuser)
         response = self.client.post(
             self.YAML_URL,
-            {f"pk_{self.rule.pk}": self.rule.pk},
+            {"pk": [self.rule.pk]},
         )
         self.assertEqual(response.status_code, 200)
         data = yaml.safe_load(response.content)

netbox_interface_name_rules/views.py

@@ -141,8 +141,13 @@ def get(self, request):
         return self._build_response(InterfaceNameRule.objects.all())
 
     def post(self, request):
-        """Export selected rules (pk_<n> form fields) as YAML, or all if none selected."""
-        pk_list = [int(v) for k, v in request.POST.items() if k.startswith("pk_") and v.isdigit()]
+        """Export selected rules as YAML using NetBox's bulk-select form (pk inputs).
+
+        The parent object_list.html wraps the table in a POST form; selected rows
+        post their PKs as repeated ``pk`` inputs.  Falls back to all rules when
+        nothing is selected.
+        """
+        pk_list = [int(v) for v in request.POST.getlist("pk") if v.isdigit()]
         if pk_list:
             queryset = InterfaceNameRule.objects.filter(pk__in=pk_list)
         else: