add ability to override template name in tag (#11)

Author: joshuadavidthomas

src/django_simple_nav/nav.py

@@ -17,14 +17,16 @@ class Nav:
     items: list[NavGroup | NavItem]
 
     @classmethod
-    def render_from_request(cls, request: HttpRequest) -> str:
+    def render_from_request(
+        cls, request: HttpRequest, template_name: str | None = None
+    ) -> str:
         items = [
             RenderedNavItem(item, request)
             for item in cls.items
             if check_item_permissions(item, request.user)  # type: ignore[arg-type]
         ]
         return render_to_string(
-            template_name=cls.template_name,
+            template_name=template_name or cls.template_name,
             context={"items": items},
         )
 

src/django_simple_nav/templatetags/django_simple_nav.py

@@ -8,6 +8,10 @@
 
 
 @register.simple_tag(takes_context=True)
-def django_simple_nav(context: Context, nav_path: str) -> str:
+def django_simple_nav(
+    context: Context, nav_path: str, template_name: str | None = None
+) -> str:
     nav = import_string(nav_path)
-    return nav.render_from_request(request=context["request"])
+    return nav.render_from_request(
+        request=context["request"], template_name=template_name
+    )

tests/templates/tests/alternate.html

@@ -0,0 +1,4 @@
+<div>
+  This is an alternate template.
+</div>
+{% include "tests/dummy_nav.html"}

tests/test_nav.py

@@ -87,3 +87,11 @@ def test_nav_render_with_permissions(req, count_anchors, permission, expected_co
     rendered_template = DummyNav.render_from_request(req)
 
     assert count_anchors(rendered_template) == expected_count
+
+
+def test_nav_render_from_request_with_template_name(req):
+    req.user = AnonymousUser()
+
+    rendered_template = DummyNav.render_from_request(req, "tests/alternate.html")
+
+    assert "This is an alternate template." in rendered_template

tests/test_templatetags.py

@@ -14,3 +14,14 @@ def test_django_simple_nav_templatetag(req, count_anchors):
     rendered_template = template.render(Context({"request": req}))
 
     assert count_anchors(rendered_template) == 7
+
+
+def test_templatetag_with_template_name(req):
+    template = Template(
+        "{% load django_simple_nav %} {% django_simple_nav 'tests.navs.DummyNav' 'tests/alternate.html' %}"
+    )
+    req.user = AnonymousUser()
+
+    rendered_template = template.render(Context({"request": req}))
+
+    assert "This is an alternate template." in rendered_template