feat: active callback for sidebar navigation (#1165)

Author: lukasvinclav

docs/tabs/dynamic.md

@@ -41,7 +41,8 @@ def tabs_callback(request: HttpRequest) -> list[dict[str, Any]]:
                 {
                     "title": _("Your custom title"),
                     "link": reverse_lazy("admin:app_label_model_name_changelist"),
-                    "is_active": True # Configure active tab
+                    "active": True # Configure active tab
+                    # "active": lambda request: True
                 },
             ],
         },

src/unfold/sites.py

@@ -231,14 +231,16 @@ def get_sidebar_list(self, request: HttpRequest) -> list[dict[str, Any]]:
         tabs = self._get_value(self._get_config("TABS", request), request) or []
         results = []
 
-        for group in navigation:
+        for group in copy.deepcopy(navigation):
             allowed_items = []
 
             for item in group["items"]:
-                item["active"] = False
-                item["active"] = self._get_is_active(
-                    request, item.get("link_callback") or item["link"]
-                )
+                if "active" in item:
+                    item["active"] = self._get_value(item["active"], request)
+                else:
+                    item["active"] = self._get_is_active(
+                        request, item.get("link_callback") or item["link"]
+                    )
 
                 # Checks if any tab item is active and then marks the sidebar link as active
                 for tab in tabs:
@@ -342,7 +344,7 @@ def _replace_values(self, target: dict, source: dict, request: HttpRequest):
         return target
 
     def _get_is_active(
-        self, request: HttpRequest, link: str, is_tab: bool = False
+        self, request: HttpRequest, link: Union[str, Callable], is_tab: bool = False
     ) -> bool:
         if not isinstance(link, str):
             link = str(link)