Move get_observe_request to DebugToolbar

This avoids having to import the function within a panel.

Author: tim-schilling

debug_toolbar/panels/history/panel.py

@@ -11,7 +11,6 @@
 from debug_toolbar.panels import Panel
 from debug_toolbar.panels.history import views
 from debug_toolbar.panels.history.forms import HistoryStoreForm
-from debug_toolbar.toolbar import get_observe_request
 
 
 class HistoryPanel(Panel):
@@ -23,7 +22,7 @@ class HistoryPanel(Panel):
 
     def get_headers(self, request):
         headers = super().get_headers(request)
-        observe_request = get_observe_request()
+        observe_request = self.toolbar.get_observe_request()
         store_id = getattr(self.toolbar, "store_id")
         if store_id and observe_request(request):
             headers["DJDT-STORE-ID"] = store_id

debug_toolbar/toolbar.py

@@ -156,20 +156,20 @@ def is_toolbar_request(cls, request):
             return False
         return resolver_match.namespaces and resolver_match.namespaces[-1] == app_name
 
+    @staticmethod
+    @lru_cache
+    def get_observe_request():
+        # If OBSERVE_REQUEST_CALLBACK is a string, which is the recommended
+        # setup, resolve it to the corresponding callable.
+        func_or_path = dt_settings.get_config()["OBSERVE_REQUEST_CALLBACK"]
+        if isinstance(func_or_path, str):
+            return import_string(func_or_path)
+        else:
+            return func_or_path
+
 
 def observe_request(request):
     """
-    Default function to determine whether to update the toolbar from a client side request
+    Determine whether to update the toolbar from a client side request.
     """
     return not DebugToolbar.is_toolbar_request(request)
-
-
-@lru_cache()
-def get_observe_request():
-    # If OBSERVE_REQUEST_CALLBACK is a string, which is the recommended
-    # setup, resolve it to the corresponding callable.
-    func_or_path = dt_settings.get_config()["OBSERVE_REQUEST_CALLBACK"]
-    if isinstance(func_or_path, str):
-        return import_string(func_or_path)
-    else:
-        return func_or_path