Fixed #27505 -- Allowed customizing Paginator's error messages.

1 files changed, 22 insertions, 5 deletions

diff --git a/django/core/paginator.py b/django/core/paginator.py
index 131ea0f811..7b3189cc8b 100644
--- a/django/core/paginator.py
+++ b/django/core/paginator.py
@@ -28,13 +28,30 @@ class Paginator:
     # Translators: String used to replace omitted page numbers in elided page
     # range generated by paginators, e.g. [1, 2, '…', 5, 6, 7, '…', 9, 10].
     ELLIPSIS = _("…")
-
-    def __init__(self, object_list, per_page, orphans=0, allow_empty_first_page=True):
+    default_error_messages = {
+        "invalid_page": _("That page number is not an integer"),
+        "min_page": _("That page number is less than 1"),
+        "no_results": _("That page contains no results"),
+    }
+
+    def __init__(
+        self,
+        object_list,
+        per_page,
+        orphans=0,
+        allow_empty_first_page=True,
+        error_messages=None,
+    ):
         self.object_list = object_list
         self._check_object_list_is_ordered()
         self.per_page = int(per_page)
         self.orphans = int(orphans)
         self.allow_empty_first_page = allow_empty_first_page
+        self.error_messages = (
+            self.default_error_messages
+            if error_messages is None
+            else self.default_error_messages | error_messages
+        )
 
     def __iter__(self):
         for page_number in self.page_range:
@@ -47,11 +64,11 @@ class Paginator:
                 raise ValueError
             number = int(number)
         except (TypeError, ValueError):
-            raise PageNotAnInteger(_("That page number is not an integer"))
+            raise PageNotAnInteger(self.error_messages["invalid_page"])
         if number < 1:
-            raise EmptyPage(_("That page number is less than 1"))
+            raise EmptyPage(self.error_messages["min_page"])
         if number > self.num_pages:
-            raise EmptyPage(_("That page contains no results"))
+            raise EmptyPage(self.error_messages["no_results"])
         return number
 
     def get_page(self, number):