nicer code and changelog note

Author: Tomáš Trval

CHANGELOG.rst

@@ -35,7 +35,7 @@ Bug Fixes
 ::
 
    * Fixing test as HTTP Header MIMEAccept expects quality-factor number in form of `X.X` (#547) [chipndell]
-
+   * Fixing flask 3.0+ compatibility of `flask.scaffold import _endpoint_from_view_func` Import error. (#565) [Ryu-CZ]
 
 .. _enhancements-1.2.0:
 

flask_restx/utils.py

@@ -126,6 +126,16 @@ def unpack(response, default_code=HTTPStatus.OK):
         raise ValueError("Too many response values")
 
 
+def to_view_name(view_func: typing.Callable) -> str:
+    """Helper that returns the default endpoint for a given
+    function. This always is the function name.
+
+    Note: copy of simple flask internal helper
+    """
+    assert view_func is not None, "expected view func if endpoint is not provided."
+    return view_func.__name__
+
+
 def import_check_view_func():
     """
     Resolve import flask _endpoint_from_view_func.
@@ -138,14 +148,6 @@ def import_check_view_func():
     import importlib.metadata
 
     flask_version = importlib.metadata.version("flask").split(".")
-
-    def local_endpoint_from_view_func(view_func: typing.Callable) -> str:
-        """Copy of flask internal helper that returns the default endpoint for a given
-        function.  This always is the function name.
-        """
-        assert view_func is not None, "expected view func if endpoint is not provided."
-        return view_func.__name__
-
     try:
         if flask_version[0] == "1":
             from flask.helpers import _endpoint_from_view_func
@@ -160,5 +162,5 @@ def local_endpoint_from_view_func(view_func: typing.Callable) -> str:
         warnings.simplefilter("once", FlaskCompatibilityWarning)
         _endpoint_from_view_func = None
     if _endpoint_from_view_func is None:
-        _endpoint_from_view_func = local_endpoint_from_view_func
+        _endpoint_from_view_func = to_view_name
     return _endpoint_from_view_func

tests/test_utils.py

@@ -98,3 +98,17 @@ def test_value_headers_default_code(self):
     def test_too_many_values(self):
         with pytest.raises(ValueError):
             utils.unpack((None, None, None, None))
+
+
+class ToViewNameTest(object):
+    def test_none(self):
+        with pytest.raises(AssertionError):
+            _ = utils.to_view_name(None)
+
+    def test_name(self):
+        assert self.test_none == self.test_none.__name__
+
+
+class ImportCheckViewFuncTest(object):
+    def test_callable(self):
+        assert callable(utils.import_check_view_func())