Add support for passing unbound class methods to `add_view`

2 files changed, 33 insertions, 1 deletions

diff --git a/pyramid/config/views.py b/pyramid/config/views.py
index c01b72e12..3e305055f 100644
--- a/pyramid/config/views.py
+++ b/pyramid/config/views.py
@@ -42,7 +42,8 @@ from pyramid.compat import (
     url_quote,
     WIN,
     is_bound_method,
-    is_nonstr_iter
+    is_nonstr_iter,
+    im_self,
     )
 
 from pyramid.exceptions import (
@@ -418,6 +419,16 @@ class DefaultViewMapper(object):
         self.attr = kw.get('attr')
 
     def __call__(self, view):
+        # Map the attr directly if the passed in view is method and a
+        # constructor is defined and must be unbound (for backwards
+        # compatibility)
+        if inspect.ismethod(view):
+            is_bound = getattr(view, im_self, None) is not None
+
+            if not is_bound:
+                self.attr = view.__name__
+                view = view.im_class
+
         if inspect.isclass(view):
             view = self.map_class(view)
         else:
diff --git a/pyramid/tests/test_config/test_views.py b/pyramid/tests/test_config/test_views.py
index b0d03fb72..664208fad 100644
--- a/pyramid/tests/test_config/test_views.py
+++ b/pyramid/tests/test_config/test_views.py
@@ -1666,6 +1666,27 @@ class TestViewsConfigurationMixin(unittest.TestCase):
             renderer=null_renderer)
         self.assertRaises(ConfigurationConflictError, config.commit)
 
+    def test_add_view_class_method_no_attr(self):
+        from pyramid.renderers import null_renderer
+        from zope.interface import directlyProvides
+
+        class ViewClass(object):
+            def __init__(self, request):
+                self.request = request
+
+            def run(self):
+                return 'OK'
+
+        config = self._makeOne(autocommit=True)
+        config.add_view(view=ViewClass.run, renderer=null_renderer)
+
+        wrapper = self._getViewCallable(config)
+        context = DummyContext()
+        directlyProvides(context, IDummy)
+        request = self._makeRequest(config)
+        result = wrapper(context, request)
+        self.assertEqual(result, 'OK')
+
     def test_derive_view_function(self):
         from pyramid.renderers import null_renderer
         def view(request):