From dd357250217ec4b5eeba96e245c46509f231c6d8 Mon Sep 17 00:00:00 2001
From: Michael Merickel <michael@merickel.org>
Date: Mon, 3 Sep 2018 21:21:20 -0500
Subject: fallback to __contains__ if a media range is supplied

---
 pyramid/config/routes.py |  9 +++++++++
 pyramid/config/views.py  | 13 ++++++++++++-
 pyramid/predicates.py    |  5 +++++
 3 files changed, 26 insertions(+), 1 deletion(-)

diff --git a/pyramid/config/routes.py b/pyramid/config/routes.py
index 051bd9edb..b701a4bef 100644
--- a/pyramid/config/routes.py
+++ b/pyramid/config/routes.py
@@ -299,6 +299,15 @@ class RoutesConfiguratorMixin(object):
                 stacklevel=3
                 )
 
+        if accept is not None and '*' in accept:
+            warnings.warn(
+                ('The usage of a media range in the "accept" route predicate '
+                 'is deprecated as of Pyramid 1.10. Use a list of explicit '
+                 'media types instead.'),
+                DeprecationWarning,
+                stacklevel=4,
+            )
+
         if accept is not None:
             accept = accept.lower()
 
diff --git a/pyramid/config/views.py b/pyramid/config/views.py
index d6a80fe11..87584b858 100644
--- a/pyramid/config/views.py
+++ b/pyramid/config/views.py
@@ -123,7 +123,7 @@ class MultiView(object):
                     self.views[i] = (order, view, phash)
                     return
 
-        if accept is None:
+        if accept is None or '*' in accept:
             self.views.append((order, view, phash))
             self.views.sort(key=operator.itemgetter(0))
         else:
@@ -818,6 +818,17 @@ class ViewsConfiguratorMixin(object):
                 stacklevel=4,
                 )
 
+        if accept is not None and '*' in accept:
+            warnings.warn(
+                ('The usage of a media range in the "accept" view predicate '
+                 'is deprecated as of Pyramid 1.10. Register multiple views '
+                 'with explicit media ranges and read '
+                 '"Accept Header Content Negotiation" in the '
+                 '"View Configuration" documentation for more information.'),
+                DeprecationWarning,
+                stacklevel=4,
+            )
+
         if accept is not None and is_nonstr_iter(accept):
             raise ConfigurationError(
                 'A list is not supported in the "accept" view predicate.',
diff --git a/pyramid/predicates.py b/pyramid/predicates.py
index 91fb41006..262b28d89 100644
--- a/pyramid/predicates.py
+++ b/pyramid/predicates.py
@@ -130,8 +130,11 @@ class HeaderPredicate(object):
         return self.val.match(val) is not None
 
 class AcceptPredicate(object):
+    _use_deprecated_range_fallback = False
+
     def __init__(self, val, config):
         if not is_nonstr_iter(val):
+            self._use_deprecated_range_fallback = '*' in val
             val = (val,)
         self.values = val
 
@@ -141,6 +144,8 @@ class AcceptPredicate(object):
     phash = text
 
     def __call__(self, context, request):
+        if self._use_deprecated_range_fallback:
+            return self.values[0] in request.accept
         return bool(request.accept.acceptable_offers(self.values))
 
 class ContainmentPredicate(object):
-- 
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