Update Flask

libs/flask/wrappers.py

@@ -10,9 +10,9 @@
 """
 
 from werkzeug.wrappers import Request as RequestBase, Response as ResponseBase
-from werkzeug.exceptions import BadRequest
 from werkzeug.utils import cached_property
 
+from .exceptions import JSONBadRequest
 from .debughelpers import attach_enctype_error_multidict
 from .helpers import json, _assert_have_json
 from .globals import _request_ctx_stack
@@ -108,12 +108,22 @@ class Request(RequestBase):
 
     def on_json_loading_failed(self, e):
         """Called if decoding of the JSON data failed.  The return value of
-        this method is used by :attr:`json` when an error ocurred.  The
-        default implementation raises a :class:`~werkzeug.exceptions.BadRequest`.
+        this method is used by :attr:`json` when an error ocurred.  The default
+        implementation raises a :class:`JSONBadRequest`, which is a subclass of
+        :class:`~werkzeug.exceptions.BadRequest` which sets the
+        ``Content-Type`` to ``application/json`` and provides a JSON-formatted
+        error description::
+
+            {"description": "The browser (or proxy) sent a request that \
+                             this server could not understand."}
+
+        .. versionchanged:: 0.9
+           Return a :class:`JSONBadRequest` instead of a
+           :class:`~werkzeug.exceptions.BadRequest` by default.
 
         .. versionadded:: 0.8
         """
-        raise BadRequest()
+        raise JSONBadRequest()
 
     def _load_form_data(self):
         RequestBase._load_form_data(self)