def invoke_exception_view(self,
exc_info=None,
request=None,
secure=True,
reraise=False):
""" Executes an exception view related to the request it's called upon.
The arguments it takes are these:
``exc_info``
If provided, should be a 3-tuple in the form provided by
``sys.exc_info()``. If not provided,
``sys.exc_info()`` will be called to obtain the current
interpreter exception information. Default: ``None``.
``request``
If the request to be used is not the same one as the instance that
this method is called upon, it may be passed here. Default:
``None``.
``secure``
If the exception view should not be rendered if the current user
does not have the appropriate permission, this should be ``True``.
Default: ``True``.
``reraise``
A boolean indicating whether the original error should be reraised
if a :term:`response` object could not be created. If ``False``
then an :class:`pyramid.httpexceptions.HTTPNotFound`` exception
will be raised. Default: ``False``.
If a response is generated then ``request.exception`` and
``request.exc_info`` will be left at the values used to render the
response. Otherwise the previous values for ``request.exception`` and
``request.exc_info`` will be restored.
.. versionadded:: 1.7
.. versionchanged:: 1.9
The ``request.exception`` and ``request.exc_info`` properties will
reflect the exception used to render the response where previously
they were reset to the values prior to invoking the method.
Also added the ``reraise`` argument.
"""
if request is None:
request = self
registry = getattr(request, 'registry', None)
if registry is None:
registry = get_current_registry()
if registry is None:
raise RuntimeError("Unable to retrieve registry")
if exc_info is None:
exc_info = sys.exc_info()
exc = exc_info[1]
attrs = request.__dict__
context_iface = providedBy(exc)
# clear old generated request.response, if any; it may
# have been mutated by the view, and its state is not
# sane (e.g. caching headers)
with hide_attrs(request, 'response', 'exc_info', 'exception'):
attrs['exception'] = exc
attrs['exc_info'] = exc_info
# we use .get instead of .__getitem__ below due to
# https://github.com/Pylons/pyramid/issues/700
request_iface = attrs.get('request_iface', IRequest)
manager.push({'request': request, 'registry': registry})
try:
response = _call_view(
registry,
request,
exc,
context_iface,
'',
view_types=None,
view_classifier=IExceptionViewClassifier,
secure=secure,
request_iface=request_iface.combined,
)
except Exception:
if reraise:
reraise_(*exc_info)
raise
finally:
manager.pop()
if response is None:
if reraise:
reraise_(*exc_info)
raise HTTPNotFound
# successful response, overwrite exception/exc_info
attrs['exception'] = exc
attrs['exc_info'] = exc_info
return response
def invoke_exception_view(
self, exc_info=None, request=None, secure=True, reraise=False
):
""" Executes an exception view related to the request it's called upon.
The arguments it takes are these:
``exc_info``
If provided, should be a 3-tuple in the form provided by
``sys.exc_info()``. If not provided,
``sys.exc_info()`` will be called to obtain the current
interpreter exception information. Default: ``None``.
``request``
If the request to be used is not the same one as the instance that
this method is called upon, it may be passed here. Default:
``None``.
``secure``
If the exception view should not be rendered if the current user
does not have the appropriate permission, this should be ``True``.
Default: ``True``.
``reraise``
A boolean indicating whether the original error should be reraised
if a :term:`response` object could not be created. If ``False``
then an :class:`pyramid.httpexceptions.HTTPNotFound`` exception
will be raised. Default: ``False``.
If a response is generated then ``request.exception`` and
``request.exc_info`` will be left at the values used to render the
response. Otherwise the previous values for ``request.exception`` and
``request.exc_info`` will be restored.
.. versionadded:: 1.7
.. versionchanged:: 1.9
The ``request.exception`` and ``request.exc_info`` properties will
reflect the exception used to render the response where previously
they were reset to the values prior to invoking the method.
Also added the ``reraise`` argument.
"""
if request is None:
request = self
registry = getattr(request, 'registry', None)
if registry is None:
registry = get_current_registry()
if registry is None:
raise RuntimeError("Unable to retrieve registry")
if exc_info is None:
exc_info = sys.exc_info()
exc = exc_info[1]
attrs = request.__dict__
context_iface = providedBy(exc)
# clear old generated request.response, if any; it may
# have been mutated by the view, and its state is not
# sane (e.g. caching headers)
with hide_attrs(request, 'response', 'exc_info', 'exception'):
attrs['exception'] = exc
attrs['exc_info'] = exc_info
# we use .get instead of .__getitem__ below due to
# https://github.com/Pylons/pyramid/issues/700
request_iface = attrs.get('request_iface', IRequest)
manager.push({'request': request, 'registry': registry})
try:
response = _call_view(
registry,
request,
exc,
context_iface,
'',
view_types=None,
view_classifier=IExceptionViewClassifier,
secure=secure,
request_iface=request_iface.combined,
)
except Exception:
if reraise:
reraise_(*exc_info)
raise
finally:
manager.pop()
if response is None:
if reraise:
reraise_(*exc_info)
raise HTTPNotFound
# successful response, overwrite exception/exc_info
attrs['exception'] = exc
attrs['exc_info'] = exc_info
return response