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will be ``None`` until an exception is caught by the Pyramid router, after
which it will be the result of ``sys.exc_info()``.
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use ``/projects/pyramid/current`` rather than ``/projects/pyramid/dev``.
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exception view will be working with a request.response that has not been
touched by any code prior to the exception.
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inappropriately used ``DBSession.rollback()`` instead of
``transaction.abort()`` in one place.
- Wiki2 (SQLAlchemy + URL Dispatch) tutorial ``models.initialize_sql`` didn't
match the ``pyramid_routesalchemy`` scaffold function of the same name; it
didn't get synchronized when it was changed in the scaffold.
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route to be added without an intermediate ``config.commit()``. If you now
receive a ``ConfigurationError`` at startup time that appears to be
``add_route`` related, you'll need to either a) ensure that all of your
route names are unique or b) call ``config.commit()`` before adding a
second route with the name of a previously added name or c) use a
Configurator that works in ``autocommit`` mode.
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(e.g. ``response_content_type``) now issues a deprecation warning at access
time rather than at rendering time.
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webob.exc.WSGIHTTPException (convenience).
- Use ``exc.message`` in docs rather than ``exc.args[0]`` now that
we control this.
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ensure they all work.
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- The ``pyramid.httpexceptions`` classes named ``HTTPFound``,
``HTTPMultipleChoices``, ``HTTPMovedPermanently``, ``HTTPSeeOther``,
``HTTPUseProxy``, and ``HTTPTemporaryRedirect`` now accept ``location`` as
their first positional argument rather than ``detail``. This means that
you can do, e.g. ``return pyramid.httpexceptions.HTTPFound('http://foo')``
rather than ``return
pyramid.httpexceptions.HTTPFound(location='http//foo')`` (the latter will
of course continue to work).
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should be used instead of the ``pyramid.view.is_response`` function, which
has been deprecated.
- Deprecated ``pyramid.view.is_response`` function in favor of (newly-added)
``pyramid.request.Request.is_response`` method. Determining if an object
is truly a valid response object now requires access to the registry, which
is only easily available as a request attribute. The
``pyramid.view.is_response`` function will still work until it is removed,
but now may return an incorrect answer under some (very uncommon)
circumstances.
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abstraction.
- It is now possible to return an arbitrary object from a Pyramid view
callable even if a renderer is not used, as long as a suitable adapter to
``pyramid.interfaces.IResponse`` is registered for the type of the returned
object. See the section in the Hooks chapter of the documentation entitled
"Changing How Pyramid Treats View Responses".
- The Pyramid router now, by default, expects response objects returned from
view callables to implement the ``pyramid.interfaces.IResponse`` interface.
Unlike the Pyramid 1.0 version of this interface, objects which implement
IResponse now must define a ``__call__`` method that accepts ``environ``
and ``start_response``, and which returns an ``app_iter`` iterable, among
other things. Previously, it was possible to return any object which had
the three WebOb ``app_iter``, ``headerlist``, and ``status`` attributes as
a response, so this is a backwards incompatibility. It is possible to get
backwards compatibility back by registering an adapter to IResponse from
the type of object you're now returning from view callables. See the
section in the Hooks chapter of the documentation entitled "Changing How
Pyramid Treats View Responses".
- The ``pyramid.interfaces.IResponse`` interface is now much more extensive.
Previously it defined only ``app_iter``, ``status`` and ``headerlist``; now
it is basically intended to directly mirror the ``webob.Response`` API,
which has many methods and attributes.
- Documentation changes to support above.
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method which implements the WSGI application interface
instead of the three webob attrs status, headerlist
and app_iter. Backwards compatibility exists for
code which returns response objects that do not
have a __call__.
- pyramid.response.Response is no longer an exception
(and therefore cannot be raised in order to generate
a response).
- Changed my mind about moving stuff from pyramid.httpexceptions
to pyramid.response. The stuff I moved over has been moved
back to pyramid.httpexceptions.
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``pyramid.httpexceptions.redirect``.
- Added "HTTP Exceptions" section to Views narrative chapter including a
description of ``pyramid.httpexceptions.abort``; adjusted redirect section
to note ``pyramid.httpexceptions.redirect``.
- A default exception view for the context ``webob.exc.HTTPException`` (aka
``pyramid.httpexceptions.HTTPException``) is now registered by default.
This means that an instance of any exception class imported from
``pyramid.httpexceptions`` (such as ``HTTPFound``) can now be raised from
within view code; when raised, this exception view will render the
exception to a response.
- New functions named ``pyramid.httpexceptions.abort`` and
``pyramid.httpexceptions.redirect`` perform the equivalent of their Pylons
brethren when an HTTP exception handler is registered. These functions
take advantage of the newly registered exception view for
``webob.exc.HTTPException``.
- The Configurator now accepts an additional keyword argument named
``httpexception_view``. By default, this argument is populated with a
default exception view function that will be used when an HTTP exception is
raised. When ``None`` is passed for this value, an exception view for HTTP
exceptions will not be registered. Passing ``None`` returns the behavior
of raising an HTTP exception to that of Pyramid 1.0 (the exception will
propagate to middleware and to the WSGI server).
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argument. If this argument is ``True``, the added route will never be
considered for matching when a request is handled. Instead, it will only
be useful for URL generation via ``route_url`` and ``route_path``. See the
section entitled "Static Routes" in the URL Dispatch narrative chapter for
more information.
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interface API documentation.
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