unreleased
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==========
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Features
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--------
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- Added an execution policy hook to the request pipeline. An execution
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policy has the ability to control creation and execution of the request
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objects before they enter rest of the pipeline. This means for a given
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request that the policy may create more than one request for retry
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purposes. See https://github.com/Pylons/pyramid/pull/2964
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- Support an ``open_url`` config setting in the ``pserve`` section of the
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config file. This url is used to open a web browser when ``pserve --browser``
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is invoked. When this setting is unavailable the ``pserve`` script will
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attempt to guess the port the server is using from the
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``server:<server_name>`` section of the config file but there is no
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requirement that the server is being run in this format so it may fail.
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See https://github.com/Pylons/pyramid/pull/2984
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- The threadlocals are now available inside any function invoked via
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``config.include``. This means the only config-time code that cannot rely
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on threadlocals is code executed from non-actions inside the main. This
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can be alleviated by invoking ``config.begin()`` and ``config.end()``
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appropriately. See https://github.com/Pylons/pyramid/pull/2989
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- A new CSRF implementation, ``pyramid.csrf.SessionCSRFStoragePolicy``,
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has been added which delegates all CSRF generation to the current session,
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following the old API for this. A ``pyramid.csrf.get_csrf_token()`` api is now
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available in template global scope, to make it easy for template developers
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to get the current CSRF token without adding it to Python code.
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See https://github.com/Pylons/pyramid/pull/2854 and
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https://github.com/Pylons/pyramid/pull/3019
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- The ``pyramid.config.Configurator`` can now be used as a context manager
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which will automatically push/pop threadlocals (similar to
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``config.begin()`` and ``config.end()``). It will also automatically perform
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a ``config.commit()`` and thus it is only recommended to be used at the
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top-level of your app. See https://github.com/Pylons/pyramid/pull/2874
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Bug Fixes
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---------
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- HTTPException's accepts a detail kwarg that may be used to pass additional
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details to the exception. You may now pass objects so long as they have a
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valid __str__ method. See https://github.com/Pylons/pyramid/pull/2951
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- Fix a reference cycle causing memory leaks in which the registry
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would keep a ``Configurator`` instance alive even after the configurator
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was discarded. Another fix was also added for the ``global_registries``
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object in which the registry was stored in a closure preventing it from
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being deallocated. See https://github.com/Pylons/pyramid/pull/2967
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- Fix a bug directly invoking ``pyramid.scripts.pserve.main`` with the
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``--reload`` option in which ``sys.argv`` is always used in the subprocess
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instead of the supplied ``argv``.
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See https://github.com/Pylons/pyramid/pull/2962
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Deprecations
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------------
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Backward Incompatibilities
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--------------------------
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Documentation Changes
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---------------------
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- Retrieving CSRF token from the session has been deprecated, in favor of
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equivalent methods in :mod:`pyramid.csrf`.
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See https://github.com/Pylons/pyramid/pull/2854
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