The Pyramid Web Framework, a Pylons project
Project description
Pyramid
Pyramid is a small, fast, down-to-earth, open source Python web framework. It makes real-world web application development and deployment more fun, more predictable, and more productive.
Pyramid is produced by the Pylons Project.
Support and Documentation
See the Pylons Project website to view documentation, report bugs, and obtain support.
Developing and Contributing
See HACKING.txt and contributing.md for guidelines for running tests, adding features, coding style, and updating documentation when developing in or contributing to Pyramid.
License
Pyramid is offered under the BSD-derived Repoze Public License.
1.7a2 (2016-04-19)
Features
Automatic CSRF checks are now disabled by default on exception views. They can be turned back on by setting the appropriate require_csrf option on the view. See https://github.com/Pylons/pyramid/pull/2517
The automatic CSRF API was reworked to use a config directive for setting the options. The pyramid.require_default_csrf setting is no longer supported. Instead, a new config.set_default_csrf_options directive has been introduced that allows the developer to specify the default value for require_csrf as well as change the CSRF token, header and safe request methods. The pyramid.csrf_trusted_origins setting is still supported. See https://github.com/Pylons/pyramid/pull/2518
Bug fixes
CSRF origin checks had a bug causing the checks to always fail. See https://github.com/Pylons/pyramid/pull/2512
Fix the test suite to pass on windows. See https://github.com/Pylons/pyramid/pull/2520
1.7a1 (2016-04-16)
Backward Incompatibilities
Following the Pyramid deprecation period (1.4 -> 1.6), AuthTktAuthenticationPolicy’s default hashing algorithm is changing from md5 to sha512. If you are using the authentication policy and need to continue using md5, please explicitly set hashalg to ‘md5’.
This change does mean that any existing auth tickets (and associated cookies) will no longer be valid, and users will no longer be logged in, and have to login to their accounts again.
The check_csrf_token function no longer validates a csrf token in the query string of a request. Only headers and request bodies are supported. See https://github.com/Pylons/pyramid/pull/2500
Features
Added a new setting, pyramid.require_default_csrf which may be used to turn on CSRF checks globally for every POST request in the application. This should be considered a good default for websites built on Pyramid. It is possible to opt-out of CSRF checks on a per-view basis by setting require_csrf=False on those views. See https://github.com/Pylons/pyramid/pull/2413
Added a require_csrf view option which will enforce CSRF checks on any request with an unsafe method as defined by RFC2616. If the CSRF check fails a BadCSRFToken exception will be raised and may be caught by exception views (the default response is a 400 Bad Request). This option should be used in place of the deprecated check_csrf view predicate which would normally result in unexpected 404 Not Found response to the client instead of a catchable exception. See https://github.com/Pylons/pyramid/pull/2413 and https://github.com/Pylons/pyramid/pull/2500
Added an additional CSRF validation that checks the origin/referrer of a request and makes sure it matches the current request.domain. This particular check is only active when accessing a site over HTTPS as otherwise browsers don’t always send the required information. If this additional CSRF validation fails a BadCSRFOrigin exception will be raised and may be caught by exception views (the default response is 400 Bad Request). Additional allowed origins may be configured by setting pyramid.csrf_trusted_origins to a list of domain names (with ports if on a non standard port) to allow. Subdomains are not allowed unless the domain name has been prefixed with a .. See https://github.com/Pylons/pyramid/pull/2501
Added a new pyramid.session.check_csrf_origin API for validating the origin or referrer headers against the request’s domain. See https://github.com/Pylons/pyramid/pull/2501
Pyramid HTTPExceptions will now take into account the best match for the clients Accept header, and depending on what is requested will return text/html, application/json or text/plain. The default for / is still text/html, but if application/json is explicitly mentioned it will now receive a valid JSON response. See https://github.com/Pylons/pyramid/pull/2489
A new event and interface (BeforeTraversal) has been introduced that will notify listeners before traversal starts in the router. See https://github.com/Pylons/pyramid/pull/2469 and https://github.com/Pylons/pyramid/pull/1876
Add a new “view deriver” concept to Pyramid to allow framework authors to inject elements into the standard Pyramid view pipeline and affect all views in an application. This is similar to a decorator except that it has access to options passed to config.add_view and can affect other stages of the pipeline such as the raw response from a view or prior to security checks. See https://github.com/Pylons/pyramid/pull/2021
Allow a leading = on the key of the request param predicate. For example, ‘=abc=1’ is equivalent down to request.params['=abc'] == '1'. See https://github.com/Pylons/pyramid/pull/1370
A new request.invoke_exception_view(...) method which can be used to invoke an exception view and get back a response. This is useful for rendering an exception view outside of the context of the excview tween where you may need more control over the request. See https://github.com/Pylons/pyramid/pull/2393
Allow using variable substitutions like %(LOGGING_LOGGER_ROOT_LEVEL)s for logging sections of the .ini file and populate these variables from the pserve command line – e.g.: pserve development.ini LOGGING_LOGGER_ROOT_LEVEL=DEBUG See https://github.com/Pylons/pyramid/pull/2399
Documentation Changes
A complete overhaul of the docs:
Use pip instead of easy_install.
Become opinionated by preferring Python 3.4 or greater to simplify installation of Python and its required packaging tools.
Use venv for the tool, and virtual environment for the thing created, instead of virtualenv.
Use py.test and pytest-cov instead of nose and coverage.
Further updates to the scaffolds as well as tutorials and their src files.
A complete overhaul of the alchemy scaffold as well as the Wiki2 SQLAlchemy + URLDispatch tutorial to introduce more modern features into the usage of SQLAlchemy with Pyramid and provide a better starting point for new projects. See https://github.com/Pylons/pyramid/pull/2024
Bug Fixes
Fix pserve --browser to use the --server-name instead of the app name when selecting a section to use. This was only working for people who had server and app sections with the same name, for example [app:main] and [server:main]. See https://github.com/Pylons/pyramid/pull/2292
Deprecations
The check_csrf view predicate has been deprecated. Use the new require_csrf option or the pyramid.require_default_csrf setting to ensure that the BadCSRFToken exception is raised. See https://github.com/Pylons/pyramid/pull/2413
Support for Python 3.3 will be removed in Pyramid 1.8. https://github.com/Pylons/pyramid/issues/2477
Python 2.6 is no longer supported by Pyramid. See https://github.com/Pylons/pyramid/issues/2368
Dropped Python 3.2 support. See https://github.com/Pylons/pyramid/pull/2256
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