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David Lord 2022-07-24 19:37:30 -07:00
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@ -1,5 +1,3 @@
.. currentmodule:: flask
Version 2.2.0
-------------
@ -295,17 +293,17 @@ Released 2021-05-11
``click.get_current_context().obj`` if it's needed. :issue:`3552`
- The CLI shows better error messages when the app failed to load
when looking up commands. :issue:`2741`
- Add :meth:`sessions.SessionInterface.get_cookie_name` to allow
setting the session cookie name dynamically. :pr:`3369`
- Add :meth:`Config.from_file` to load config using arbitrary file
- Add ``SessionInterface.get_cookie_name`` to allow setting the
session cookie name dynamically. :pr:`3369`
- Add ``Config.from_file`` to load config using arbitrary file
loaders, such as ``toml.load`` or ``json.load``.
:meth:`Config.from_json` is deprecated in favor of this. :pr:`3398`
``Config.from_json`` is deprecated in favor of this. :pr:`3398`
- The ``flask run`` command will only defer errors on reload. Errors
present during the initial call will cause the server to exit with
the traceback immediately. :issue:`3431`
- :func:`send_file` raises a :exc:`ValueError` when passed an
:mod:`io` object in text mode. Previously, it would respond with
200 OK and an empty file. :issue:`3358`
- ``send_file`` raises a ``ValueError`` when passed an ``io`` object
in text mode. Previously, it would respond with 200 OK and an empty
file. :issue:`3358`
- When using ad-hoc certificates, check for the cryptography library
instead of PyOpenSSL. :pr:`3492`
- When specifying a factory function with ``FLASK_APP``, keyword
@ -416,31 +414,29 @@ Released 2019-07-04
base ``HTTPException``. This makes error handler behavior more
consistent. :pr:`3266`
- :meth:`Flask.finalize_request` is called for all unhandled
- ``Flask.finalize_request`` is called for all unhandled
exceptions even if there is no ``500`` error handler.
- :attr:`Flask.logger` takes the same name as
:attr:`Flask.name` (the value passed as
``Flask(import_name)``. This reverts 1.0's behavior of always
logging to ``"flask.app"``, in order to support multiple apps in the
same process. A warning will be shown if old configuration is
- ``Flask.logger`` takes the same name as ``Flask.name`` (the value
passed as ``Flask(import_name)``. This reverts 1.0's behavior of
always logging to ``"flask.app"``, in order to support multiple apps
in the same process. A warning will be shown if old configuration is
detected that needs to be moved. :issue:`2866`
- :meth:`flask.RequestContext.copy` includes the current session
object in the request context copy. This prevents ``session``
pointing to an out-of-date object. :issue:`2935`
- ``RequestContext.copy`` includes the current session object in the
request context copy. This prevents ``session`` pointing to an
out-of-date object. :issue:`2935`
- Using built-in RequestContext, unprintable Unicode characters in
Host header will result in a HTTP 400 response and not HTTP 500 as
previously. :pr:`2994`
- :func:`send_file` supports :class:`~os.PathLike` objects as
described in PEP 0519, to support :mod:`pathlib` in Python 3.
:pr:`3059`
- :func:`send_file` supports :class:`~io.BytesIO` partial content.
- ``send_file`` supports ``PathLike`` objects as described in
:pep:`519`, to support ``pathlib`` in Python 3. :pr:`3059`
- ``send_file`` supports ``BytesIO`` partial content.
:issue:`2957`
- :func:`open_resource` accepts the "rt" file mode. This still does
the same thing as "r". :issue:`3163`
- The :attr:`MethodView.methods` attribute set in a base class is used
by subclasses. :issue:`3138`
- :attr:`Flask.jinja_options` is a ``dict`` instead of an
- ``open_resource`` accepts the "rt" file mode. This still does the
same thing as "r". :issue:`3163`
- The ``MethodView.methods`` attribute set in a base class is used by
subclasses. :issue:`3138`
- ``Flask.jinja_options`` is a ``dict`` instead of an
``ImmutableDict`` to allow easier configuration. Changes must still
be made before creating the environment. :pr:`3190`
- Flask's ``JSONMixin`` for the request and response wrappers was
@ -454,15 +450,14 @@ Released 2019-07-04
:issue:`3134`
- Support empty ``static_folder`` without requiring setting an empty
``static_url_path`` as well. :pr:`3124`
- :meth:`jsonify` supports :class:`dataclasses.dataclass` objects.
:pr:`3195`
- Allow customizing the :attr:`Flask.url_map_class` used for routing.
- ``jsonify`` supports ``dataclass`` objects. :pr:`3195`
- Allow customizing the ``Flask.url_map_class`` used for routing.
:pr:`3069`
- The development server port can be set to 0, which tells the OS to
pick an available port. :issue:`2926`
- The return value from :meth:`cli.load_dotenv` is more consistent
with the documentation. It will return ``False`` if python-dotenv is
not installed, or if the given path isn't a file. :issue:`2937`
- The return value from ``cli.load_dotenv`` is more consistent with
the documentation. It will return ``False`` if python-dotenv is not
installed, or if the given path isn't a file. :issue:`2937`
- Signaling support has a stub for the ``connect_via`` method when
the Blinker library is not installed. :pr:`3208`
- Add an ``--extra-files`` option to the ``flask run`` CLI command to
@ -501,7 +496,7 @@ Released 2019-07-04
requires upgrading to Werkzeug 0.15.5. :issue:`3249`
- ``send_file`` url quotes the ":" and "/" characters for more
compatible UTF-8 filename support in some browsers. :issue:`3074`
- Fixes for PEP451 import loaders and pytest 5.x. :issue:`3275`
- Fixes for :pep:`451` import loaders and pytest 5.x. :issue:`3275`
- Show message about dotenv on stderr instead of stdout. :issue:`3285`
@ -510,16 +505,16 @@ Version 1.0.3
Released 2019-05-17
- :func:`send_file` encodes filenames as ASCII instead of Latin-1
- ``send_file`` encodes filenames as ASCII instead of Latin-1
(ISO-8859-1). This fixes compatibility with Gunicorn, which is
stricter about header encodings than PEP 3333. :issue:`2766`
stricter about header encodings than :pep:`3333`. :issue:`2766`
- Allow custom CLIs using ``FlaskGroup`` to set the debug flag without
it always being overwritten based on environment variables.
:pr:`2765`
- ``flask --version`` outputs Werkzeug's version and simplifies the
Python version. :pr:`2825`
- :func:`send_file` handles an ``attachment_filename`` that is a
native Python 2 string (bytes) with UTF-8 coded bytes. :issue:`2933`
- ``send_file`` handles an ``attachment_filename`` that is a native
Python 2 string (bytes) with UTF-8 coded bytes. :issue:`2933`
- A catch-all error handler registered for ``HTTPException`` will not
handle ``RoutingException``, which is used internally during
routing. This fixes the unexpected behavior that had been introduced
@ -567,32 +562,30 @@ Released 2018-04-26
- Bump minimum dependency versions to the latest stable versions:
Werkzeug >= 0.14, Jinja >= 2.10, itsdangerous >= 0.24, Click >= 5.1.
:issue:`2586`
- Skip :meth:`app.run <Flask.run>` when a Flask application is run
from the command line. This avoids some behavior that was confusing
to debug.
- Change the default for :data:`JSONIFY_PRETTYPRINT_REGULAR` to
``False``. :func:`~json.jsonify` returns a compact format by
default, and an indented format in debug mode. :pr:`2193`
- :meth:`Flask.__init__ <Flask>` accepts the ``host_matching``
argument and sets it on :attr:`~Flask.url_map`. :issue:`1559`
- :meth:`Flask.__init__ <Flask>` accepts the ``static_host`` argument
and passes it as the ``host`` argument when defining the static
route. :issue:`1559`
- :func:`send_file` supports Unicode in ``attachment_filename``.
- Skip ``app.run`` when a Flask application is run from the command
line. This avoids some behavior that was confusing to debug.
- Change the default for ``JSONIFY_PRETTYPRINT_REGULAR`` to
``False``. ``~json.jsonify`` returns a compact format by default,
and an indented format in debug mode. :pr:`2193`
- ``Flask.__init__`` accepts the ``host_matching`` argument and sets
it on ``Flask.url_map``. :issue:`1559`
- ``Flask.__init__`` accepts the ``static_host`` argument and passes
it as the ``host`` argument when defining the static route.
:issue:`1559`
- ``send_file`` supports Unicode in ``attachment_filename``.
:pr:`2223`
- Pass ``_scheme`` argument from :func:`url_for` to
:meth:`~Flask.handle_url_build_error`. :pr:`2017`
- :meth:`~Flask.add_url_rule` accepts the
``provide_automatic_options`` argument to disable adding the
``OPTIONS`` method. :pr:`1489`
- :class:`~views.MethodView` subclasses inherit method handlers from
base classes. :pr:`1936`
- Pass ``_scheme`` argument from ``url_for`` to
``Flask.handle_url_build_error``. :pr:`2017`
- ``Flask.add_url_rule`` accepts the ``provide_automatic_options``
argument to disable adding the ``OPTIONS`` method. :pr:`1489`
- ``MethodView`` subclasses inherit method handlers from base classes.
:pr:`1936`
- Errors caused while opening the session at the beginning of the
request are handled by the app's error handlers. :pr:`2254`
- Blueprints gained :attr:`~Blueprint.json_encoder` and
:attr:`~Blueprint.json_decoder` attributes to override the app's
- Blueprints gained ``Blueprint.json_encoder`` and
``Blueprint.json_decoder`` attributes to override the app's
encoder and decoder. :pr:`1898`
- :meth:`Flask.make_response` raises ``TypeError`` instead of
- ``Flask.make_response`` raises ``TypeError`` instead of
``ValueError`` for bad response types. The error messages have been
improved to describe why the type is invalid. :pr:`2256`
- Add ``routes`` CLI command to output routes registered on the
@ -607,52 +600,49 @@ Released 2018-04-26
``make_app`` from ``FLASK_APP``. :pr:`2297`
- Factory functions are not required to take a ``script_info``
parameter to work with the ``flask`` command. If they take a single
parameter or a parameter named ``script_info``, the
:class:`~cli.ScriptInfo` object will be passed. :pr:`2319`
parameter or a parameter named ``script_info``, the ``ScriptInfo``
object will be passed. :pr:`2319`
- ``FLASK_APP`` can be set to an app factory, with arguments if
needed, for example ``FLASK_APP=myproject.app:create_app('dev')``.
:pr:`2326`
- ``FLASK_APP`` can point to local packages that are not installed in
editable mode, although ``pip install -e`` is still preferred.
:pr:`2414`
- The :class:`~views.View` class attribute
:attr:`~views.View.provide_automatic_options` is set in
:meth:`~views.View.as_view`, to be detected by
:meth:`~Flask.add_url_rule`. :pr:`2316`
- The ``View`` class attribute
``View.provide_automatic_options`` is set in ``View.as_view``, to be
detected by ``Flask.add_url_rule``. :pr:`2316`
- Error handling will try handlers registered for ``blueprint, code``,
``app, code``, ``blueprint, exception``, ``app, exception``.
:pr:`2314`
- ``Cookie`` is added to the response's ``Vary`` header if the session
is accessed at all during the request (and not deleted). :pr:`2288`
- :meth:`~Flask.test_request_context` accepts ``subdomain`` and
- ``Flask.test_request_context`` accepts ``subdomain`` and
``url_scheme`` arguments for use when building the base URL.
:pr:`1621`
- Set :data:`APPLICATION_ROOT` to ``'/'`` by default. This was already
the implicit default when it was set to ``None``.
- :data:`TRAP_BAD_REQUEST_ERRORS` is enabled by default in debug mode.
- Set ``APPLICATION_ROOT`` to ``'/'`` by default. This was already the
implicit default when it was set to ``None``.
- ``TRAP_BAD_REQUEST_ERRORS`` is enabled by default in debug mode.
``BadRequestKeyError`` has a message with the bad key in debug mode
instead of the generic bad request message. :pr:`2348`
- Allow registering new tags with
:class:`~json.tag.TaggedJSONSerializer` to support storing other
types in the session cookie. :pr:`2352`
- Allow registering new tags with ``TaggedJSONSerializer`` to support
storing other types in the session cookie. :pr:`2352`
- Only open the session if the request has not been pushed onto the
context stack yet. This allows :func:`~stream_with_context`
generators to access the same session that the containing view uses.
:pr:`2354`
context stack yet. This allows ``stream_with_context`` generators to
access the same session that the containing view uses. :pr:`2354`
- Add ``json`` keyword argument for the test client request methods.
This will dump the given object as JSON and set the appropriate
content type. :pr:`2358`
- Extract JSON handling to a mixin applied to both the
:class:`Request` and :class:`Response` classes. This adds the
:meth:`~Response.is_json` and :meth:`~Response.get_json` methods to
the response to make testing JSON response much easier. :pr:`2358`
- Extract JSON handling to a mixin applied to both the ``Request`` and
``Response`` classes. This adds the ``Response.is_json`` and
``Response.get_json`` methods to the response to make testing JSON
response much easier. :pr:`2358`
- Removed error handler caching because it caused unexpected results
for some exception inheritance hierarchies. Register handlers
explicitly for each exception if you want to avoid traversing the
MRO. :pr:`2362`
- Fix incorrect JSON encoding of aware, non-UTC datetimes. :pr:`2374`
- Template auto reloading will honor debug mode even even if
:attr:`~Flask.jinja_env` was already accessed. :pr:`2373`
``Flask.jinja_env`` was already accessed. :pr:`2373`
- The following old deprecated code was removed. :issue:`2385`
- ``flask.ext`` - import extensions directly by their name instead
@ -660,57 +650,55 @@ Released 2018-04-26
``import flask.ext.sqlalchemy`` becomes
``import flask_sqlalchemy``.
- ``Flask.init_jinja_globals`` - extend
:meth:`Flask.create_jinja_environment` instead.
``Flask.create_jinja_environment`` instead.
- ``Flask.error_handlers`` - tracked by
:attr:`Flask.error_handler_spec`, use :meth:`Flask.errorhandler`
``Flask.error_handler_spec``, use ``Flask.errorhandler``
to register handlers.
- ``Flask.request_globals_class`` - use
:attr:`Flask.app_ctx_globals_class` instead.
- ``Flask.static_path`` - use :attr:`Flask.static_url_path`
instead.
- ``Request.module`` - use :attr:`Request.blueprint` instead.
``Flask.app_ctx_globals_class`` instead.
- ``Flask.static_path`` - use ``Flask.static_url_path`` instead.
- ``Request.module`` - use ``Request.blueprint`` instead.
- The :attr:`Request.json` property is no longer deprecated.
:issue:`1421`
- Support passing a :class:`~werkzeug.test.EnvironBuilder` or ``dict``
to :meth:`test_client.open <werkzeug.test.Client.open>`. :pr:`2412`
- The ``flask`` command and :meth:`Flask.run` will load environment
- The ``Request.json`` property is no longer deprecated. :issue:`1421`
- Support passing a ``EnvironBuilder`` or ``dict`` to
``test_client.open``. :pr:`2412`
- The ``flask`` command and ``Flask.run`` will load environment
variables from ``.env`` and ``.flaskenv`` files if python-dotenv is
installed. :pr:`2416`
- When passing a full URL to the test client, the scheme in the URL is
used instead of :data:`PREFERRED_URL_SCHEME`. :pr:`2430`
- :attr:`Flask.logger` has been simplified. ``LOGGER_NAME`` and
used instead of ``PREFERRED_URL_SCHEME``. :pr:`2430`
- ``Flask.logger`` has been simplified. ``LOGGER_NAME`` and
``LOGGER_HANDLER_POLICY`` config was removed. The logger is always
named ``flask.app``. The level is only set on first access, it
doesn't check :attr:`Flask.debug` each time. Only one format is
used, not different ones depending on :attr:`Flask.debug`. No
handlers are removed, and a handler is only added if no handlers are
already configured. :pr:`2436`
doesn't check ``Flask.debug`` each time. Only one format is used,
not different ones depending on ``Flask.debug``. No handlers are
removed, and a handler is only added if no handlers are already
configured. :pr:`2436`
- Blueprint view function names may not contain dots. :pr:`2450`
- Fix a ``ValueError`` caused by invalid ``Range`` requests in some
cases. :issue:`2526`
- The development server uses threads by default. :pr:`2529`
- Loading config files with ``silent=True`` will ignore
:data:`~errno.ENOTDIR` errors. :pr:`2581`
- Loading config files with ``silent=True`` will ignore ``ENOTDIR``
errors. :pr:`2581`
- Pass ``--cert`` and ``--key`` options to ``flask run`` to run the
development server over HTTPS. :pr:`2606`
- Added :data:`SESSION_COOKIE_SAMESITE` to control the ``SameSite``
- Added ``SESSION_COOKIE_SAMESITE`` to control the ``SameSite``
attribute on the session cookie. :pr:`2607`
- Added :meth:`~flask.Flask.test_cli_runner` to create a Click runner
that can invoke Flask CLI commands for testing. :pr:`2636`
- Added ``Flask.test_cli_runner`` to create a Click runner that can
invoke Flask CLI commands for testing. :pr:`2636`
- Subdomain matching is disabled by default and setting
:data:`SERVER_NAME` does not implicitly enable it. It can be enabled
by passing ``subdomain_matching=True`` to the ``Flask`` constructor.
``SERVER_NAME`` does not implicitly enable it. It can be enabled by
passing ``subdomain_matching=True`` to the ``Flask`` constructor.
:pr:`2635`
- A single trailing slash is stripped from the blueprint
``url_prefix`` when it is registered with the app. :pr:`2629`
- :meth:`Request.get_json` doesn't cache the result if parsing fails
when ``silent`` is true. :issue:`2651`
- :func:`Request.get_json` no longer accepts arbitrary encodings.
Incoming JSON should be encoded using UTF-8 per :rfc:`8259`, but
Flask will autodetect UTF-8, -16, or -32. :pr:`2691`
- Added :data:`MAX_COOKIE_SIZE` and :attr:`Response.max_cookie_size`
to control when Werkzeug warns about large cookies that browsers may
- ``Request.get_json`` doesn't cache the result if parsing fails when
``silent`` is true. :issue:`2651`
- ``Request.get_json`` no longer accepts arbitrary encodings. Incoming
JSON should be encoded using UTF-8 per :rfc:`8259`, but Flask will
autodetect UTF-8, -16, or -32. :pr:`2691`
- Added ``MAX_COOKIE_SIZE`` and ``Response.max_cookie_size`` to
control when Werkzeug warns about large cookies that browsers may
ignore. :pr:`2693`
- Updated documentation theme to make docs look better in small
windows. :pr:`2709`
@ -740,7 +728,7 @@ Version 0.12.3
Released 2018-04-26
- :func:`Request.get_json` no longer accepts arbitrary encodings.
- ``Request.get_json`` no longer accepts arbitrary encodings.
Incoming JSON should be encoded using UTF-8 per :rfc:`8259`, but
Flask will autodetect UTF-8, -16, or -32. :issue:`2692`
- Fix a Python warning about imports when using ``python -m flask``.
@ -810,13 +798,12 @@ Version 0.11
Released 2016-05-29, codename Absinthe
- Added support to serializing top-level arrays to
:func:`flask.jsonify`. This introduces a security risk in ancient
browsers.
- Added support to serializing top-level arrays to ``jsonify``. This
introduces a security risk in ancient browsers.
- Added before_render_template signal.
- Added ``**kwargs`` to :meth:`flask.Test.test_client` to support
passing additional keyword arguments to the constructor of
:attr:`flask.Flask.test_client_class`.
- Added ``**kwargs`` to ``Flask.test_client`` to support passing
additional keyword arguments to the constructor of
``Flask.test_client_class``.
- Added ``SESSION_REFRESH_EACH_REQUEST`` config key that controls the
set-cookie behavior. If set to ``True`` a permanent session will be
refreshed each request and get their lifetime extended, if set to
@ -826,9 +813,9 @@ Released 2016-05-29, codename Absinthe
- Made Flask support custom JSON mimetypes for incoming data.
- Added support for returning tuples in the form ``(response,
headers)`` from a view function.
- Added :meth:`flask.Config.from_json`.
- Added :attr:`flask.Flask.config_class`.
- Added :meth:`flask.Config.get_namespace`.
- Added ``Config.from_json``.
- Added ``Flask.config_class``.
- Added ``Config.get_namespace``.
- Templates are no longer automatically reloaded outside of debug
mode. This can be configured with the new ``TEMPLATES_AUTO_RELOAD``
config key.
@ -836,7 +823,7 @@ Released 2016-05-29, codename Absinthe
loader.
- Added support for explicit root paths when using Python 3.3's
namespace packages.
- Added :command:`flask` and the ``flask.cli`` module to start the
- Added ``flask`` and the ``flask.cli`` module to start the
local debug server through the click CLI system. This is recommended
over the old ``flask.run()`` method as it works faster and more
reliable due to a different design and also replaces
@ -847,7 +834,7 @@ Released 2016-05-29, codename Absinthe
an extension author to create exceptions that will by default result
in the HTTP error of their choosing, but may be caught with a custom
error handler if desired.
- Added :meth:`flask.Config.from_mapping`.
- Added ``Config.from_mapping``.
- Flask will now log by default even if debug is disabled. The log
format is now hardcoded but the default log handling can be disabled
through the ``LOGGER_HANDLER_POLICY`` configuration key.
@ -865,9 +852,7 @@ Released 2016-05-29, codename Absinthe
space included by default after separators.
- JSON responses are now terminated with a newline character, because
it is a convention that UNIX text files end with a newline and some
clients don't deal well when this newline is missing. This came up
originally as a part of
https://github.com/postmanlabs/httpbin/issues/168. :pr:`1262`
clients don't deal well when this newline is missing. :pr:`1262`
- The automatically provided ``OPTIONS`` method is now correctly
disabled if the user registered an overriding rule with the
lowercase-version ``options``. :issue:`1288`
@ -887,9 +872,9 @@ Released 2016-05-29, codename Absinthe
- Exceptions during teardown handling will no longer leave bad
application contexts lingering around.
- Fixed broken ``test_appcontext_signals()`` test case.
- Raise an :exc:`AttributeError` in :func:`flask.helpers.find_package`
with a useful message explaining why it is raised when a PEP 302
import hook is used without an ``is_package()`` method.
- Raise an ``AttributeError`` in ``helpers.find_package`` with a
useful message explaining why it is raised when a :pep:`302` import
hook is used without an ``is_package()`` method.
- Fixed an issue causing exceptions raised before entering a request
or app context to be passed to teardown handlers.
- Fixed an issue with query parameters getting removed from requests
@ -1005,12 +990,12 @@ Version 0.9
Released 2012-07-01, codename Campari
- The :func:`flask.Request.on_json_loading_failed` now returns a JSON
formatted response by default.
- The :func:`flask.url_for` function now can generate anchors to the
generated links.
- The :func:`flask.url_for` function now can also explicitly generate
URL rules specific to a given HTTP method.
- The ``Request.on_json_loading_failed`` now returns a JSON formatted
response by default.
- The ``url_for`` function now can generate anchors to the generated
links.
- The ``url_for`` function now can also explicitly generate URL rules
specific to a given HTTP method.
- Logger now only returns the debug log setting if it was not set
explicitly.
- Unregister a circular dependency between the WSGI environment and
@ -1022,42 +1007,41 @@ Released 2012-07-01, codename Campari
- Session is now stored after callbacks so that if the session payload
is stored in the session you can still modify it in an after request
callback.
- The :class:`flask.Flask` class will avoid importing the provided
import name if it can (the required first parameter), to benefit
tools which build Flask instances programmatically. The Flask class
will fall back to using import on systems with custom module hooks,
e.g. Google App Engine, or when the import name is inside a zip
archive (usually a .egg) prior to Python 2.7.
- The ``Flask`` class will avoid importing the provided import name if
it can (the required first parameter), to benefit tools which build
Flask instances programmatically. The Flask class will fall back to
using import on systems with custom module hooks, e.g. Google App
Engine, or when the import name is inside a zip archive (usually an
egg) prior to Python 2.7.
- Blueprints now have a decorator to add custom template filters
application wide, :meth:`flask.Blueprint.app_template_filter`.
application wide, ``Blueprint.app_template_filter``.
- The Flask and Blueprint classes now have a non-decorator method for
adding custom template filters application wide,
:meth:`flask.Flask.add_template_filter` and
:meth:`flask.Blueprint.add_app_template_filter`.
- The :func:`flask.get_flashed_messages` function now allows rendering
flashed message categories in separate blocks, through a
``category_filter`` argument.
- The :meth:`flask.Flask.run` method now accepts ``None`` for ``host``
and ``port`` arguments, using default values when ``None``. This
allows for calling run using configuration values, e.g.
``Flask.add_template_filter`` and
``Blueprint.add_app_template_filter``.
- The ``get_flashed_messages`` function now allows rendering flashed
message categories in separate blocks, through a ``category_filter``
argument.
- The ``Flask.run`` method now accepts ``None`` for ``host`` and
``port`` arguments, using default values when ``None``. This allows
for calling run using configuration values, e.g.
``app.run(app.config.get('MYHOST'), app.config.get('MYPORT'))``,
with proper behavior whether or not a config file is provided.
- The :meth:`flask.render_template` method now accepts a either an
iterable of template names or a single template name. Previously, it
only accepted a single template name. On an iterable, the first
template found is rendered.
- Added :meth:`flask.Flask.app_context` which works very similar to
the request context but only provides access to the current
application. This also adds support for URL generation without an
active request context.
- The ``render_template`` method now accepts a either an iterable of
template names or a single template name. Previously, it only
accepted a single template name. On an iterable, the first template
found is rendered.
- Added ``Flask.app_context`` which works very similar to the request
context but only provides access to the current application. This
also adds support for URL generation without an active request
context.
- View functions can now return a tuple with the first instance being
an instance of :class:`flask.Response`. This allows for returning
an instance of ``Response``. This allows for returning
``jsonify(error="error msg"), 400`` from a view function.
- :class:`~flask.Flask` and :class:`~flask.Blueprint` now provide a
:meth:`~flask.Flask.get_send_file_max_age` hook for subclasses to
override behavior of serving static files from Flask when using
:meth:`flask.Flask.send_static_file` (used for the default static
file handler) and :func:`~flask.helpers.send_file`. This hook is
- ``Flask`` and ``Blueprint`` now provide a ``get_send_file_max_age``
hook for subclasses to override behavior of serving static files
from Flask when using ``Flask.send_static_file`` (used for the
default static file handler) and ``helpers.send_file``. This hook is
provided a filename, which for example allows changing cache
controls by file extension. The default max-age for ``send_file``
and static files can be configured through a new
@ -1069,14 +1053,13 @@ Released 2012-07-01, codename Campari
- Changed the behavior of tuple return values from functions. They are
no longer arguments to the response object, they now have a defined
meaning.
- Added :attr:`flask.Flask.request_globals_class` to allow a specific
class to be used on creation of the :data:`~flask.g` instance of
each request.
- Added ``Flask.request_globals_class`` to allow a specific class to
be used on creation of the ``g`` instance of each request.
- Added ``required_methods`` attribute to view functions to force-add
methods on registration.
- Added :func:`flask.after_this_request`.
- Added :func:`flask.stream_with_context` and the ability to push
contexts multiple times without producing unexpected behavior.
- Added ``flask.after_this_request``.
- Added ``flask.stream_with_context`` and the ability to push contexts
multiple times without producing unexpected behavior.
Version 0.8.1
@ -1109,7 +1092,8 @@ Released 2011-09-29, codename Rakija
earlier feedback when users forget to import view code ahead of
time.
- Added the ability to register callbacks that are only triggered once
at the beginning of the first request. (``before_first_request``)
at the beginning of the first request with
``Flask.before_first_request``.
- Malformed JSON data will now trigger a bad request HTTP exception
instead of a value error which usually would result in a 500
internal server error if not handled. This is a backwards
@ -1121,20 +1105,20 @@ Released 2011-09-29, codename Rakija
version control so it's the perfect place to put configuration files
etc.
- Added the ``APPLICATION_ROOT`` configuration variable.
- Implemented :meth:`~flask.testing.TestClient.session_transaction` to
easily modify sessions from the test environment.
- Implemented ``TestClient.session_transaction`` to easily modify
sessions from the test environment.
- Refactored test client internally. The ``APPLICATION_ROOT``
configuration variable as well as ``SERVER_NAME`` are now properly
used by the test client as defaults.
- Added :attr:`flask.views.View.decorators` to support simpler
decorating of pluggable (class-based) views.
- Added ``View.decorators`` to support simpler decorating of pluggable
(class-based) views.
- Fixed an issue where the test client if used with the "with"
statement did not trigger the execution of the teardown handlers.
- Added finer control over the session cookie parameters.
- HEAD requests to a method view now automatically dispatch to the
``get`` method if no handler was implemented.
- Implemented the virtual :mod:`flask.ext` package to import
extensions from.
- Implemented the virtual ``flask.ext`` package to import extensions
from.
- The context preservation on exceptions is now an integral component
of Flask itself and no longer of the test client. This cleaned up
some internal logic and lowers the odds of runaway request contexts
@ -1167,14 +1151,13 @@ Version 0.7
Released 2011-06-28, codename Grappa
- Added :meth:`~flask.Flask.make_default_options_response` which can
be used by subclasses to alter the default behavior for ``OPTIONS``
responses.
- Unbound locals now raise a proper :exc:`RuntimeError` instead of an
:exc:`AttributeError`.
- Added ``Flask.make_default_options_response`` which can be used by
subclasses to alter the default behavior for ``OPTIONS`` responses.
- Unbound locals now raise a proper ``RuntimeError`` instead of an
``AttributeError``.
- Mimetype guessing and etag support based on file objects is now
deprecated for :func:`flask.send_file` because it was unreliable.
Pass filenames instead or attach your own etags and provide a proper
deprecated for ``send_file`` because it was unreliable. Pass
filenames instead or attach your own etags and provide a proper
mimetype by hand.
- Static file handling for modules now requires the name of the static
folder to be supplied explicitly. The previous autodetection was not
@ -1200,15 +1183,15 @@ Released 2011-06-28, codename Grappa
at the end of a request regardless of whether an exception occurred.
Also the behavior for ``after_request`` was changed. It's now no
longer executed when an exception is raised.
- Implemented :func:`flask.has_request_context`
- Implemented ``has_request_context``.
- Deprecated ``init_jinja_globals``. Override the
:meth:`~flask.Flask.create_jinja_environment` method instead to
achieve the same functionality.
- Added :func:`flask.safe_join`
``Flask.create_jinja_environment`` method instead to achieve the
same functionality.
- Added ``safe_join``.
- The automatic JSON request data unpacking now looks at the charset
mimetype parameter.
- Don't modify the session on :func:`flask.get_flashed_messages` if
there are no messages in the session.
- Don't modify the session on ``get_flashed_messages`` if there are no
messages in the session.
- ``before_request`` handlers are now able to abort requests with
errors.
- It is not possible to define user exception handlers. That way you
@ -1250,29 +1233,25 @@ Released 2010-07-27, codename Whisky
- Static rules are now even in place if there is no static folder for
the module. This was implemented to aid GAE which will remove the
static folder if it's part of a mapping in the .yml file.
- The :attr:`~flask.Flask.config` is now available in the templates as
``config``.
- ``Flask.config`` is now available in the templates as ``config``.
- Context processors will no longer override values passed directly to
the render function.
- Added the ability to limit the incoming request data with the new
``MAX_CONTENT_LENGTH`` configuration value.
- The endpoint for the :meth:`flask.Module.add_url_rule` method is now
optional to be consistent with the function of the same name on the
- The endpoint for the ``Module.add_url_rule`` method is now optional
to be consistent with the function of the same name on the
application object.
- Added a :func:`flask.make_response` function that simplifies
creating response object instances in views.
- Added a ``make_response`` function that simplifies creating response
object instances in views.
- Added signalling support based on blinker. This feature is currently
optional and supposed to be used by extensions and applications. If
you want to use it, make sure to have `blinker`_ installed.
you want to use it, make sure to have ``blinker`` installed.
- Refactored the way URL adapters are created. This process is now
fully customizable with the :meth:`~flask.Flask.create_url_adapter`
method.
fully customizable with the ``Flask.create_url_adapter`` method.
- Modules can now register for a subdomain instead of just an URL
prefix. This makes it possible to bind a whole module to a
configurable subdomain.
.. _blinker: https://pypi.org/project/blinker/
Version 0.5.2
-------------
@ -1306,8 +1285,8 @@ Released 2010-07-06, codename Calvados
templates this behavior can be changed with the ``autoescape`` tag.
- Refactored Flask internally. It now consists of more than a single
file.
- :func:`flask.send_file` now emits etags and has the ability to do
conditional responses builtin.
- ``send_file`` now emits etags and has the ability to do conditional
responses builtin.
- (temporarily) dropped support for zipped applications. This was a
rarely used feature and led to some confusing behavior.
- Added support for per-package template and static-file directories.
@ -1323,9 +1302,8 @@ Released 2010-06-18, codename Rakia
- Added the ability to register application wide error handlers from
modules.
- :meth:`~flask.Flask.after_request` handlers are now also invoked if
the request dies with an exception and an error handling page kicks
in.
- ``Flask.after_request`` handlers are now also invoked if the request
dies with an exception and an error handling page kicks in.
- Test client has not the ability to preserve the request context for
a little longer. This can also be used to trigger custom requests
that do not pop the request stack for testing.
@ -1340,8 +1318,8 @@ Version 0.3.1
Released 2010-05-28
- Fixed a error reporting bug with :meth:`flask.Config.from_envvar`
- Removed some unused code from flask
- Fixed a error reporting bug with ``Config.from_envvar``.
- Removed some unused code.
- Release does no longer include development leftover files (.git
folder for themes, built documentation in zip and pdf file and some
.pyc files)
@ -1353,9 +1331,9 @@ Version 0.3
Released 2010-05-28, codename Schnaps
- Added support for categories for flashed messages.
- The application now configures a :class:`logging.Handler` and will
log request handling exceptions to that logger when not in debug
mode. This makes it possible to receive mails on server errors for
- The application now configures a ``logging.Handler`` and will log
request handling exceptions to that logger when not in debug mode.
This makes it possible to receive mails on server errors for
example.
- Added support for context binding that does not require the use of
the with statement for playing in the console.
@ -1371,14 +1349,13 @@ Released 2010-05-12, codename J?germeister
- Various bugfixes
- Integrated JSON support
- Added :func:`~flask.get_template_attribute` helper function.
- :meth:`~flask.Flask.add_url_rule` can now also register a view
function.
- Added ``get_template_attribute`` helper function.
- ``Flask.add_url_rule`` can now also register a view function.
- Refactored internal request dispatching.
- Server listens on 127.0.0.1 by default now to fix issues with
chrome.
- Added external URL support.
- Added support for :func:`~flask.send_file`
- Added support for ``send_file``.
- Module support and internal request handling refactoring to better
support pluggable applications.
- Sessions can be set to be permanent now on a per-session basis.

2
docs/conf.py
View file

@ -29,7 +29,7 @@ intersphinx_mapping = {
"itsdangerous": ("https://itsdangerous.palletsprojects.com/", None),
"sqlalchemy": ("https://docs.sqlalchemy.org/", None),
"wtforms": ("https://wtforms.readthedocs.io/", None),
"blinker": ("https://pythonhosted.org/blinker/", None),
"blinker": ("https://blinker.readthedocs.io/", None),
}
issues_github_path = "pallets/flask"