6/1/2023 0 Comments Pip3 update allUsed the previously undocumented session support we urge you to upgrade. The session system into a new module called ssions. With that introduction we moved the implementation details for Implements sessions and ssion which is the global session There was a naming collision between ssion the module that The request context stack will make extensions more readily handle use casesįlask introduced a new session interface system. For instance, the app context stack makes sense forĮxtensions which connect to databases. If you maintain an extension that was using _request_ctx_stackīefore, please consider changing to _app_ctx_stack if it makes The old behavior, you can add it easily by subclassing Flask:Ĭlass TraditionalFlask ( Flask ): def make_response ( self, rv ): if isinstance ( rv, tuple ): return self. ![]() You’re creating, it’s now always a tuple in the form (response, status, headers) where at least one item has to be provided. Return a tuple it no longer defines the arguments for the response object The behavior of returning tuples from a function was simplified. The oldį_globals_class attribute was renamed toį_ctx_globals_class. When there is no request context yet but an application context. This change should be transparentįor you but it means that you now can store things on the g object The old session system by using the Flask-OldSessions extension.įlask also started storing the flask.g object on the applicationĬontext instead of the request context. In order to not break people’s sessions it is possible to continue using The new sessions areīy design much more restricted to only allow JSON with a few smallĮxtensions for tuples and strings with HTML markup. Only store a limited amount of types in the session. Sessions that were issued before the upgrade are invalidated and you can When you upgrade you will notice two major changes: all This change hasīeen done in order to avoid the damage an attacker can do if the secret The biggest change going from 0.9 to 0.10 is that the cookie serializationįormat changed from pickle to a specialized JSON format. We also provide a migration utility called flask-ext-migrate that is supposed toĪutomatically rewrite your imports for this. The old form still works, but Flask will issue aį for each extension you import the old Extension imports ¶Įxtension imports of the form are deprecated, you should use The render_template_string() function has changed toĪutoescape template variables by default. Handlers only using exception classes and HTTP error codes. This was unintended and plain wrong,Īnd therefore was replaced with the intended behavior of registering There used to be a logic error allowing you to register handlers ![]() Trying to register a handler on an instance now raises ValueError. Specific exception classes are executed instead of more general ones. Now the inheritance hierarchy takes precedence and handlers for more The precedence of handlers used to be based on the decoration/call order of ![]() The behavior of error handlers was changed. Instead the new LOGGER_HANDLER_POLICY configuration canīe used to disable the default log handlers and custom log handlers can be Debugging ¶įlask 0.11 removed the debug_log_format attribute from FlaskĪpplications. You need to use the environment variable to specify an application. In case you did track the master branch you will notice that The master branch which was 1.0 you might see some unexpected changes. To the release we decided to push out a 0.11 release first with someĬhanges removed to make the transition easier. However because there was such a long lead time up Version 0.11 ¶Ġ.11 is an odd release in the Flask release cycle because it was supposed If Flask can’t guess one or the user didn’t provide one, theįunction fails if no filename information was provided. Silently swallowing errors in such cases was notĪdditionally the default of falling back to application/octet-stream hasīeen restricted. The reason for this is that some file-like objects have an invalid or even ) # Set `attachment_filename` for MIME-type guessing # ETag still needs to be manually set response = send_file ( open ( fname ), attachment_filename = fname ) response. Fname = '/path/to/file.txt' # Just pass the filepath directly response = send_file ( fname ) # Set the MIME-type and ETag explicitly response = send_file ( open ( fname ), mimetype = 'text/plain' ) response.
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