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Classe « Flask »

Méthode flask.Flask.url_for

Signature de la méthode url_for

def url_for(self, /, endpoint: 'str', *, _anchor: 'str | None' = None, _method: 'str | None' = None, _scheme: 'str | None' = None, _external: 'bool | None' = None, **values: 't.Any') -> 'str' 

Description

help(Flask.url_for)

Generate a URL to the given endpoint with the given values.

This is called by :func:`flask.url_for`, and can be called
directly as well.

An *endpoint* is the name of a URL rule, usually added with
:meth:`@app.route() <route>`, and usually the same name as the
view function. A route defined in a :class:`~flask.Blueprint`
will prepend the blueprint's name separated by a ``.`` to the
endpoint.

In some cases, such as email messages, you want URLs to include
the scheme and domain, like ``https://example.com/hello``. When
not in an active request, URLs will be external by default, but
this requires setting :data:`SERVER_NAME` so Flask knows what
domain to use. :data:`APPLICATION_ROOT` and
:data:`PREFERRED_URL_SCHEME` should also be configured as
needed. This config is only used when not in an active request.

Functions can be decorated with :meth:`url_defaults` to modify
keyword arguments before the URL is built.

If building fails for some reason, such as an unknown endpoint
or incorrect values, the app's :meth:`handle_url_build_error`
method is called. If that returns a string, that is returned,
otherwise a :exc:`~werkzeug.routing.BuildError` is raised.

:param endpoint: The endpoint name associated with the URL to
    generate. If this starts with a ``.``, the current blueprint
    name (if any) will be used.
:param _anchor: If given, append this as ``#anchor`` to the URL.
:param _method: If given, generate the URL associated with this
    method for the endpoint.
:param _scheme: If given, the URL will have this scheme if it
    is external.
:param _external: If given, prefer the URL to be internal
    (False) or require it to be external (True). External URLs
    include the scheme and domain. When not in an active
    request, URLs are external by default.
:param values: Values to use for the variable parts of the URL
    rule. Unknown keys are appended as query string arguments,
    like ``?a=b&c=d``.

.. versionadded:: 2.2
    Moved from ``flask.url_for``, which calls this method.

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