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Added a note about using slashes and the special _format param #9165

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Jan 30, 2018
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Added a note about using slashes and the special _format param #9165

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9 changes: 9 additions & 0 deletions routing/slash_in_parameter.rst
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Expand Up @@ -77,6 +77,15 @@ a more permissive regular expression for it:

That's it! Now, the ``{token}`` parameter can contain the ``/`` character.

.. note::

If the route includes the special ``{_format}`` placeholder, you shouldn't
use the ``.+`` requirement for the parameters that allow slashes. For example,
if the pattern is ``/share/{token}.{_format}`` and ``{token}`` allows any
character, the ``/share/foo/bar.json`` URL will consider ``foo/bar.json``
as the token and the format will be empty. This can be solved replacing the
``.+`` requirement by ``[^.]+`` to allow any character except dots.

.. note::

If the route defines several placeholders and you apply this permissive
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