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[Security] description for special role ROLE_PREVIOUS_ADMIN #1966

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Nov 26, 2012
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[Security] description for special role ROLE_PREVIOUS_ADMIN #1966

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18 changes: 18 additions & 0 deletions book/security.rst
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Expand Up @@ -1644,6 +1644,24 @@ To switch back to the original user, use the special ``_exit`` username:

http://example.com/somewhere?_switch_user=_exit

During impersonation the user is provided with a special role called
``ROLE_PREVIOUS_ADMIN``. In a template, for instance, this role can decide
if a link to exit impersonation needs to be shown:

.. configuration-block::

.. code-block:: html+jinja

{% if is_granted('ROLE_PREVIOUS_ADMIN') %}
<a href="{{ path('homepage', {_switch_user: '_exit'}) }}">Exit impersonation</a>
{% endif %}

.. code-block:: html+php

<?php if ($view['security']->isGranted('ROLE_PREVIOUS_ADMIN')): ?>
<a href="<?php echo $view['router']->generate('homepage', array('_switch_user' => '_exit') ?>">Exit impersonation</a>
<?php endif; ?>

Of course, this feature needs to be made available to a small group of users.
By default, access is restricted to users having the ``ROLE_ALLOWED_TO_SWITCH``
role. The name of this role can be modified via the ``role`` setting. For
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