[server] prevent returning closed cursor to the database pool
In since c8c6ad8 init_repository use repo.internal_cnx() instead of
repo.system_source.get_connection() so it use the pool and we should not close
cursors from the pool before returning it back. Otherwise we may have
"connection already closed" error.
This bug only trigger when connection-pool-size = 1. Since we are moving to use
a dynamic pooler we need to get this fixed.
This does not occur with sqlite since the connection wrapper instantiate new
cursor everytime, but this occur with other databases.
.. _ajax:
Ajax
----
.. warning::
This approach is deprecated in favor of using
`cwclientlibjs <https://www.npmjs.com/package/@logilab/cwclientlibjs>`_.
If your use react for your UI, try the react components from the
`cwelements <https://www.npmjs.com/package/@logilab/cwelements>`_ library.
The documentation is kept here as reference.
For historical reference of what Ajax is and used to be, one can read the
`wikipedia article about Ajax <https://en.wikipedia.org/wiki/Ajax_(programming)>`_.
CubicWeb provides a few helpers to facilitate *javascript <-> python* communications.
You can, for instance, register some python functions that will become
callable from javascript through ajax calls. All the ajax URLs are handled
by the :class:`cubicweb.web.views.ajaxcontroller.AjaxController` controller.
.. automodule:: cubicweb.web.views.ajaxcontroller