[ADD] ir_actions: added documentation

bzr revid: tde@openerp.com-20130726101545-o4mtnaz18cni4pm3

doc/ir_actions.rst

@@ -0,0 +1,48 @@
+.. _ir-actions:
+
+Ir Actions
+===========
+
+.. _ir-actions-server:
+
+Server actions
+++++++++++++++
+
+.. versionchanged:: 8.0
+
+.. currentmodule:: openerp.addons.base.ir.ir_actions
+
+.. autoclass:: actions_server
+  :noindex:
+
+Adding a new sever action
+-------------------------
+
+The ``state`` field holds the various available types of server action. In order
+to add a new server action, the first thing to do is to override the ``_get_states``
+method that returns the list of values available for the selection field.
+
+.. automethod:: actions_server._get_states
+  :noindex:
+
+The method called when executing the server action is the ``run`` method. This
+method calls ``run_action_<STATE>``. When adding a new server action type, you
+have to define the related method that will be called upon execution.
+
+.. automethod:: actions_server.run
+  :noindex:
+
+Changelog
+---------
+
+`8.0`
+'''''
+
+The refactoring of OpenERP 8.0 server actions removed the following types of
+server action:
+
+ - ``loop``: can be replaced by a ``code`` action
+ - ``dummy``: can be replaced by a void ``code`` action
+ - ``object_create`` and ``object_copy`` have been merged into a single and
+   more understandable ``object_create`` action
+ - ``other`` is renamed ``multi`` and raises in case of loops