[ADD] module board_eval_context

This module adds some useful keys in the evaluation context of board.board
records, which can be useful when creating generic boards for all the users of
an instance.

At the moment it allows using the following values in the domains of a board.board record:

* datetime: the datetime.datetime class
* date: the datetime.date class
* timedelta: the datetime.timedelta class
* timezone: the datetime.timezone class
* tzinfo: the datetime.tzinfo class
* relativedelta: the dateutil.relativedelta.relativedelta class
* uid: the ID of the current user

board_eval_context/models/__init__.py

@@ -0,0 +1 @@
+from . import board_board

board_eval_context/models/board_board.py

@@ -0,0 +1,48 @@
+# Copyright 2021-2023 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+import datetime
+
+from dateutil.relativedelta import relativedelta
+
+from odoo import api, models
+from odoo.tools.safe_eval import safe_eval
+
+
+class Board(models.AbstractModel):
+    _inherit = "board.board"
+
+    def _get_eval_context(self):
+        """Prepare the context used when evaluating python code
+        :returns: dict -- evaluation context given to safe_eval
+        """
+        return {
+            "datetime": datetime.datetime,
+            "date": datetime.date,
+            "timedelta": datetime.timedelta,
+            "timezone": datetime.timezone,
+            "tzinfo": datetime.tzinfo,
+            "relativedelta": relativedelta,
+            "uid": self.env.uid,
+        }
+
+    @api.model
+    def _arch_preprocessing(self, arch):
+        # keeping it inside the method as in the
+        # original code, for perf reason at startup
+        from lxml import etree
+
+        arch = super()._arch_preprocessing(arch)
+        eval_context = self._get_eval_context()
+
+        def fix_domain(node):
+            for child in node.iterchildren():
+                if child.tag == "action" and child.get("domain"):
+                    domain = safe_eval(child.get("domain"), eval_context)
+                    child.set("domain", str(domain))
+                else:
+                    fix_domain(child)
+            return node
+
+        archnode = etree.fromstring(arch)
+        archnode = fix_domain(archnode)
+        return etree.tostring(archnode, pretty_print=True, encoding="unicode")