Add ir.message and use custom exceptions

issue3672

message.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0"?>
+<!-- This file is part of Tryton.  The COPYRIGHT file at the top level of
+this repository contains the full copyright notices and license terms. -->
+<tryton>
+    <data group="1">
+        <record model="ir.message" id="msg_ldap_user_change_password">
+            <field name="text">You cannot change the password of LDAP user "%(user)s".</field>
+        </record>
+    </data>
+</tryton>

res.py

@@ -6,6 +6,8 @@ import urllib.parse
 import ldap3
 from ldap3.core.exceptions import LDAPException
 
+from trytond.i18n import gettext
+from trytond.model.exceptions import AccessError
 from trytond.transaction import Transaction
 from trytond.pool import PoolMeta
 from trytond.config import config, parse_uri
@@ -51,14 +53,6 @@ def ldap_server():
 class User(metaclass=PoolMeta):
     __name__ = 'res.user'
 
-    @classmethod
-    def __setup__(cls):
-        super(User, cls).__setup__()
-        cls._error_messages.update({
-                'set_passwd_ldap_user': (
-                    'You can not set the password of ldap user "%s".'),
-                })
-
     @staticmethod
     def ldap_search_user(login, server, attrs=None):
         '''
@@ -109,7 +103,9 @@ class User(metaclass=PoolMeta):
         except LDAPException:
             logger.error('LDAPError when checking password', exc_info=True)
         if find:
-            cls.raise_user_error('set_passwd_ldap_user', (login,))
+            raise AccessError(
+                gettext('ldap_authentication.msg_ldap_user_change_password',
+                    user=login))
 
     @classmethod
     def create(cls, vlist):

tryton.cfg

@@ -3,3 +3,5 @@ version=5.1.0
 depends:
     ir
     res
+xml:
+    message.xml