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_late_productions">
+            <field name="text">There are some productions that are late.</field>
+        </record>
+    </data>
+</tryton>

stock.py

@@ -2,10 +2,13 @@
 # this repository contains the full copyright notices and license terms.
 import datetime
 
+from trytond.i18n import gettext
 from trytond.pyson import Eval, If
 from trytond.pool import PoolMeta, Pool
 from trytond.wizard import StateAction
 
+from trytond.modules.stock_supply.exceptions import SupplyWarning
+
 __all__ = ['OrderPoint', 'LocationLeadTime', 'StockSupply']
 
 
@@ -69,13 +72,6 @@ class StockSupply(metaclass=PoolMeta):
 
     production = StateAction('stock_supply_production.act_production_request')
 
-    @classmethod
-    def __setup__(cls):
-        super(StockSupply, cls).__setup__()
-        cls._error_messages.update({
-                'late_productions': 'There are some late productions.',
-                })
-
     @classmethod
     def types(cls):
         return super(StockSupply, cls).types() + ['production']
@@ -84,6 +80,7 @@ class StockSupply(metaclass=PoolMeta):
         pool = Pool()
         Date = pool.get('ir.date')
         Move = pool.get('stock.move')
+        Warning = pool.get('res.user.warning')
         today = Date.today()
         if Move.search([
                     ('from_location.type', '=', 'production'),
@@ -91,8 +88,11 @@ class StockSupply(metaclass=PoolMeta):
                     ('state', '=', 'draft'),
                     ('planned_date', '<', today),
                     ], order=[]):
-            self.raise_user_warning('%s@%s' % (self.__name__, today),
-                'late_productions')
+            key = '%s@%s' % (self.__name__, today)
+            if Warning.check(key):
+                raise SupplyWarning(
+                    key,
+                    gettext('stock_supply_production.msg_late_productions'))
         return super(StockSupply, self).transition_create_()
 
     @property

tryton.cfg

@@ -9,3 +9,4 @@ depends:
 xml:
     production.xml
     stock.xml
+    message.xml