Add common date_format to fallback to rpc context format

Since issue6082, the rpc context locale date format is no more set in the
group context.

issue7071
review40971002

tryton/common/common.py

@@ -1430,3 +1430,7 @@ def ellipsize(string, length):
         return string
     ellipsis = _('...')
     return string[:length - len(ellipsis)] + ellipsis
+
+
+def date_format(format_):
+    return format_ or rpc.CONTEXT.get('locale', {}).get('date', '%x')

tryton/gui/window/view_form/model/field.py

@@ -230,7 +230,7 @@ class DateTimeField(Field):
 
     def date_format(self, record):
         context = self.get_context(record)
-        return context.get('date_format', '%x')
+        return common.date_format(context.get('date_format'))
 
     def time_format(self, record):
         return record.expr_eval(self.attrs['format'])
@@ -249,7 +249,7 @@ class DateField(Field):
 
     def date_format(self, record):
         context = self.get_context(record)
-        return context.get('date_format', '%x')
+        return common.date_format(context.get('date_format'))
 
 
 class TimeField(Field):
@@ -956,7 +956,7 @@ class DictField(Field):
 
     def date_format(self, record):
         context = self.get_context(record)
-        return context.get('date_format', '%x')
+        return common.date_format(context.get('date_format'))
 
     def time_format(self, record):
         return '%X'

tryton/gui/window/view_form/screen/screen.py

@@ -129,8 +129,6 @@ class Screen(SignalEvent):
         self.search_value = attributes.get('search_value')
         self.fields_view_tree = {}
         self.order = self.default_order = attributes.get('order')
-        self.__date_format = self.context.get(
-            'date_format', rpc.CONTEXT.get('locale', {}).get('date', '%x'))
         self.view_to_load = []
         self._domain_parser = {}
         self.pre_validate = False
@@ -335,10 +333,6 @@ class Screen(SignalEvent):
     def context(self):
         return self.group.context
 
-    @property
-    def date_format(self):
-        return self.__date_format
-
     def __get_group(self):
         return self.__group
 

tryton/gui/window/view_form/view/form_gtk/calendar.py

@@ -8,6 +8,7 @@ import gettext
 import gobject
 
 from .widget import Widget
+from tryton import common
 from tryton.common.datetime_ import (Date as DateEntry, Time as TimeEntry,
     DateTime as DateTimeEntry, add_operators)
 from tryton.common.widget_style import set_widget_style
@@ -73,7 +74,8 @@ class Date(Widget):
         if field and record:
             format_ = field.date_format(record)
         else:
-            format_ = self.view.screen.date_format
+            format_ = common.date_format(
+                self.view.screen.context.get('date_format'))
         self.entry.props.format = format_
 
     def display(self, record, field):
@@ -161,7 +163,8 @@ class DateTime(Date):
             date_format = field.date_format(record)
             time_format = field.time_format(record)
         else:
-            date_format = self.view.screen.date_format
+            date_format = common.date_format(
+                self.view.screen.context.get('date_format'))
             time_format = '%X'
         self.entry.props.date_format = date_format
         self.entry.props.time_format = time_format

tryton/gui/window/view_form/view/screen_container.py

@@ -556,7 +556,8 @@ class ScreenContainer(object):
                     entry = Selection(selections)
                     yoptions = gtk.FILL | gtk.EXPAND
                 elif field['type'] in ('date', 'datetime', 'time'):
-                    date_format = self.screen.context.get('date_format', '%x')
+                    date_format = common.date_format(
+                        self.screen.context.get('date_format'))
                     if field['type'] == 'date':
                         entry = Dates(date_format)
                     elif field['type'] in ('datetime', 'time'):