Manage field context on Group value

issue4098
review11391004

CHANGELOG

@@ -1,3 +1,4 @@
+* Manage field context on Group value
 * Add export of selection string
 * Load plugins from local user directory
 * Manage tree_state attribute

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

@@ -40,6 +40,7 @@ class Field(object):
         record.on_change([self.name])
         record.on_change_with([self.name])
         record.autocomplete_with(self.name)
+        record.set_field_context()
 
     def domains_get(self, record):
         screen_domain = domain_inversion(record.group.domain4inversion,
@@ -444,7 +445,6 @@ class O2MField(Field):
     def __init__(self, attrs):
         super(O2MField, self).__init__(attrs)
         self.in_on_change = False
-        self.context = {}
 
     def sig_changed(self, record):
         if not self.in_on_change:
@@ -479,11 +479,12 @@ class O2MField(Field):
         from group import Group
         parent_name = self.attrs.get('relation_field', '')
         fields = fields or {}
+        context = record.expr_eval(self.attrs.get('context', {}))
         group = Group(self.attrs['relation'], fields,
                 parent=record,
                 parent_name=parent_name,
                 child_name=self.name,
-                context=self.context,
+                context=context,
                 parent_datetime_field=self.attrs.get('datetime_field'))
         if not fields and record.model_name == self.attrs['relation']:
             group.fields = record.group.fields

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

@@ -243,7 +243,8 @@ class Group(SignalEvent, list):
         self.current_idx = 0
         return True
 
-    def _get_context(self):
+    @property
+    def context(self):
         ctx = self._context.copy()
         if self.parent:
             ctx.update(self.parent.context_get())
@@ -256,7 +257,9 @@ class Group(SignalEvent, list):
                 )[self.parent_datetime_field]
         return ctx
 
-    context = property(_get_context)
+    @context.setter
+    def context(self, value):
+        self._context = value.copy()
 
     def add(self, record, position=-1, signal=True):
         if record.group is not self:

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

@@ -600,6 +600,16 @@ class Record(SignalEvent):
             res = []
         self.autocompletion[fieldname] = res
 
+    def set_field_context(self):
+        from .group import Group
+        for name, field in self.group.fields.iteritems():
+            value = self.value.get(name)
+            if not isinstance(value, Group):
+                continue
+            context = field.attrs.get('context')
+            if context:
+                value.context = self.expr_eval(context)
+
     def get_attachment_count(self, reload=False):
         if self.id < 0:
             return 0