Always include changed field when calling on_change_with

Since d142b33fa3ab the on_change_with relies on _changed_value.
So in order to correctly detect if a xxx2Many field has some record removed,
we need to have the value of the client.

Closes #12837
(grafted from ae091a6bacbcaba5d327c6573b3859ab0d59e070)

--HG--
branch : 7.0

proteus/proteus/__init__.py

@@ -1169,7 +1169,7 @@ class Model(object):
                 later.add(field)
                 continue
             to_change.add(field)
-            values.update(self._on_change_args(on_change_with))
+            values.update(self._on_change_args(on_change_with + [field]))
         if to_change:
             context = self._context
             changes = getattr(self._proxy, 'on_change_with')(values,
@@ -1179,7 +1179,7 @@ class Model(object):
             values = {}
             for field in later:
                 on_change_with = self._fields[field]['on_change_with']
-                values.update(self._on_change_args(on_change_with))
+                values.update(self._on_change_args(on_change_with + [field]))
             context = self._context
             changes = getattr(self._proxy, 'on_change_with')(
                 values, list(later), context)

sao/src/model.js

@@ -1128,7 +1128,8 @@
                 }
                 fieldnames[fieldname] = true;
                 values = jQuery.extend(values,
-                        this._get_on_change_args(on_change_with));
+                    this._get_on_change_args(
+                        on_change_with.concat([fieldname])));
                 if ((this.model.fields[fieldname] instanceof
                             Sao.field.Many2One) ||
                         (this.model.fields[fieldname] instanceof
@@ -1167,7 +1168,8 @@
                         .description.on_change_with;
                     values = jQuery.extend(
                         values,
-                        this._get_on_change_args(on_change_with));
+                        this._get_on_change_args(
+                            on_change_with.concat([fieldname])));
                 }
                 fieldnames = Object.keys(later);
                 try {

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

@@ -622,7 +622,8 @@ class Record:
                 later.add(fieldname)
                 continue
             fieldnames.add(fieldname)
-            values.update(self._get_on_change_args(on_change_with))
+            values.update(
+                self._get_on_change_args(on_change_with + [fieldname]))
             if isinstance(self.group.fields[fieldname], (fields.M2OField,
                         fields.ReferenceField)):
                 self.value.pop(fieldname + '.', None)
@@ -647,7 +648,8 @@ class Record:
             for fieldname in later:
                 on_change_with = self.group.fields[fieldname].attrs.get(
                         'on_change_with')
-                values.update(self._get_on_change_args(on_change_with))
+                values.update(
+                    self._get_on_change_args(on_change_with + [fieldname]))
             try:
                 if len(later) == 1 or 'id' not in values:
                     changed = {}