[FIX] openerp: Field One2many child propagation on NewId dict

If exist an one2many field as child of another field, this one2many get only
empty lines and Javascript dataset set wrong referid, causing a bad query with
False values and 'one2many_v_id'$ as inverse_id.

This PR adetect on convert_to_change if field is one2many and fnames = None,
in case True, set fnames with one2many model's fields

This commit closes #12249, closes #11236

Courtsey of @rco-odoo for review

openerp/addons/test_new_api/tests/test_onchange.py

@@ -307,7 +307,12 @@ class TestOnChange(common.TransactionCase):
 
         # When one2many domain contains non-computed field, things are ok
         self.assertEqual(result['value']['important_messages'],
-                         [(5,)] + [(4, msg.id) for msg in discussion.important_messages])
+                         [(5,)] + [(1, msg.id, {
+                                    'name': msg.name,
+                                    'body': msg.body,
+                                    'author': (msg.author.id, msg.author.display_name),
+                                    'size': msg.size
+                                    }) for msg in discussion.important_messages])
 
         # But here with commit 5676d81, we get value of: [(2, email.id)]
         self.assertEqual(

openerp/fields.py

@@ -1915,9 +1915,8 @@ class One2many(_RelationalMulti):
     _column_limit = property(attrgetter('limit'))
 
     def convert_to_onchange(self, value, fnames=None):
-        if fnames:
+        fnames = set(fnames or value.fields_view_get()['fields'])
-            # do not serialize self's inverse field
+        fnames.discard(self.inverse_name)
-            fnames = [name for name in fnames if name != self.inverse_name]
         return super(One2many, self).convert_to_onchange(value, fnames)