[MERGE] forward port of branch 8.0 up to 0aab81c

1 files changed, 10 insertions, 2 deletions

diff --git a/openerp/fields.py b/openerp/fields.py
index b16151176a6..030872c0092 100644
--- a/openerp/fields.py
+++ b/openerp/fields.py
@@ -460,7 +460,8 @@ class Field(object):
         # determine dependencies, compute, inverse, and search
         self.depends = ('.'.join(self.related),)
         self.compute = self._compute_related
-        self.inverse = self._inverse_related
+        if not (self.readonly or field.readonly):
+            self.inverse = self._inverse_related
         if field._description_searchable:
             # allow searching on self only if the related field is searchable
             self.search = self._search_related
@@ -1751,6 +1752,14 @@ class Many2many(_RelationalMulti):
     _column_limit = property(attrgetter('limit'))
 
 
+class Serialized(Field):
+    """ Minimal support for existing sparse and serialized fields. """
+    type = 'serialized'
+
+    def convert_to_cache(self, value, record, validate=True):
+        return value or {}
+
+
 class Id(Field):
     """ Special case for field 'id'. """
     store = True
@@ -1774,7 +1783,6 @@ class Id(Field):
     def __set__(self, record, value):
         raise TypeError("field 'id' cannot be assigned")
 
-
 # imported here to avoid dependency cycle issues
 from openerp import SUPERUSER_ID
 from .exceptions import Warning, AccessError, MissingError