[IMP] BaseModel: new `_translate` attribute to disable translations

Can be defined to False in any model to completely
disable translations for this model, when they are
irrelevant. This is useful e.g. for test classes
that use attributes that would normally be translatable.

openerp/models.py

@@ -295,6 +295,7 @@ class BaseModel(object):
     _sequence = None
     _description = None
     _needaction = False
+    _translate = True # set to False to disable translations export for this model
 
     # dict of {field:method}, with method returning the (name_get of records, {id: fold})
     # to include in the _read_group, if grouped on this field

openerp/tools/translate.py

@@ -668,6 +668,10 @@ def trans_generate(lang, modules, cr):
             _logger.error("Unable to find object %r", model)
             continue
 
+        if not registry[model]._translate:
+            # explicitly disabled
+            continue
+
         exists = registry[model].exists(cr, uid, res_id)
         if not exists:
             _logger.warning("Unable to find object %r with id %d", model, res_id)
@@ -688,7 +692,8 @@ def trans_generate(lang, modules, cr):
                 _logger.error("name error in %s: %s", xml_name, str(exc))
                 continue
             objmodel = registry.get(obj.model)
-            if objmodel is None or field_name not in objmodel._columns:
+            if (objmodel is None or field_name not in objmodel._columns
+                    or not objmodel._translate):
                 continue
             field_def = objmodel._columns[field_name]