diff --git a/app_base_chinese/views/res_partner_views.xml b/app_base_chinese/views/res_partner_views.xml
index 440ceab3..297978e4 100644
--- a/app_base_chinese/views/res_partner_views.xml
+++ b/app_base_chinese/views/res_partner_views.xml
@@ -147,7 +147,7 @@
                 <xpath expr="//templates" position="before">
                     <field name="credit_limit"/>
                 </xpath>
-                <xpath expr="//div[@class='oe_kanban_details']/ul" position="inside">
+                <xpath expr="//div[hasclass('oe_kanban_details')]/ul" position="inside">
                     <li t-if="record.credit_limit and record.credit_limit.raw_value">
                         Credit：<field name="credit_limit"/>
                     </li>
diff --git a/app_common/models/__init__.py b/app_common/models/__init__.py
index c6153ef1..736cc270 100644
--- a/app_common/models/__init__.py
+++ b/app_common/models/__init__.py
@@ -22,4 +22,4 @@
 # http://www.sunpop.cn/odoo10_developer_document_offline/
 # description:
 
-from . import models
+from . import base
diff --git a/app_common/models/base.py b/app_common/models/base.py
new file mode 100644
index 00000000..1639cde7
--- /dev/null
+++ b/app_common/models/base.py
@@ -0,0 +1,16 @@
+# -*- coding: utf-8 -*-
+from odoo import models, fields, api, _
+
+
+class Base(models.AbstractModel):
+    _inherit = 'base'
+
+    @api.model
+    def _app_get_m2o_default(self, fieldname, domain=[]):
+        if hasattr(self, fieldname) and self._fields[fieldname].type == 'many2one':
+            if self._context.get(fieldname) or self._context.get('default_%s' % fieldname):
+                return self._context.get(fieldname) or self._context.get('default_%s' % fieldname)
+            else:
+                rec = self.env[self._fields[fieldname].comodel_name].search(domain, limit=1)
+                return rec.id if rec else False
+        return False
diff --git a/app_common/models/models.py b/app_common/models/models.py
deleted file mode 100644
index 965f1a38..00000000
--- a/app_common/models/models.py
+++ /dev/null
@@ -1,25 +0,0 @@
-# -*- coding: utf-8 -*-
-from odoo import models, fields, api, _
-
-
-class BaseModelExtend(models.AbstractModel):
-    _name = 'basemodel.extend'
-    _description = 'Base Extend for Sunpop'
-
-    def _register_hook(self):
-        '''
-        Register method in BaseModel
-        如果 该 fieldname 是m2o的，那么如果context没值，就用该模型第一个
-        '''
-        @api.model
-        def _app_get_m2o_default(self, fieldname):
-            if hasattr(self, fieldname) and self._fields[fieldname].type == 'many2one':
-                if self._context.get(fieldname) or self._context.get('default_%s' % fieldname):
-                    return self._context.get(fieldname) or self._context.get('default_%s' % fieldname)
-                else:
-                    rec = self.env[self._fields[fieldname].comodel_name].search([], limit=1)
-                    return rec.id if rec else False
-            return False
-
-        models.BaseModel._app_get_default = _app_get_m2o_default
-        return super(BaseModelExtend, self)._register_hook()