Purnendu Singh (OpenERP) has proposed merging 
lp:~openerp-dev/openobject-addons/trunk-improve_binaryfield-vja into 
lp:openobject-addons.

Requested reviews:
  OpenERP Core Team (openerp)

For more details, see:
https://code.launchpad.net/~openerp-dev/openobject-addons/trunk-improve_binaryfield-vja/+merge/127709

Hello,

Remove _rec_name.
Update the ir_attachments form view and added a on_change method to update the 
name field based on attached document.

Thanks,
Purnendu Singh
-- 
https://code.launchpad.net/~openerp-dev/openobject-addons/trunk-improve_binaryfield-vja/+merge/127709
Your team OpenERP R&D Team is subscribed to branch 
lp:~openerp-dev/openobject-addons/trunk-improve_binaryfield-vja.
=== modified file 'document/document.py'
--- document/document.py	2012-10-02 10:29:15 +0000
+++ document/document.py	2012-10-03 10:38:23 +0000
@@ -36,7 +36,6 @@
 
 class document_file(osv.osv):
     _inherit = 'ir.attachment'
-    _rec_name = 'datas_fname'
 
 
     def _attach_parent_id(self, cr, uid, ids=None, context=None):
@@ -149,7 +148,14 @@
     _sql_constraints = [
         # filename_uniq is not possible in pure SQL
     ]
-    def _check_duplication(self, cr, uid, vals, ids=None, op='create'):
+
+    def onchange_file(self, cr, uid, ids, datas_fname=False, context=None):
+        res = {'value':{}}
+        if datas_fname:
+            res['value'].update({'name': datas_fname})
+        return res
+
+    def _check_duplication(self, cr, uid, vals, ids=[], op='create'):
         name = vals.get('name', False)
         parent_id = vals.get('parent_id', False)
         res_model = vals.get('res_model', False)

=== modified file 'document/document_view.xml'
--- document/document_view.xml	2012-08-13 16:06:57 +0000
+++ document/document_view.xml	2012-10-03 10:38:23 +0000
@@ -228,6 +228,9 @@
         <field name="priority" eval="1"/>
         <field name="inherit_id" ref="base.view_attachment_form"/>
         <field name="arch" type="xml">
+            <xpath expr="//field[@name='datas_fname']" position="replace">
+                <field name="datas_fname" invisible="1" on_change="onchange_file(datas_fname)"/>
+            </xpath>
             <field name="url" position="after">
                 <field name="user_id"/>
             </field>
@@ -338,15 +341,6 @@
         <field name="value" eval="'ir.actions.act_window,%d'%action_document_file_directory_form"/>
     </record>
 
-    <record model="ir.ui.view" id="view_attachment_form_inherit">
-        <field name="name">ir.attachment.view.inherit</field>
-        <field name="model">ir.attachment</field>
-        <field name="inherit_id" ref="base.view_attachment_form"/>
-        <field name="arch" type="xml">
-            <field name="datas_fname" position = "replace" >
-            </field>
-        </field>
-    </record>
 
     <record model="ir.ui.view" id="view_process_node_form_inherit1">
         <field name="name">process.node.form</field>

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