[IMP] composer: attachments are attached to the mail.compose.message record, not the related document anymore. This way, when deleting the mail.compose.message, attachments will be unlinked. Added deletion cascaded to res_model and res_id = 0, because of attachments added on a not-already-saved composer. BTW, cleaned mail/__openerp__.py.

bzr revid: tde@openerp.com-20120906134201-8845xov0mjbxh8mr

addons/mail/__openerp__.py

@@ -30,27 +30,27 @@ A business oriented Social Networking with a fully-integrated email and message
 ===========================================================================================
 
 The Social Networking module provides an unified social network
-abstraction layer allowing applications to display a complete 
+abstraction layer allowing applications to display a complete
 communication history on documents. It gives the users the possibility
 to read and send messages and emails in an unified way.
 
-It also provides a feeds page combined to a subscription mechanism, that 
+It also provides a feeds page combined to a subscription mechanism, that
 allows to follow documents, and to be constantly updated about recent
 news.
-        
+
 The main features of the module are:
 ------------------------------------
     * a clean and renewed communication history for any OpenERP
       document that can act as a discussion topic,
     * a discussion mean on documents,
-    * a subscription mechanism to be updated about new messages on 
+    * a subscription mechanism to be updated about new messages on
       interesting documents,
-    * an unified feeds page to see recent messages and activity 
+    * an unified feeds page to see recent messages and activity
       on followed documents,
     * user communication through the feeds page,
     * a threaded discussion design,
     * relies on the global outgoing mail server, an integrated email
-      management system allowing to send emails with a configurable 
+      management system allowing to send emails with a configurable
       scheduler-based processing engine
     * includes an extensible generic email composition assistant, that can turn
       into a mass-mailing assistant, and is capable of interpreting

addons/mail/mail_message.py

@@ -306,11 +306,12 @@ class mail_message(osv.Model):
 
     def unlink(self, cr, uid, ids, context=None):
         # cascade-delete attachments that are directly attached to the message (should only happen
-        # for mail.messages that act as parent for a standalone mail.mail record.
+        # for mail.messages that act as parent for a standalone mail.mail record). Also remove
+        # attachment with a void id, because this can happen with the composer.
         attachments_to_delete = []
-        for mail in self.browse(cr, uid, ids, context=context):
-            for attach in mail.attachment_ids:
-                if attach.res_model == self._name and attach.res_id == mail.id:
+        for message in self.browse(cr, uid, ids, context=context):
+            for attach in message.attachment_ids:
+                if attach.res_model == self._name and (attach.res_id == message.id or attach.res_id == 0):
                     attachments_to_delete.append(attach.id)
         if attachments_to_delete:
             self.pool.get('ir.attachment').unlink(cr, uid, attachments_to_delete, context=context)

addons/mail/static/src/xml/mail.xml

@@ -81,8 +81,8 @@
         <t t-call="HiddenInputFile">
             <t t-set="fileupload_id" t-value="widget.fileupload_id"/>
             <t t-set="fileupload_action">/web/binary/upload_attachment</t>
-            <input type="hidden" name="model" t-att-value="widget.options.context.default_model"/>
-            <input type="hidden" name="id" t-att-value="widget.options.context.default_res_id"/>
+            <input type="hidden" name="model" t-att-value="widget.form_view.model"/>
+            <input type="hidden" name="id" t-att-value="widget.form_view.datarecord.id || 0"/>
             <input type="hidden" name="session_id" t-att-value="widget.session.session_id"/>
         </t>
     </t>

addons/mail/wizard/mail_compose_message.py

@@ -262,6 +262,8 @@ class mail_compose_message(osv.TransientModel):
                     post_values.update(email_dict)
                 # post the message
                 active_model_pool.message_post(cr, uid, [res_id], type='comment', context=context, **post_values)
+            # post process: update attachments, because id is not necessarily known when adding attachments in Chatter
+            self.pool.get('ir.attachment').write(cr, uid, [attach.id for attach in wizard.attachment_ids], {'res_id': wizard.id}, context=context)
 
         return {'type': 'ir.actions.act_window_close'}