[IMP] report: Printed Report names customization

PURPOSE
=======

I've seen this new improvement regarding the naming of the printed reports:
https://www.odoo.com/web?#id=10870&view_type=form&model=project.task&menu_id=3942&action=327

This makes the report have the pdf name being the name instead of the report_name of
the ir.actions.report.xml, which is already an improvement.

But why don't we allow the users to have their own naming conventions?
I mean, we could allow our client to create and name their pdf the way they want, as
they do regarding the attachment.

Not only when it's about saving it as an attachment on the record, but also when downloading
directly the pdf, such that the modification in the previous screenshot, would give the following
result when downloaded:

People need to have their pdf named automatically according to a convention. When you print 10 sales
order during an hour, you don't want to get lost in having the following:
Devis / Commande.pdf
Devis / Commande(1).pdf
Devis / Commande(2).pdf
Devis / Commande(3).pdf
Devis / Commande(4).pdf
Devis / Commande(5).pdf
Devis / Commande(6).pdf
Devis / Commande(7).pdf

especially when those are for different partners.

addons/report/__openerp__.py

@@ -13,6 +13,7 @@ Report
         'data/report_paperformat.xml',
         'security/ir.model.access.csv',
         'views/report.xml',
+        'views/ir_actions.xml',
     ],
     'installable': True,
     'auto_install': True,

addons/report/controllers/main.py

@@ -4,8 +4,10 @@
 from openerp.addons.web.http import Controller, route, request
 from openerp.addons.web.controllers.main import _serialize_exception, content_disposition
 from openerp.tools import html_escape
+from openerp.tools.safe_eval import safe_eval as eval
 
 import json
+import time
 from werkzeug import exceptions, url_decode
 from werkzeug.test import Client
 from werkzeug.wrappers import BaseResponse
@@ -102,6 +104,10 @@ class ReportController(Controller):
                 cr, uid = request.cr, request.uid
                 report = request.registry['report']._get_report_from_name(cr, uid, reportname)
                 filename = "%s.%s" % (report.name, "pdf")
+                ids = [int(x) for x in docids.split(",")]
+                obj = request.env[report.model].browse(ids)
+                if report.print_report_name and not len(obj) > 1:
+                    filename = eval(report.print_report_name, {'object': obj, 'time': time})
                 response.headers.add('Content-Disposition', content_disposition(filename))
                 response.set_cookie('fileToken', token)
                 return response

addons/report/models/__init__.py

+import abstract_report
+import ir_actions
 import report
 import report_paperformat
 import abstract_report

addons/report/models/ir_actions.py

+from openerp import models, fields
+
+class Actions(models.Model):
+    _inherit = 'ir.actions.report.xml'
+
+    print_report_name = fields.Char('Printed Report Name', help="This is the filename of the report going to download. Keep empty to not change the report filename. You can use a python expression with the object and time variables.")

addons/report/views/ir_actions.xml

+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+        <!-- Adding a print_report_name field inside to the report action form view -->
+        <record id="act_report_xml_view_inherit_report" model="ir.ui.view">
+            <field name="name">ir.actions.report.xml.form.inherit</field>
+            <field name="inherit_id" ref="base.act_report_xml_view" />
+            <field name="model">ir.actions.report.xml</field>
+            <field name="arch" type="xml">
+                <data>
+                    <xpath expr="//field[@name='report_name']" position="after">
+                        <field name="print_report_name" />
+                    </xpath>
+                </data>
+            </field>
+        </record>
+    </data>
+</openerp>
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