commit inicial

__init__.py

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+# -*- encoding: utf-8 -*-
+##############################################################################
+# For copyright and license notices, see __openerp__.py file in root directory
+##############################################################################
+from . import models

__openerp__.py

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+# -*- encoding: utf-8 -*-
+{
+    "name": "Back to draft on stock move",
+    "version": "8.0.1.0.0",
+    "category": "Stock",
+    "author": "Eiru",
+    "depends": [
+        "stock",
+    ],
+    "data": [
+        "views/stock_move_view.xml",
+    ],
+    "installable": True,
+}

models/__init__.py

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+# -*- encoding: utf-8 -*-
+from . import pos_order

models/pos_order.py

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+# -*- encoding: utf-8 -*-
+
+from openerp import models, api, exceptions, _
+
+
+class StockMove(models.Model):
+    _inherit = "stock.move"
+
+    @api.multi
+    def button_draft(self):
+        for move in self:
+            move.write({'state': 'draft'})
+        return True

views/stock_move_view.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<openerp>
+    <data>
+
+        <record id="view_stock_move_form_draft" model="ir.ui.view">
+            <field name="name">stock.move.form.draft</field>
+            <field name="model">stock.move</field>
+            <field name="inherit_id" ref="stock.view_move_form"/>
+            <field name="arch" type="xml">
+                <field name="state" position="before">
+                    <button name="button_draft"
+                            states="done"
+                            string="Back to draft"
+                            type="object"
+                            groups="base.group_no_one"/>
+                </field>
+            </field>
+        </record>
+
+    </data>
+</openerp>