Putaway strategy: add module to restore the method field

The method field was removed in module 'stock' of Odoo 11. See
f2926823e8

Since the field is used by OCA modules such as stock_putaway_product
(eg. to add a 'per_product' method), the new stock_putaway_method module
is added to restore this feature if needed.

stock_putaway_method/README.rst

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+.. image:: https://img.shields.io/badge/license-AGPL--3-blue.png
+   :target: https://www.gnu.org/licenses/agpl
+   :alt: License: AGPL-3
+
+=======================
+Putaway strategy method
+=======================
+
+This module adds the putaway strategy method back, removed from the stock module in Odoo 11.
+
+Installation
+============
+
+To install this module, just click the install button. This module is automatically installed when installing relying modules such as *stock_putaway_product*.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues
+<https://github.com/OCA/stock-logistics-warehouse/issues>`_. In case of trouble, please
+check there if your issue has already been reported. If you spotted it first,
+help us smash it by providing detailed and welcomed feedback.
+
+Credits
+=======
+
+Images
+------
+
+* Odoo Community Association: `Icon <https://odoo-community.org/logo.png>`_.
+
+Contributors
+------------
+
+* Alexandre Saunier - Camptocamp SA <alexandre.saunier@camptocamp.com>
+
+Maintainer
+----------
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+This module is maintained by the OCA.
+
+OCA, or the Odoo Community Association, is a nonprofit organization whose
+mission is to support the collaborative development of Odoo features and
+promote its widespread use.
+
+To contribute to this module, please visit https://odoo-community.org.

stock_putaway_method/__init__.py

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+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from . import models
+from . import tests

stock_putaway_method/__manifest__.py

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+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+{
+    'name': 'Putaway strategy method',
+    'summary': 'Add the putaway strategy method back, '
+               'removed from the stock module in Odoo 11',
+    'version': '11.0.1.0.0',
+    'category': 'Inventory',
+    'website': 'https://www.camptocamp.com',
+    'author': 'Camptocamp SA, '
+              'Odoo Community Association (OCA)',
+    'license': 'AGPL-3',
+    'depends': [
+        'product',
+        'stock'
+    ],
+    'data': [
+        'views/product_strategy_views.xml'
+    ],
+    'demo': []
+}

stock_putaway_method/models/__init__.py

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+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from . import product_strategy

stock_putaway_method/models/product_strategy.py

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+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class PutAwayStrategy(models.Model):
+    _inherit = 'product.putaway'
+
+    method = fields.Selection(
+        selection='_get_putaway_options',
+        string='Method',
+        default='fixed',
+        required=True,
+    )
+
+    @api.model
+    def _get_putaway_options(self):
+        return [('fixed', 'Fixed Location')]

stock_putaway_method/tests/__init__.py

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+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from . import test_putaway_method

stock_putaway_method/tests/test_putaway_method.py

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+# Copyright 2018 Camptocamp SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo.tests.common import TransactionCase
+
+
+class TestPutawayMethod(TransactionCase):
+
+    # Check if "fixed" is a valid putaway method
+    def test_01_putaway_methods(self):
+        field_method = self.env['product.putaway']._fields.get('method')
+        self.assertIn('fixed', field_method.get_values(self.env))

stock_putaway_method/views/product_strategy_views.xml

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+<?xml version="1.0" encoding="utf-8"?>
+
+<odoo>
+    <record id="view_putaway" model="ir.ui.view">
+        <field name="name">product.putaway.form.method</field>
+        <field name="model">product.putaway</field>
+        <field name="inherit_id" ref="stock.view_putaway"/>
+        <field name="arch" type="xml">
+            <xpath expr="//field[@name='name']/../.." position="replace">
+                <form string="Putaway">
+                    <group colspan="4">
+                        <field name="name"/>
+                        <field name="method"/>
+                    </group>
+                    <div attrs="{'invisible': [('method', '!=', 'fixed')]}">
+                        <separator string="Fixed Locations Per Categories"/>
+                        <field name="fixed_location_ids" colspan="4" nolabel="1">
+                            <tree editable="top">
+                                <field name="sequence" widget='handle'/>
+                                <field name="category_id"/>
+                                <field name="fixed_location_id"/>
+                            </tree>
+                        </field>
+                    </div>
+                </form>
+            </xpath>
+        </field>
+    </record>
+</odoo>