add new module

inventory_groups/__init__.py

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+from . import models

inventory_groups/__manifest__.py

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+# -*- coding: utf-8 -*-
+# Part of Odoo. See LICENSE file for full copyright and licensing details.
+
+{
+    'name': 'Inventory Groups',
+    'version': '1.0',
+    'category': 'Inventory/Product',
+    'summary': 'Enable to make arrangement in Groups',
+    'description': "",
+    'depends': ['base'],
+    'data': [
+       
+        
+        'security/ir.model.access.csv',
+        'views/groups.xml',
+    ],
+    'demo': [
+       
+    ],
+    'css': [],
+    'installable': True,
+    'application': True,
+    'auto_install': False
+}

inventory_groups/models/__init__.py

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+from . import groups

inventory_groups/models/groups.py

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+from odoo import _, fields, models, api
+
+
+class Inventorygroups(models.Model):
+    _name = "stock.groups"
+    _parent_name = "parent_id"
+    _rec_name = 'complete_name'
+
+    name = fields.Char(required=True)
+    parent_id = fields.Many2one('stock.groups', "Parent Group")
+    complete_name = fields.Char(
+        'Complete Name', compute='_compute_complete__group_name',
+        store=True)
+
+    @api.depends('name', 'parent_id.complete_name')
+    def _compute_complete__group_name(self):
+        for category in self:
+            if category.parent_id:
+                category.complete_name = '%s / %s' % (category.parent_id.complete_name, category.name)
+            else:
+                category.complete_name = category.name

inventory_groups/security/.~lock.ir.model.access.csv#

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+,apagen,apagen-One-Z1402,16.07.2020 21:13,file:///home/apagen/.config/libreoffice/4;

inventory_groups/security/ir.model.access.csv

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+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_stock_groups,stock.groups,model_stock_groups,base.group_user,1,1,1,1

inventory_groups/views/groups.xml

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+<?xml version="1.0"?>
+<odoo>
+	<record id="inventory_groups_arrangment_view_form" model="ir.ui.view">
+        <field name="name">stock.groups.form</field>
+        <field name="model">stock.groups</field>
+        <field name="arch" type="xml">
+            <form>
+                <field name="name" placeholder="Name"/>
+                <group>
+                    <field name="parent_id"/>
+                </group>
+            </form>
+        </field>
+    </record>
+    <record id="inventory_groups_arrangment_view_action" model="ir.actions.act_window">
+        <field name="name">Groups</field>
+        <field name="res_model">stock.groups</field>
+        <field name="view_mode">tree,form</field>
+        <field name="help" type="html">
+          <p class="o_view_nocontent_smiling_face">
+          	Create Groups
+          </p>
+        </field>
+    </record>
+    <menuitem
+            id="inventory_groups_arrangment_view_menu"
+            name="Groups"
+            action="inventory_groups_arrangment_view_action"
+            parent="stock.menu_product_in_config_stock"
+            />
+</odoo>