Add links with accounts and taxes for easier assignation.

account_tag_menu/__init__.py

@@ -0,0 +1 @@
+from . import models

account_tag_menu/models/__init__.py

@@ -0,0 +1 @@
+from . import account_tag

account_tag_menu/models/account_tag.py

@@ -0,0 +1,17 @@
+# Copyright (C) 2017 FOREST AND BIOMASS ROMANIA SA
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from odoo import fields, models
+
+
+class AccountAccountTag(models.Model):
+    _inherit = 'account.account.tag'
+
+    account_ids = fields.Many2many(
+        'account.account', 'account_account_account_tag',
+        string='Accounts',
+        help="Assigned accounts for custom reporting")
+    tax_ids = fields.Many2many(
+        'account.account.tag', 'account_tax_account_tag',
+        string='Taxes',
+        help="Assigned taxes for custom reporting")

account_tag_menu/views/account_tag.xml

@@ -1,9 +1,36 @@
 <?xml version="1.0" encoding="utf-8"?>
 <odoo>
 
-<menuitem id="account_tag_menu"
-    action="account.account_tag_action"
-    sequence="40"
-    parent="account.account_account_menu"/>
+    <record id="account_tag_view_form" model="ir.ui.view">
+        <field name="name">tag_addd_accounts_taxes</field>
+        <field name="model">account.account.tag</field>
+        <field name="inherit_id" ref="account.account_tag_view_form"/>
+        <field name="arch" type="xml">
+            <xpath expr="//group" position="after">
+                <group>
+                    <group id="aplicability">
+                        <field name="applicability" widget="selection"/>
+                    </group>
+                </group>
+                <group>
+                    <group id="links">
+                        <label for="account_ids" attrs="{'invisible':[('applicability','!=', 'accounts')]}"/>
+                        <field name="account_ids" widget="many2many_tags" nolabel="1"
+                            attrs="{'invisible':[('applicability','!=', 'accounts')]}"
+                            options="{'no_create_edit': True}"/>
+                        <label for="tax_ids" attrs="{'invisible':[('applicability','!=', 'taxes')]}"/>
+                        <field name="tax_ids" widget="many2many_tags" nolabel="1"
+                            attrs="{'invisible':[('applicability','!=', 'taxes')]}"
+                            options="{'no_create_edit': True}"/>  
+                    </group>
+                </group>                                  
+            </xpath>
+        </field>
+    </record>
+    
+    <menuitem id="account_tag_menu"
+        action="account.account_tag_action"
+        sequence="40"
+        parent="account.account_account_menu"/>
 
 </odoo>