diff --git a/base_user_role_history/README.rst b/base_user_role_history/README.rst
new file mode 100644
index 00000000..f7f5d727
--- /dev/null
+++ b/base_user_role_history/README.rst
@@ -0,0 +1,97 @@
+======================
+Base User Role History
+======================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! This file is generated by oca-gen-addon-readme !!
+   !! changes will be overwritten.                   !!
+   !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+
+.. |badge1| image:: https://img.shields.io/badge/maturity-Beta-yellow.png
+    :target: https://odoo-community.org/page/development-status
+    :alt: Beta
+.. |badge2| image:: https://img.shields.io/badge/licence-AGPL--3-blue.png
+    :target: http://www.gnu.org/licenses/agpl-3.0-standalone.html
+    :alt: License: AGPL-3
+.. |badge3| image:: https://img.shields.io/badge/github-OCA%2Fserver--backend-lightgray.png?logo=github
+    :target: https://github.com/OCA/server-backend/tree/16.0/base_user_role_history
+    :alt: OCA/server-backend
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/server-backend-16-0/server-backend-16-0-base_user_role_history
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runbot-Try%20me-875A7B.png
+    :target: https://runbot.odoo-community.org/runbot/253/16.0
+    :alt: Try me on Runbot
+
+|badge1| |badge2| |badge3| |badge4| |badge5|
+
+This addon provides history for roles modifications on users.
+Each time a role is added/updated/unlinked on a user, a new role history line
+is created mentioning what changes were made and who made them.
+Theses informations are directly accessible from users via a smart button.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Usage
+=====
+
+Changes on user roles are easily accessible via a button on user form view.
+
+Known issues / Roadmap
+======================
+
+Since roles on role history line have 'cascade' ondelete, role deletion leads
+to role history line deletion. In order to keep history even in the case of
+a role deletion, module could be upgraded.
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/server-backend/issues>`_.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+`feedback <https://github.com/OCA/server-backend/issues/new?body=module:%20base_user_role_history%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**>`_.
+
+Do not contact contributors directly about support or help with technical issues.
+
+Credits
+=======
+
+Authors
+~~~~~~~
+
+* ACSONE SA/NV
+
+Contributors
+~~~~~~~~~~~~
+
+* Benoit Aimont <benoit.aimont@acsone.eu> (https://acsone.eu)
+* Thomas Binsfeld <thomas.binsfeld@acsone.eu> (https://acsone.eu)
+
+Maintainers
+~~~~~~~~~~~
+
+This module is maintained by the OCA.
+
+.. image:: https://odoo-community.org/logo.png
+   :alt: Odoo Community Association
+   :target: https://odoo-community.org
+
+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.
+
+.. |maintainer-ThomasBinsfeld| image:: https://github.com/ThomasBinsfeld.png?size=40px
+    :target: https://github.com/ThomasBinsfeld
+    :alt: ThomasBinsfeld
+
+Current `maintainer <https://odoo-community.org/page/maintainer-role>`__:
+
+|maintainer-ThomasBinsfeld|
+
+This module is part of the `OCA/server-backend <https://github.com/OCA/server-backend/tree/16.0/base_user_role_history>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
diff --git a/base_user_role_history/__init__.py b/base_user_role_history/__init__.py
new file mode 100644
index 00000000..0650744f
--- /dev/null
+++ b/base_user_role_history/__init__.py
@@ -0,0 +1 @@
+from . import models
diff --git a/base_user_role_history/__manifest__.py b/base_user_role_history/__manifest__.py
new file mode 100644
index 00000000..218388d7
--- /dev/null
+++ b/base_user_role_history/__manifest__.py
@@ -0,0 +1,25 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+{
+    "name": "Base User Role History",
+    "summary": """
+        This module allows to track the changes on users roles.""",
+    "version": "16.0.1.0.0",
+    "license": "AGPL-3",
+    "author": "ACSONE SA/NV, " "Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/server-backend",
+    "depends": [
+        # Odoo
+        "mail",
+        # OCA
+        "base_user_role",
+    ],
+    "data": [
+        "security/base_user_role_line_history.xml",
+        "views/base_user_role_line_history.xml",
+        "views/res_users.xml",
+    ],
+    "development_status": "Beta",
+    "maintainers": ["ThomasBinsfeld"],
+}
diff --git a/base_user_role_history/i18n/base_user_role_history.pot b/base_user_role_history/i18n/base_user_role_history.pot
new file mode 100644
index 00000000..8825e17d
--- /dev/null
+++ b/base_user_role_history/i18n/base_user_role_history.pot
@@ -0,0 +1,166 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* base_user_role_history
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 16.0\n"
+"Report-Msgid-Bugs-To: \n"
+"Last-Translator: \n"
+"Language-Team: \n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+msgid "<span class=\"o_stat_text\">Last update of roles</span>"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__performed_action
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Action"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_is_enabled
+msgid "Active after edit"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_is_enabled
+msgid "Active before edit"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__add
+msgid "Add"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_uid
+msgid "Created by"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_date
+msgid "Created on"
+msgstr ""
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Date and time of edition"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__unlink
+msgid "Delete"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__display_name
+msgid "Display Name"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__edit
+msgid "Edit"
+msgstr ""
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+msgid "Edited user"
+msgstr ""
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Editor"
+msgstr ""
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Group By"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_base_user_role_line_history
+msgid "History of user roles"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__id
+msgid "ID"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history____last_update
+msgid "Last Modified on"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_uid
+msgid "Last Updated by"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_date
+msgid "Last Updated on"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_res_users__last_role_line_modification
+msgid "Last roles modification"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_to
+msgid "New end date"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "New role"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_from
+msgid "New start date"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_to
+msgid "Old end date"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Old role"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_from
+msgid "Old start date"
+msgstr ""
+
+#. module: base_user_role_history
+#: code:addons/base_user_role_history/models/res_users.py:0
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+#, python-format
+msgid "Roles history"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__user_id
+msgid "User"
+msgstr ""
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_res_users
+msgid "Users"
+msgstr ""
diff --git a/base_user_role_history/i18n/es.po b/base_user_role_history/i18n/es.po
new file mode 100644
index 00000000..a5e159dc
--- /dev/null
+++ b/base_user_role_history/i18n/es.po
@@ -0,0 +1,169 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* base_user_role_history
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 16.0\n"
+"Report-Msgid-Bugs-To: \n"
+"PO-Revision-Date: 2021-03-16 18:45+0000\n"
+"Last-Translator: Ana Suárez <ana.suarez@qubiq.es>\n"
+"Language-Team: none\n"
+"Language: es\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: nplurals=2; plural=n != 1;\n"
+"X-Generator: Weblate 4.3.2\n"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+msgid "<span class=\"o_stat_text\">Last update of roles</span>"
+msgstr "<span class=\"o_stat_text\">Última actualización de roles</span>"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__performed_action
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Action"
+msgstr "Acción"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_is_enabled
+msgid "Active after edit"
+msgstr "Activo después de editar"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_is_enabled
+msgid "Active before edit"
+msgstr "Activo antes de editar"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__add
+msgid "Add"
+msgstr "Añadir"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_uid
+msgid "Created by"
+msgstr "Creado por"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_date
+msgid "Created on"
+msgstr "Creado el"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Date and time of edition"
+msgstr "Fecha y hora de edición"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__unlink
+msgid "Delete"
+msgstr "Eliminar"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__display_name
+msgid "Display Name"
+msgstr "Nombre mostrado"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__edit
+msgid "Edit"
+msgstr "Editar"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+msgid "Edited user"
+msgstr "Usuario editado"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Editor"
+msgstr "Editor"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Group By"
+msgstr "Agrupar por"
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_base_user_role_line_history
+msgid "History of user roles"
+msgstr "Historial de roles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__id
+msgid "ID"
+msgstr "ID"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history____last_update
+msgid "Last Modified on"
+msgstr "Última modificación el"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_uid
+msgid "Last Updated by"
+msgstr "Última actualización por"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_date
+msgid "Last Updated on"
+msgstr "Última actualización el"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_res_users__last_role_line_modification
+msgid "Last roles modification"
+msgstr "Última modificación roles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_to
+msgid "New end date"
+msgstr "Nueva fecha fin"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "New role"
+msgstr "Nuevo rol"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_from
+msgid "New start date"
+msgstr "Nueva fecha inicio"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_to
+msgid "Old end date"
+msgstr "Antigua fecha fin"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Old role"
+msgstr "Antiguo rol"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_from
+msgid "Old start date"
+msgstr "Antigua fecha inicio"
+
+#. module: base_user_role_history
+#: code:addons/base_user_role_history/models/res_users.py:0
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+#, python-format
+msgid "Roles history"
+msgstr "Historial Roles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__user_id
+msgid "User"
+msgstr "Usuario"
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_res_users
+msgid "Users"
+msgstr "Usuarios"
diff --git a/base_user_role_history/i18n/fr.po b/base_user_role_history/i18n/fr.po
new file mode 100644
index 00000000..395904e1
--- /dev/null
+++ b/base_user_role_history/i18n/fr.po
@@ -0,0 +1,169 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* base_user_role_history
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 9.0c\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-12-18 11:07+0000\n"
+"PO-Revision-Date: 2019-09-30 11:51+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"Language: fr\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+msgid "<span class=\"o_stat_text\">Last update of roles</span>"
+msgstr "<span class=\"o_stat_text\">Dernière modification des rôles</span>"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__performed_action
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Action"
+msgstr "Action"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_is_enabled
+msgid "Active after edit"
+msgstr "Actif après édition"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_is_enabled
+msgid "Active before edit"
+msgstr "Actif avant édition"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__add
+msgid "Add"
+msgstr "Ajouter"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_uid
+msgid "Created by"
+msgstr "Créé par"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_date
+msgid "Created on"
+msgstr "Créé le"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Date and time of edition"
+msgstr "Date et heure de modification"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__unlink
+msgid "Delete"
+msgstr "Supprimer"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__display_name
+msgid "Display Name"
+msgstr "Nom affiché"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__edit
+msgid "Edit"
+msgstr "Modifier"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+msgid "Edited user"
+msgstr "Utilisateur modifié"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Editor"
+msgstr "Utilisateur modificateur"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Group By"
+msgstr "Regrouper par"
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_base_user_role_line_history
+msgid "History of user roles"
+msgstr "Historique des rôles de l'utilisateur"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__id
+msgid "ID"
+msgstr "ID"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history____last_update
+msgid "Last Modified on"
+msgstr "Dernière modification le"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_uid
+msgid "Last Updated by"
+msgstr "Mis à jour par"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_date
+msgid "Last Updated on"
+msgstr "Mis à jour le"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_res_users__last_role_line_modification
+msgid "Last roles modification"
+msgstr "Dernière modification des rôles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_to
+msgid "New end date"
+msgstr "Nouvelle date de fin"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "New role"
+msgstr "Nouveau rôle"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_from
+msgid "New start date"
+msgstr "Nouvelle date de début"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_to
+msgid "Old end date"
+msgstr "Ancienne date de fin"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Old role"
+msgstr "Ancien rôle"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_from
+msgid "Old start date"
+msgstr "Ancienne date de début"
+
+#. module: base_user_role_history
+#: code:addons/base_user_role_history/models/res_users.py:0
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+#, python-format
+msgid "Roles history"
+msgstr "Historique des rôles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__user_id
+msgid "User"
+msgstr "Utilisateur"
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_res_users
+msgid "Users"
+msgstr "Utilisateurs"
diff --git a/base_user_role_history/i18n/fr_BE.po b/base_user_role_history/i18n/fr_BE.po
new file mode 100644
index 00000000..e108d9c7
--- /dev/null
+++ b/base_user_role_history/i18n/fr_BE.po
@@ -0,0 +1,169 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* base_user_role_history
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 9.0c\n"
+"Report-Msgid-Bugs-To: \n"
+"POT-Creation-Date: 2019-12-18 11:07+0000\n"
+"PO-Revision-Date: 2019-09-30 11:50+0000\n"
+"Last-Translator: <>\n"
+"Language-Team: \n"
+"Language: fr_BE\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: \n"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+msgid "<span class=\"o_stat_text\">Last update of roles</span>"
+msgstr "<span class=\"o_stat_text\">Dernière modification des rôles</span>"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__performed_action
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Action"
+msgstr "Action"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_is_enabled
+msgid "Active after edit"
+msgstr "Actif après édition"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_is_enabled
+msgid "Active before edit"
+msgstr "Actif avant édition"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__add
+msgid "Add"
+msgstr "Ajouter"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_uid
+msgid "Created by"
+msgstr "Créé par"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__create_date
+msgid "Created on"
+msgstr "Créé le"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Date and time of edition"
+msgstr "Date et heure de modification"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__unlink
+msgid "Delete"
+msgstr "Supprimer"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__display_name
+msgid "Display Name"
+msgstr "Nom affiché"
+
+#. module: base_user_role_history
+#: model:ir.model.fields.selection,name:base_user_role_history.selection__base_user_role_line_history__performed_action__edit
+msgid "Edit"
+msgstr "Modifier"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+msgid "Edited user"
+msgstr "Utilisateur modifié"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_form_view
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_tree_view
+msgid "Editor"
+msgstr "Utilisateur modificateur"
+
+#. module: base_user_role_history
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Group By"
+msgstr "Regrouper par"
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_base_user_role_line_history
+msgid "History of user roles"
+msgstr "Historique des rôles de l'utilisateur"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__id
+msgid "ID"
+msgstr "ID"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history____last_update
+msgid "Last Modified on"
+msgstr "Dernière modification le"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_uid
+msgid "Last Updated by"
+msgstr "Derniere fois mis à jour par"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__write_date
+msgid "Last Updated on"
+msgstr "Dernière mis à jour le"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_res_users__last_role_line_modification
+msgid "Last roles modification"
+msgstr "Dernière modification des rôles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_to
+msgid "New end date"
+msgstr "Nouvelle date de fin"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "New role"
+msgstr "Nouveau rôle"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__new_date_from
+msgid "New start date"
+msgstr "Nouvelle date de début"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_to
+msgid "Old end date"
+msgstr "Ancienne date de fin"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_role_id
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.base_user_role_line_history_search_view
+msgid "Old role"
+msgstr "Ancien rôle"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__old_date_from
+msgid "Old start date"
+msgstr "Ancienne date de début"
+
+#. module: base_user_role_history
+#: code:addons/base_user_role_history/models/res_users.py:0
+#: model_terms:ir.ui.view,arch_db:base_user_role_history.res_users_form_view
+#, python-format
+msgid "Roles history"
+msgstr "Historique des rôles"
+
+#. module: base_user_role_history
+#: model:ir.model.fields,field_description:base_user_role_history.field_base_user_role_line_history__user_id
+msgid "User"
+msgstr "Utilisateur"
+
+#. module: base_user_role_history
+#: model:ir.model,name:base_user_role_history.model_res_users
+msgid "Users"
+msgstr "Utilisateurs"
diff --git a/base_user_role_history/models/__init__.py b/base_user_role_history/models/__init__.py
new file mode 100644
index 00000000..9ce69302
--- /dev/null
+++ b/base_user_role_history/models/__init__.py
@@ -0,0 +1,2 @@
+from . import res_users
+from . import base_user_role_line_history
diff --git a/base_user_role_history/models/base_user_role_line_history.py b/base_user_role_history/models/base_user_role_line_history.py
new file mode 100644
index 00000000..328fe5bf
--- /dev/null
+++ b/base_user_role_history/models/base_user_role_line_history.py
@@ -0,0 +1,117 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import api, fields, models
+
+
+class BaseUserRoleLineHistory(models.Model):
+    _name = "base.user.role.line.history"
+    _description = "History of user roles"
+    _order = "id desc"
+
+    performed_action = fields.Selection(
+        string="Action",
+        selection=[("add", "Add"), ("unlink", "Delete"), ("edit", "Edit")],
+        required=True,
+        readonly=True,
+    )
+    user_id = fields.Many2one(
+        string="User",
+        comodel_name="res.users",
+        ondelete="cascade",
+        readonly=True,
+        index=True,
+    )
+    old_role_id = fields.Many2one(
+        string="Old role",
+        comodel_name="res.users.role",
+        ondelete="cascade",
+        readonly=True,
+        index=True,
+    )
+    new_role_id = fields.Many2one(
+        string="New role",
+        comodel_name="res.users.role",
+        ondelete="cascade",
+        readonly=True,
+        index=True,
+    )
+    old_date_from = fields.Date(string="Old start date", readonly=True)
+    new_date_from = fields.Date(string="New start date", readonly=True)
+    old_date_to = fields.Date(string="Old end date", readonly=True)
+    new_date_to = fields.Date(string="New end date", readonly=True)
+    old_is_enabled = fields.Boolean(string="Active before edit", readonly=True)
+    new_is_enabled = fields.Boolean(string="Active after edit", readonly=True)
+
+    @api.model
+    def _prepare_create_from_vals(
+        self, old_role_line_values_by_user, new_role_line_values_by_user
+    ):
+        role_history_line_vals_by_role_line = {}
+        for key, value in new_role_line_values_by_user.items():
+            old_vals = old_role_line_values_by_user.get(key, {})
+            new_vals = value
+            # Manage deletion of role lines and old values of modified lines
+            for role_line_id, role_line_vals in old_vals.items():
+                action = "unlink" if role_line_id not in new_vals else "edit"
+                if action == "edit":
+                    # Skip if no change
+                    if not any(
+                        role_line_vals[k] != new_vals[role_line_id][k]
+                        for k in role_line_vals
+                    ):
+                        continue
+                role_history_line_vals_by_role_line.setdefault(role_line_id, {})
+                role_history_line_vals_by_role_line[role_line_id].update(
+                    {
+                        "performed_action": action,
+                        "user_id": role_line_vals["user_id"],
+                        "old_role_id": role_line_vals["role_id"],
+                        "old_date_from": role_line_vals["date_from"],
+                        "old_date_to": role_line_vals["date_to"],
+                        "old_is_enabled": role_line_vals["is_enabled"],
+                    }
+                )
+            # Manage addition of role lines and new values of modified ones
+            for role_line_id, role_line_vals in new_vals.items():
+                action = "add" if role_line_id not in old_vals else "edit"
+                if action == "edit":
+                    # Skip if no change
+                    if not any(
+                        role_line_vals[k] != old_vals[role_line_id][k]
+                        for k in role_line_vals
+                    ):
+                        continue
+                role_history_line_vals_by_role_line.setdefault(role_line_id, {})
+                role_history_line_vals_by_role_line[role_line_id].update(
+                    {
+                        "performed_action": action,
+                        "user_id": role_line_vals["user_id"],
+                        "new_role_id": role_line_vals["role_id"],
+                        "new_date_from": role_line_vals["date_from"],
+                        "new_date_to": role_line_vals["date_to"],
+                        "new_is_enabled": role_line_vals["is_enabled"],
+                    }
+                )
+        return role_history_line_vals_by_role_line
+
+    @api.model
+    def create_from_vals(
+        self, old_role_line_values_by_user, new_role_line_values_by_user
+    ):
+        """
+        This method creates user role line history objects based on given
+        old/new values.
+        old_role_line_values_by_user and new_role_line_values_by_user are like:
+        {user_id:
+         {role_line_id:
+          {role_line_values},
+         },
+        }
+        """
+        role_history_line_vals_by_role_line = self._prepare_create_from_vals(
+            old_role_line_values_by_user, new_role_line_values_by_user
+        )
+        # Create the history lines with sudo
+        # (nobody has the create right)
+        self.sudo().create(list(role_history_line_vals_by_role_line.values()))
diff --git a/base_user_role_history/models/res_users.py b/base_user_role_history/models/res_users.py
new file mode 100644
index 00000000..2a408287
--- /dev/null
+++ b/base_user_role_history/models/res_users.py
@@ -0,0 +1,73 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+
+from odoo import _, api, fields, models
+
+
+class ResUsers(models.Model):
+    _inherit = "res.users"
+
+    last_role_line_modification = fields.Datetime(
+        string="Last roles modification", readonly=True
+    )
+
+    @api.model
+    def _prepare_role_line_history_dict(self, role_line):
+        return {
+            "user_id": role_line.user_id.id,
+            "role_id": role_line.role_id.id,
+            "date_from": role_line.date_from,
+            "date_to": role_line.date_to,
+            "is_enabled": role_line.is_enabled,
+        }
+
+    def _get_role_line_values_by_user(self):
+        role_line_values_by_user = {}
+        for rec in self:
+            role_line_values_by_user.setdefault(rec, {})
+            for role_line in rec.role_line_ids:
+                role_line_values_by_user[rec][
+                    role_line.id
+                ] = self._prepare_role_line_history_dict(role_line)
+        return role_line_values_by_user
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        res = super().create(vals_list)
+        if all("role_line_ids" not in vals for vals in vals_list):
+            return res
+        new_role_line_values_by_user = res._get_role_line_values_by_user()
+        new_role_line_to_create = {}
+        users = self.browse()
+        for user, lines in new_role_line_values_by_user.items():
+            if lines:
+                new_role_line_to_create[user] = lines
+                user |= user
+        self.env["base.user.role.line.history"].create_from_vals(
+            {}, new_role_line_to_create
+        )
+        users.last_role_line_modification = fields.Datetime.now()
+        return res
+
+    def write(self, vals):
+        if "role_line_ids" not in vals:
+            return super().write(vals)
+        old_role_line_values_by_user = self._get_role_line_values_by_user()
+        vals["last_role_line_modification"] = fields.Datetime.now()
+        res = super().write(vals)
+        new_role_line_values_by_user = self._get_role_line_values_by_user()
+        self.env["base.user.role.line.history"].create_from_vals(
+            old_role_line_values_by_user, new_role_line_values_by_user
+        )
+        return res
+
+    def show_role_lines_history(self):  # pragma: no cover
+        self.ensure_one()
+        domain = [("user_id", "=", self.id)]
+        return {
+            "name": _("Roles history"),
+            "type": "ir.actions.act_window",
+            "view_mode": "tree,form",
+            "res_model": "base.user.role.line.history",
+            "domain": domain,
+        }
diff --git a/base_user_role_history/readme/CONTRIBUTORS.rst b/base_user_role_history/readme/CONTRIBUTORS.rst
new file mode 100644
index 00000000..ce9dedf8
--- /dev/null
+++ b/base_user_role_history/readme/CONTRIBUTORS.rst
@@ -0,0 +1,2 @@
+* Benoit Aimont <benoit.aimont@acsone.eu> (https://acsone.eu)
+* Thomas Binsfeld <thomas.binsfeld@acsone.eu> (https://acsone.eu)
diff --git a/base_user_role_history/readme/DESCRIPTION.rst b/base_user_role_history/readme/DESCRIPTION.rst
new file mode 100644
index 00000000..ddc8ccf5
--- /dev/null
+++ b/base_user_role_history/readme/DESCRIPTION.rst
@@ -0,0 +1,4 @@
+This addon provides history for roles modifications on users.
+Each time a role is added/updated/unlinked on a user, a new role history line
+is created mentioning what changes were made and who made them.
+Theses informations are directly accessible from users via a smart button.
diff --git a/base_user_role_history/readme/ROADMAP.rst b/base_user_role_history/readme/ROADMAP.rst
new file mode 100644
index 00000000..620ab933
--- /dev/null
+++ b/base_user_role_history/readme/ROADMAP.rst
@@ -0,0 +1,3 @@
+Since roles on role history line have 'cascade' ondelete, role deletion leads
+to role history line deletion. In order to keep history even in the case of
+a role deletion, module could be upgraded.
diff --git a/base_user_role_history/readme/USAGE.rst b/base_user_role_history/readme/USAGE.rst
new file mode 100644
index 00000000..8c22abc6
--- /dev/null
+++ b/base_user_role_history/readme/USAGE.rst
@@ -0,0 +1 @@
+Changes on user roles are easily accessible via a button on user form view.
diff --git a/base_user_role_history/security/base_user_role_line_history.xml b/base_user_role_history/security/base_user_role_line_history.xml
new file mode 100644
index 00000000..5f339e2d
--- /dev/null
+++ b/base_user_role_history/security/base_user_role_line_history.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright 2019 ACSONE SA/NV
+     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
+<odoo>
+    <record model="ir.model.access" id="base_user_role_line_history_access_name">
+        <field name="name">base.user.role.line.history access user</field>
+        <field name="model_id" ref="model_base_user_role_line_history" />
+        <field name="group_id" ref="base.group_user" />
+        <field name="perm_read" eval="1" />
+        <field name="perm_create" eval="0" />
+        <field name="perm_write" eval="0" />
+        <field name="perm_unlink" eval="0" />
+    </record>
+</odoo>
diff --git a/base_user_role_history/static/description/icon.png b/base_user_role_history/static/description/icon.png
new file mode 100644
index 00000000..3a0328b5
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diff --git a/base_user_role_history/static/description/index.html b/base_user_role_history/static/description/index.html
new file mode 100644
index 00000000..20d074fe
--- /dev/null
+++ b/base_user_role_history/static/description/index.html
@@ -0,0 +1,437 @@
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+</head>
+<body>
+<div class="document" id="base-user-role-history">
+<h1 class="title">Base User Role History</h1>
+
+<!-- !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+!! This file is generated by oca-gen-addon-readme !!
+!! changes will be overwritten.                   !!
+!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! -->
+<p><a class="reference external" href="https://odoo-community.org/page/development-status"><img alt="Beta" src="https://img.shields.io/badge/maturity-Beta-yellow.png" /></a> <a class="reference external" href="http://www.gnu.org/licenses/agpl-3.0-standalone.html"><img alt="License: AGPL-3" src="https://img.shields.io/badge/licence-AGPL--3-blue.png" /></a> <a class="reference external" href="https://github.com/OCA/server-backend/tree/16.0/base_user_role_history"><img alt="OCA/server-backend" src="https://img.shields.io/badge/github-OCA%2Fserver--backend-lightgray.png?logo=github" /></a> <a class="reference external" href="https://translation.odoo-community.org/projects/server-backend-16-0/server-backend-16-0-base_user_role_history"><img alt="Translate me on Weblate" src="https://img.shields.io/badge/weblate-Translate%20me-F47D42.png" /></a> <a class="reference external" href="https://runbot.odoo-community.org/runbot/253/16.0"><img alt="Try me on Runbot" src="https://img.shields.io/badge/runbot-Try%20me-875A7B.png" /></a></p>
+<p>This addon provides history for roles modifications on users.
+Each time a role is added/updated/unlinked on a user, a new role history line
+is created mentioning what changes were made and who made them.
+Theses informations are directly accessible from users via a smart button.</p>
+<p><strong>Table of contents</strong></p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#usage" id="id1">Usage</a></li>
+<li><a class="reference internal" href="#known-issues-roadmap" id="id2">Known issues / Roadmap</a></li>
+<li><a class="reference internal" href="#bug-tracker" id="id3">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="id4">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="id5">Authors</a></li>
+<li><a class="reference internal" href="#contributors" id="id6">Contributors</a></li>
+<li><a class="reference internal" href="#maintainers" id="id7">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="usage">
+<h1><a class="toc-backref" href="#id1">Usage</a></h1>
+<p>Changes on user roles are easily accessible via a button on user form view.</p>
+</div>
+<div class="section" id="known-issues-roadmap">
+<h1><a class="toc-backref" href="#id2">Known issues / Roadmap</a></h1>
+<p>Since roles on role history line have ‘cascade’ ondelete, role deletion leads
+to role history line deletion. In order to keep history even in the case of
+a role deletion, module could be upgraded.</p>
+</div>
+<div class="section" id="bug-tracker">
+<h1><a class="toc-backref" href="#id3">Bug Tracker</a></h1>
+<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/server-backend/issues">GitHub Issues</a>.
+In case of trouble, please check there if your issue has already been reported.
+If you spotted it first, help us smashing it by providing a detailed and welcomed
+<a class="reference external" href="https://github.com/OCA/server-backend/issues/new?body=module:%20base_user_role_history%0Aversion:%2016.0%0A%0A**Steps%20to%20reproduce**%0A-%20...%0A%0A**Current%20behavior**%0A%0A**Expected%20behavior**">feedback</a>.</p>
+<p>Do not contact contributors directly about support or help with technical issues.</p>
+</div>
+<div class="section" id="credits">
+<h1><a class="toc-backref" href="#id4">Credits</a></h1>
+<div class="section" id="authors">
+<h2><a class="toc-backref" href="#id5">Authors</a></h2>
+<ul class="simple">
+<li>ACSONE SA/NV</li>
+</ul>
+</div>
+<div class="section" id="contributors">
+<h2><a class="toc-backref" href="#id6">Contributors</a></h2>
+<ul class="simple">
+<li>Benoit Aimont &lt;<a class="reference external" href="mailto:benoit.aimont&#64;acsone.eu">benoit.aimont&#64;acsone.eu</a>&gt; (<a class="reference external" href="https://acsone.eu">https://acsone.eu</a>)</li>
+<li>Thomas Binsfeld &lt;<a class="reference external" href="mailto:thomas.binsfeld&#64;acsone.eu">thomas.binsfeld&#64;acsone.eu</a>&gt; (<a class="reference external" href="https://acsone.eu">https://acsone.eu</a>)</li>
+</ul>
+</div>
+<div class="section" id="maintainers">
+<h2><a class="toc-backref" href="#id7">Maintainers</a></h2>
+<p>This module is maintained by the OCA.</p>
+<a class="reference external image-reference" href="https://odoo-community.org"><img alt="Odoo Community Association" src="https://odoo-community.org/logo.png" /></a>
+<p>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.</p>
+<p>Current <a class="reference external" href="https://odoo-community.org/page/maintainer-role">maintainer</a>:</p>
+<p><a class="reference external" href="https://github.com/ThomasBinsfeld"><img alt="ThomasBinsfeld" src="https://github.com/ThomasBinsfeld.png?size=40px" /></a></p>
+<p>This module is part of the <a class="reference external" href="https://github.com/OCA/server-backend/tree/16.0/base_user_role_history">OCA/server-backend</a> project on GitHub.</p>
+<p>You are welcome to contribute. To learn how please visit <a class="reference external" href="https://odoo-community.org/page/Contribute">https://odoo-community.org/page/Contribute</a>.</p>
+</div>
+</div>
+</div>
+</body>
+</html>
diff --git a/base_user_role_history/tests/__init__.py b/base_user_role_history/tests/__init__.py
new file mode 100644
index 00000000..c9a4ca3c
--- /dev/null
+++ b/base_user_role_history/tests/__init__.py
@@ -0,0 +1 @@
+from . import test_base_user_role_history
diff --git a/base_user_role_history/tests/test_base_user_role_history.py b/base_user_role_history/tests/test_base_user_role_history.py
new file mode 100644
index 00000000..fa81febf
--- /dev/null
+++ b/base_user_role_history/tests/test_base_user_role_history.py
@@ -0,0 +1,141 @@
+# Copyright 2019 ACSONE SA/NV
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).µ
+
+from datetime import date, timedelta
+
+from odoo.tests.common import TransactionCase
+
+
+class TestBaseUserRoleHistory(TransactionCase):
+    @classmethod
+    def setUpClass(cls):
+        super(TestBaseUserRoleHistory, cls).setUpClass()
+        cls.env = cls.env(context=dict(cls.env.context, tracking_disable=True))
+        # MODELS
+
+        cls.history_line_model = cls.env["base.user.role.line.history"]
+        cls.role_model = cls.env["res.users.role"]
+        cls.user_model = cls.env["res.users"]
+
+        # INSTANCE
+
+        cls.user_01 = cls.user_model.search([("id", "!=", cls.env.user.id)], limit=1)
+        cls.role_01 = cls.role_model.create({"name": "Role test 01"})
+
+    def test_write_role_lines_on_user(self):
+        """
+        Data :
+            - user with no role
+        Test case :
+            1) add a role
+            2) role modification with dates
+            3) role modification with no change
+            4) role unlink
+        Expected results :
+            1) new role history line created with performed_action == 'add'
+            2) new role history line created with performed_action == 'edit'
+            3) no new role history line created
+            4) new role history line created with performed_action == 'unlink'
+        """
+        # 1
+        history_lines_0 = self.history_line_model.search(
+            [("user_id", "=", self.user_01.id)]
+        )
+        self.assertFalse(history_lines_0)
+        self.user_01.write({"role_line_ids": [(0, 0, {"role_id": self.role_01.id})]})
+        history_lines_1 = self.history_line_model.search(
+            [("user_id", "=", self.user_01.id)]
+        )
+        self.assertTrue(history_lines_1)
+        self.assertEqual(len(history_lines_1), 1)
+        self.assertEqual(history_lines_1.performed_action, "add")
+        self.assertFalse(history_lines_1.old_role_id)
+        self.assertEqual(history_lines_1.new_role_id, self.role_01)
+        # 2
+        self.user_01.write(
+            {
+                "role_line_ids": [
+                    (
+                        1,
+                        self.user_01.role_line_ids[0].id,
+                        {
+                            "date_from": date.today(),
+                            "date_to": date.today() + timedelta(days=5),
+                        },
+                    )
+                ]
+            }
+        )
+        history_lines_2 = self.history_line_model.search(
+            [("user_id", "=", self.user_01.id), ("id", "not in", history_lines_1.ids)]
+        )
+        self.assertTrue(history_lines_2)
+        self.assertEqual(len(history_lines_2), 1)
+        self.assertEqual(history_lines_2.performed_action, "edit")
+        self.assertEqual(history_lines_2.old_role_id, self.role_01)
+        self.assertEqual(history_lines_2.new_role_id, self.role_01)
+        self.assertFalse(history_lines_2.old_date_from)
+        self.assertEqual(history_lines_2.new_date_from, date.today())
+        self.assertFalse(history_lines_2.old_date_to)
+        self.assertEqual(history_lines_2.new_date_to, date.today() + timedelta(days=5))
+        self.user_01.write(
+            {"role_line_ids": [(1, self.user_01.role_line_ids[0].id, {})]}
+        )
+        history_lines_3 = self.history_line_model.search(
+            [
+                ("user_id", "=", self.user_01.id),
+                ("id", "not in", (history_lines_1 | history_lines_2).ids),
+            ]
+        )
+        self.assertFalse(history_lines_3)
+        # 4
+        self.user_01.write(
+            {"role_line_ids": [(2, self.user_01.role_line_ids[0].id, False)]}
+        )
+        history_lines_4 = self.history_line_model.search(
+            [
+                ("user_id", "=", self.user_01.id),
+                ("id", "not in", (history_lines_1 | history_lines_2).ids),
+            ]
+        )
+        self.assertTrue(history_lines_4)
+        self.assertEqual(len(history_lines_4), 1)
+        self.assertEqual(history_lines_4.performed_action, "unlink")
+        self.assertEqual(history_lines_4.old_role_id, self.role_01)
+        self.assertFalse(history_lines_4.new_role_id)
+        self.assertEqual(history_lines_4.old_date_from, date.today())
+        self.assertFalse(history_lines_4.new_date_from)
+        self.assertEqual(history_lines_4.old_date_to, date.today() + timedelta(days=5))
+        self.assertFalse(history_lines_4.new_date_to)
+
+    def test_create_role_lines_on_new_user(self):
+        """
+        Data : /
+        Test case :
+            - create a user with a role
+        Expected results :
+            - new role history line created with performed_action == 'add'
+        """
+        new_user = self.user_model.create(
+            {
+                "login": "new_user",
+                "name": "new_user",
+                "role_line_ids": [(0, 0, {"role_id": self.role_01.id})],
+            }
+        )
+        history_lines = self.history_line_model.search([("user_id", "=", new_user.id)])
+        self.assertTrue(history_lines)
+        self.assertEqual(len(history_lines), 1)
+        self.assertEqual(history_lines.performed_action, "add")
+
+    def test_no_create_role_lines_on_new_user(self):
+        """
+        Data : /
+        Test case :
+            - create a user without role
+        Expected results :
+            - no role history line created
+        """
+        new_user = self.user_model.create({"login": "new_user", "name": "new_user"})
+        history_lines = self.history_line_model.search([("user_id", "=", new_user.id)])
+        self.assertFalse(history_lines)
diff --git a/base_user_role_history/views/base_user_role_line_history.xml b/base_user_role_history/views/base_user_role_line_history.xml
new file mode 100644
index 00000000..8031ba34
--- /dev/null
+++ b/base_user_role_history/views/base_user_role_line_history.xml
@@ -0,0 +1,92 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright 2019 ACSONE SA/NV
+     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
+<odoo>
+    <!--FORM view-->
+    <record model="ir.ui.view" id="base_user_role_line_history_form_view">
+        <field
+            name="name"
+        >base.user.role.line.history.form (in base_user_role_history)</field>
+        <field name="model">base.user.role.line.history</field>
+        <field name="arch" type="xml">
+            <form create="0" edit="0" delete="0">
+                <header>
+                </header>
+                <sheet>
+                    <group name="group_main" col="4">
+                        <field name="create_uid" string="Editor" />
+                        <field name="performed_action" />
+                        <field name="user_id" string="Edited user" />
+                        <field name="create_date" string="Date and time of edition" />
+                        <field name="old_role_id" />
+                        <field name="new_role_id" />
+                        <field name="old_date_from" />
+                        <field name="new_date_from" />
+                        <field name="old_date_to" />
+                        <field name="new_date_to" />
+                        <field name="old_is_enabled" />
+                        <field name="new_is_enabled" />
+                    </group>
+                </sheet>
+            </form>
+        </field>
+    </record>
+    <!--TREE view-->
+    <record model="ir.ui.view" id="base_user_role_line_history_tree_view">
+        <field
+            name="name"
+        >base.user.role.line.history.tree (in base_user_role_history)</field>
+        <field name="model">base.user.role.line.history</field>
+        <field name="arch" type="xml">
+            <tree
+                decoration-success="performed_action == 'add'"
+                decoration-danger="performed_action == 'unlink'"
+                create="0"
+                edit="0"
+                delete="0"
+            >
+                <field name="create_uid" string="Editor" />
+                <field name="create_date" string="Date and time of edition" />
+                <field name="performed_action" />
+                <field name="old_role_id" />
+                <field name="new_role_id" />
+                <field name="old_date_from" />
+                <field name="new_date_from" />
+                <field name="old_date_to" />
+                <field name="new_date_to" />
+                <field name="old_is_enabled" />
+                <field name="new_is_enabled" />
+            </tree>
+        </field>
+    </record>
+    <!--SEARCH view-->
+    <record model="ir.ui.view" id="base_user_role_line_history_search_view">
+        <field
+            name="name"
+        >base.user.role.line.history.search (in base_user_role_history)</field>
+        <field name="model">base.user.role.line.history</field>
+        <field name="arch" type="xml">
+            <search>
+                <field name="old_role_id" />
+                <field name="new_role_id" />
+                <group string="Group By" name="groupby">
+                    <filter
+                        name="group_by_old_role"
+                        string="Old role"
+                        context="{'group_by': 'old_role_id'}"
+                    />
+                    <filter
+                        name="group_by_new_role"
+                        string="New role"
+                        context="{'group_by': 'new_role_id'}"
+                    />
+                    <filter
+                        name="group_by_performed_action"
+                        string="Action"
+                        context="{'group_by': 'performed_action'}"
+                    />
+                </group>
+            </search>
+        </field>
+    </record>
+</odoo>
diff --git a/base_user_role_history/views/res_users.xml b/base_user_role_history/views/res_users.xml
new file mode 100644
index 00000000..0f659e06
--- /dev/null
+++ b/base_user_role_history/views/res_users.xml
@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<!-- Copyright 2019 ACSONE SA/NV
+     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl). -->
+<odoo>
+    <!--FORM view-->
+    <record model="ir.ui.view" id="res_users_form_view">
+        <field name="name">res.users.form (in base_user_role_history)</field>
+        <field name="model">res.users</field>
+        <field name="inherit_id" ref="base.view_users_form" />
+        <field name="arch" type="xml">
+            <div name="button_box" position="inside">
+                <button
+                    name="show_role_lines_history"
+                    help="Roles history"
+                    class="oe_stat_button"
+                    icon="fa-history"
+                    type="object"
+                >
+                    <div class="o_stat_info">
+                        <span class="o_stat_text">Last update of roles</span>
+                        <field
+                            class="o_stat_value"
+                            name="last_role_line_modification"
+                        />
+                    </div>
+                </button>
+            </div>
+        </field>
+    </record>
+</odoo>
diff --git a/setup/base_user_role_history/odoo/addons/base_user_role_history b/setup/base_user_role_history/odoo/addons/base_user_role_history
new file mode 120000
index 00000000..858c5021
--- /dev/null
+++ b/setup/base_user_role_history/odoo/addons/base_user_role_history
@@ -0,0 +1 @@
+../../../../base_user_role_history
\ No newline at end of file
diff --git a/setup/base_user_role_history/setup.py b/setup/base_user_role_history/setup.py
new file mode 100644
index 00000000..28c57bb6
--- /dev/null
+++ b/setup/base_user_role_history/setup.py
@@ -0,0 +1,6 @@
+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)