diff --git a/web_widget_x2many_2d_matrix_example/README.rst b/web_widget_x2many_2d_matrix_example/README.rst
new file mode 100644
index 000000000..67843ee97
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/README.rst
@@ -0,0 +1,74 @@
+===================================
+web_widget_x2many_2d_matrix example
+===================================
+
+.. !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+   !! 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%2Fweb-lightgray.png?logo=github
+    :target: https://github.com/OCA/web/tree/13.0/web_widget_x2many_2d_matrix_example
+    :alt: OCA/web
+.. |badge4| image:: https://img.shields.io/badge/weblate-Translate%20me-F47D42.png
+    :target: https://translation.odoo-community.org/projects/web-13-0/web-13-0-web_widget_x2many_2d_matrix_example
+    :alt: Translate me on Weblate
+.. |badge5| image:: https://img.shields.io/badge/runbot-Try%20me-875A7B.png
+    :target: https://runbot.odoo-community.org/runbot/162/13.0
+    :alt: Try me on Runbot
+
+|badge1| |badge2| |badge3| |badge4| |badge5| 
+
+Install it and click on the menu item `Demo x2m matrix widget`.
+
+**Table of contents**
+
+.. contents::
+   :local:
+
+Bug Tracker
+===========
+
+Bugs are tracked on `GitHub Issues <https://github.com/OCA/web/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/web/issues/new?body=module:%20web_widget_x2many_2d_matrix_example%0Aversion:%2013.0%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
+~~~~~~~
+
+* Camptocamp
+
+Contributors
+~~~~~~~~~~~~
+
+* Simone Orsi <simone.orsi@camptocamp.com>
+* Anand Kansagra <kansagraanand@hotmail.com>
+
+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.
+
+This module is part of the `OCA/web <https://github.com/OCA/web/tree/13.0/web_widget_x2many_2d_matrix_example>`_ project on GitHub.
+
+You are welcome to contribute. To learn how please visit https://odoo-community.org/page/Contribute.
diff --git a/web_widget_x2many_2d_matrix_example/__init__.py b/web_widget_x2many_2d_matrix_example/__init__.py
new file mode 100644
index 000000000..d6c56a95f
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/__init__.py
@@ -0,0 +1,3 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from . import models
+from . import wizard
diff --git a/web_widget_x2many_2d_matrix_example/__manifest__.py b/web_widget_x2many_2d_matrix_example/__manifest__.py
new file mode 100644
index 000000000..df95e5e9a
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/__manifest__.py
@@ -0,0 +1,18 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+{
+    "name": "web_widget_x2many_2d_matrix example",
+    "summary": "A small example on how to use `web_widget_x2many_2d_matrix`.",
+    "version": "13.0.1.0.0",
+    "author": "Camptocamp, " "Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/web",
+    "license": "AGPL-3",
+    "category": "Hidden/Dependency",
+    "depends": ["web_widget_x2many_2d_matrix"],
+    "data": [
+        "security/ir.model.access.csv",
+        "demo/x2m.demo.csv",
+        "views/x2m_demo.xml",
+        "wizard/x2m_matrix.xml",
+    ],
+    "installable": True,
+}
diff --git a/web_widget_x2many_2d_matrix_example/demo/x2m.demo.csv b/web_widget_x2many_2d_matrix_example/demo/x2m.demo.csv
new file mode 100644
index 000000000..9a8b5aa11
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/demo/x2m.demo.csv
@@ -0,0 +1,20 @@
+id,name,line_ids/user_id/id,line_ids/name,line_ids/value
+web_widget_x2many_2d_matrix_example.x2m_demo_5,One,,,
+,,base.user_demo,A,1
+,,base.user_demo,B,2
+,,base.user_demo,C,3
+web_widget_x2many_2d_matrix_example.x2m_demo_3,Two,,,
+,,base.user_demo,E,5
+,,base.user_demo,F,6
+web_widget_x2many_2d_matrix_example.x2m_demo_2,Three,,,
+,,base.user_root,G,8
+,,base.user_demo,H,9
+,,base.user_root,I,10
+web_widget_x2many_2d_matrix_example.x2m_demo_1,Four,,,
+,,base.user_root,L,12
+,,base.user_demo,M,13
+,,base.user_demo,N,14
+,,base.user_demo,O,15
+,,base.user_root,P,16
+web_widget_x2many_2d_matrix_example.x2m_demo_4,Five,,,
+,,base.user_demo,Q,18
diff --git a/web_widget_x2many_2d_matrix_example/i18n/web_widget_x2many_2d_matrix_example.pot b/web_widget_x2many_2d_matrix_example/i18n/web_widget_x2many_2d_matrix_example.pot
new file mode 100644
index 000000000..2a35dc195
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/i18n/web_widget_x2many_2d_matrix_example.pot
@@ -0,0 +1,147 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+#	* web_widget_x2many_2d_matrix_example
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 12.0\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: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__create_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__create_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__create_uid
+msgid "Created by"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__create_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__create_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__create_date
+msgid "Created on"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.actions.act_window,name:web_widget_x2many_2d_matrix_example.action_x2m_demo
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__demo_id
+msgid "Demo"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.ui.menu,name:web_widget_x2many_2d_matrix_example.base_matrix_widget_menu
+msgid "Demo x2m matrix widget"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__display_name
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__display_name
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__display_name
+msgid "Display Name"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__id
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__id
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__id
+msgid "ID"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo____last_update
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line____last_update
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz____last_update
+msgid "Last Modified on"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__write_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__write_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__write_uid
+msgid "Last Updated by"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__write_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__write_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__write_date
+msgid "Last Updated on"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__line_ids
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__line_ids
+msgid "Line"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__name
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__name
+msgid "Name"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model_terms:ir.ui.view,arch_db:web_widget_x2many_2d_matrix_example.view_x2m_demo_form
+msgid "Try x2m 2d matrix"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model_terms:ir.ui.view,arch_db:web_widget_x2many_2d_matrix_example.view_x2m_demo_form
+msgid "Try x2m 2d matrix (many2one)"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model_terms:ir.ui.view,arch_db:web_widget_x2many_2d_matrix_example.view_x2m_demo_form
+msgid "Try x2m 2d matrix (selection)"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__user_id
+msgid "User"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__value
+msgid "Value"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: selection:x2m.demo.line,value_selection:0
+msgid "Value 1"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: selection:x2m.demo.line,value_selection:0
+msgid "Value 2"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__value_many2one
+msgid "Value Many2One"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__value_selection
+msgid "Value Selection"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model,name:web_widget_x2many_2d_matrix_example.model_x2m_demo
+msgid "X2Many Demo"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model,name:web_widget_x2many_2d_matrix_example.model_x2m_demo_line
+msgid "X2Many Demo Line"
+msgstr ""
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model,name:web_widget_x2many_2d_matrix_example.model_x2m_matrix_demo_wiz
+msgid "X2Many Matrix Demo Wizard"
+msgstr ""
+
diff --git a/web_widget_x2many_2d_matrix_example/i18n/zh_CN.po b/web_widget_x2many_2d_matrix_example/i18n/zh_CN.po
new file mode 100644
index 000000000..db6dcf62e
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/i18n/zh_CN.po
@@ -0,0 +1,149 @@
+# Translation of Odoo Server.
+# This file contains the translation of the following modules:
+# 	* web_widget_x2many_2d_matrix_example
+#
+msgid ""
+msgstr ""
+"Project-Id-Version: Odoo Server 12.0\n"
+"Report-Msgid-Bugs-To: \n"
+"PO-Revision-Date: 2019-09-17 19:24+0000\n"
+"Last-Translator: 黎伟杰 <674416404@qq.com>\n"
+"Language-Team: none\n"
+"Language: zh_CN\n"
+"MIME-Version: 1.0\n"
+"Content-Type: text/plain; charset=UTF-8\n"
+"Content-Transfer-Encoding: \n"
+"Plural-Forms: nplurals=1; plural=0;\n"
+"X-Generator: Weblate 3.8\n"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__create_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__create_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__create_uid
+msgid "Created by"
+msgstr "创建者"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__create_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__create_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__create_date
+msgid "Created on"
+msgstr "创建时间"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.actions.act_window,name:web_widget_x2many_2d_matrix_example.action_x2m_demo
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__demo_id
+msgid "Demo"
+msgstr "演示"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.ui.menu,name:web_widget_x2many_2d_matrix_example.base_matrix_widget_menu
+msgid "Demo x2m matrix widget"
+msgstr "演示x2m矩阵小部件"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__display_name
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__display_name
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__display_name
+msgid "Display Name"
+msgstr "显示名称"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__id
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__id
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__id
+msgid "ID"
+msgstr "ID"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo____last_update
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line____last_update
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz____last_update
+msgid "Last Modified on"
+msgstr "最后修改时间"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__write_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__write_uid
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__write_uid
+msgid "Last Updated by"
+msgstr "最后更新者"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__write_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__write_date
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__write_date
+msgid "Last Updated on"
+msgstr "最后更新时间"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__line_ids
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_matrix_demo_wiz__line_ids
+msgid "Line"
+msgstr "行"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo__name
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__name
+msgid "Name"
+msgstr "名称"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model_terms:ir.ui.view,arch_db:web_widget_x2many_2d_matrix_example.view_x2m_demo_form
+msgid "Try x2m 2d matrix"
+msgstr "试试x2m 2d矩阵"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model_terms:ir.ui.view,arch_db:web_widget_x2many_2d_matrix_example.view_x2m_demo_form
+msgid "Try x2m 2d matrix (many2one)"
+msgstr "试试x2m 2d矩阵(many2one)"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model_terms:ir.ui.view,arch_db:web_widget_x2many_2d_matrix_example.view_x2m_demo_form
+msgid "Try x2m 2d matrix (selection)"
+msgstr "试试x2m 2d矩阵 (selection)"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__user_id
+msgid "User"
+msgstr "用户"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__value
+msgid "Value"
+msgstr "值"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: selection:x2m.demo.line,value_selection:0
+msgid "Value 1"
+msgstr "值1"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: selection:x2m.demo.line,value_selection:0
+msgid "Value 2"
+msgstr "值2"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__value_many2one
+msgid "Value Many2One"
+msgstr "值 Many2One"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model.fields,field_description:web_widget_x2many_2d_matrix_example.field_x2m_demo_line__value_selection
+msgid "Value Selection"
+msgstr "值Selection"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model,name:web_widget_x2many_2d_matrix_example.model_x2m_demo
+msgid "X2Many Demo"
+msgstr "X2Many演示"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model,name:web_widget_x2many_2d_matrix_example.model_x2m_demo_line
+msgid "X2Many Demo Line"
+msgstr "X2Many演示行"
+
+#. module: web_widget_x2many_2d_matrix_example
+#: model:ir.model,name:web_widget_x2many_2d_matrix_example.model_x2m_matrix_demo_wiz
+msgid "X2Many Matrix Demo Wizard"
+msgstr "X2Many Matrix演示向导"
diff --git a/web_widget_x2many_2d_matrix_example/models/__init__.py b/web_widget_x2many_2d_matrix_example/models/__init__.py
new file mode 100644
index 000000000..bf8b6ac47
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/models/__init__.py
@@ -0,0 +1,2 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from . import x2m_demo
diff --git a/web_widget_x2many_2d_matrix_example/models/x2m_demo.py b/web_widget_x2many_2d_matrix_example/models/x2m_demo.py
new file mode 100644
index 000000000..c8a1dd25c
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/models/x2m_demo.py
@@ -0,0 +1,48 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from odoo import fields, models
+
+
+class X2MDemo(models.Model):
+    _name = "x2m.demo"
+    _description = "X2Many Demo"
+
+    name = fields.Char()
+    line_ids = fields.One2many("x2m.demo.line", "demo_id")
+
+    def _open_x2m_matrix(self, view_xmlid):
+        wiz = self.env["x2m.matrix.demo.wiz"].create({})
+        view_id = self.env.ref(
+            "web_widget_x2many_2d_matrix_example.%s" % view_xmlid,
+        ).id
+        return {
+            "name": "Try x2many 2D matrix widget",
+            "type": "ir.actions.act_window",
+            "view_type": "form",
+            "view_mode": "form",
+            "res_model": "x2m.matrix.demo.wiz",
+            "target": "new",
+            "res_id": wiz.id,
+            "view_id": view_id,
+            "context": self.env.context,
+        }
+
+    def open_x2m_matrix(self):
+        return self._open_x2m_matrix("x2many_2d_matrix_demo")
+
+    def open_x2m_matrix_selection(self):
+        return self._open_x2m_matrix("x2many_2d_matrix_demo_selection")
+
+    def open_x2m_matrix_many2one(self):
+        return self._open_x2m_matrix("x2many_2d_matrix_demo_many2one")
+
+
+class X2MDemoLine(models.Model):
+    _name = "x2m.demo.line"
+    _description = "X2Many Demo Line"
+
+    name = fields.Char()
+    demo_id = fields.Many2one("x2m.demo")
+    user_id = fields.Many2one("res.users")
+    value = fields.Integer()
+    value_selection = fields.Selection([("val1", "Value 1"), ("val2", "Value 2")],)
+    value_many2one = fields.Many2one("res.groups")
diff --git a/web_widget_x2many_2d_matrix_example/readme/CONTRIBUTORS.rst b/web_widget_x2many_2d_matrix_example/readme/CONTRIBUTORS.rst
new file mode 100644
index 000000000..1fee00cb0
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/readme/CONTRIBUTORS.rst
@@ -0,0 +1,2 @@
+* Simone Orsi <simone.orsi@camptocamp.com>
+* Anand Kansagra <kansagraanand@hotmail.com>
diff --git a/web_widget_x2many_2d_matrix_example/readme/DESCRIPTION.rst b/web_widget_x2many_2d_matrix_example/readme/DESCRIPTION.rst
new file mode 100644
index 000000000..1af8b59ef
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/readme/DESCRIPTION.rst
@@ -0,0 +1 @@
+Install it and click on the menu item `Demo x2m matrix widget`.
diff --git a/web_widget_x2many_2d_matrix_example/security/ir.model.access.csv b/web_widget_x2many_2d_matrix_example/security/ir.model.access.csv
new file mode 100644
index 000000000..ff2b0388d
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/security/ir.model.access.csv
@@ -0,0 +1,5 @@
+id,name,model_id:id,group_id:id,perm_read,perm_write,perm_create,perm_unlink
+access_x2m_demo_line,access_x2m_demo_line,model_x2m_demo_line,base.group_user,1,0,0,0
+access_x2m_demo_line_admin,access_x2m_demo_line_admin,model_x2m_demo_line,base.group_system,1,1,1,1
+access_x2m_demo,access_x2m_demo,model_x2m_demo,base.group_user,1,0,0,0
+access_x2m_demo_admin,access_x2m_demo_admin,model_x2m_demo,base.group_system,1,1,1,1
diff --git a/web_widget_x2many_2d_matrix_example/static/description/icon.png b/web_widget_x2many_2d_matrix_example/static/description/icon.png
new file mode 100644
index 000000000..3a0328b51
Binary files /dev/null and b/web_widget_x2many_2d_matrix_example/static/description/icon.png differ
diff --git a/web_widget_x2many_2d_matrix_example/static/description/index.html b/web_widget_x2many_2d_matrix_example/static/description/index.html
new file mode 100644
index 000000000..59b905f00
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/static/description/index.html
@@ -0,0 +1,420 @@
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+<body>
+<div class="document" id="web-widget-x2many-2d-matrix-example">
+<h1 class="title">web_widget_x2many_2d_matrix example</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/web/tree/13.0/web_widget_x2many_2d_matrix_example"><img alt="OCA/web" src="https://img.shields.io/badge/github-OCA%2Fweb-lightgray.png?logo=github" /></a> <a class="reference external" href="https://translation.odoo-community.org/projects/web-13-0/web-13-0-web_widget_x2many_2d_matrix_example"><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/162/13.0"><img alt="Try me on Runbot" src="https://img.shields.io/badge/runbot-Try%20me-875A7B.png" /></a></p>
+<p>Install it and click on the menu item <cite>Demo x2m matrix widget</cite>.</p>
+<p><strong>Table of contents</strong></p>
+<div class="contents local topic" id="contents">
+<ul class="simple">
+<li><a class="reference internal" href="#bug-tracker" id="id1">Bug Tracker</a></li>
+<li><a class="reference internal" href="#credits" id="id2">Credits</a><ul>
+<li><a class="reference internal" href="#authors" id="id3">Authors</a></li>
+<li><a class="reference internal" href="#contributors" id="id4">Contributors</a></li>
+<li><a class="reference internal" href="#maintainers" id="id5">Maintainers</a></li>
+</ul>
+</li>
+</ul>
+</div>
+<div class="section" id="bug-tracker">
+<h1><a class="toc-backref" href="#id1">Bug Tracker</a></h1>
+<p>Bugs are tracked on <a class="reference external" href="https://github.com/OCA/web/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/web/issues/new?body=module:%20web_widget_x2many_2d_matrix_example%0Aversion:%2013.0%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="#id2">Credits</a></h1>
+<div class="section" id="authors">
+<h2><a class="toc-backref" href="#id3">Authors</a></h2>
+<ul class="simple">
+<li>Camptocamp</li>
+</ul>
+</div>
+<div class="section" id="contributors">
+<h2><a class="toc-backref" href="#id4">Contributors</a></h2>
+<ul class="simple">
+<li>Simone Orsi &lt;<a class="reference external" href="mailto:simone.orsi&#64;camptocamp.com">simone.orsi&#64;camptocamp.com</a>&gt;</li>
+<li>Anand Kansagra &lt;<a class="reference external" href="mailto:kansagraanand&#64;hotmail.com">kansagraanand&#64;hotmail.com</a>&gt;</li>
+</ul>
+</div>
+<div class="section" id="maintainers">
+<h2><a class="toc-backref" href="#id5">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>This module is part of the <a class="reference external" href="https://github.com/OCA/web/tree/13.0/web_widget_x2many_2d_matrix_example">OCA/web</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/web_widget_x2many_2d_matrix_example/wizard/__init__.py b/web_widget_x2many_2d_matrix_example/wizard/__init__.py
new file mode 100644
index 000000000..e8c3b4552
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/wizard/__init__.py
@@ -0,0 +1,2 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from . import x2m_matrix
diff --git a/web_widget_x2many_2d_matrix_example/wizard/x2m_matrix.py b/web_widget_x2many_2d_matrix_example/wizard/x2m_matrix.py
new file mode 100644
index 000000000..0e7477b7f
--- /dev/null
+++ b/web_widget_x2many_2d_matrix_example/wizard/x2m_matrix.py
@@ -0,0 +1,34 @@
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
+from odoo import fields, models
+
+
+class X2mMatrixDemoWiz(models.TransientModel):
+    _name = "x2m.matrix.demo.wiz"
+    _description = "X2Many Matrix Demo Wizard"
+
+    line_ids = fields.Many2many(
+        "x2m.demo.line", default=lambda self: self._default_line_ids()
+    )
+
+    def _default_line_ids(self):
+        """take care that the widget gets records passed for every combination
+        of x2m.demo and res.users involved"""
+        recs = self.env["x2m.demo"].search([])
+        users = self.env["x2m.demo.line"].search([]).mapped("user_id")
+        return [
+            (
+                0,
+                0,
+                {
+                    "name": "{}'s task on {}".format(usr.name, rec.name),
+                    "demo_id": rec.id,
+                    "user_id": usr.id,
+                },
+            )
+            # if there isn't a demo line record for the user, create a new one
+            if not rec.line_ids.filtered(lambda x: x.user_id == usr) else
+            # otherwise, return the line
+            (4, rec.line_ids.filtered(lambda x: x.user_id == usr)[0].id)
+            for rec in recs
+            for usr in users
+        ]