[ADD] calendar_attachment: Show attachments in modal window

calendar_attachment/README.rst

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+**This file is going to be generated by oca-gen-addon-readme.**
+
+*Manual changes will be overwritten.*
+
+Please provide content in the ``readme`` directory:
+
+* **DESCRIPTION.rst** (required)
+* INSTALL.rst (optional)
+* CONFIGURE.rst (optional)
+* **USAGE.rst** (optional, highly recommended)
+* DEVELOP.rst (optional)
+* ROADMAP.rst (optional)
+* HISTORY.rst (optional, recommended)
+* **CONTRIBUTORS.rst** (optional, highly recommended)
+* CREDITS.rst (optional)
+
+Content of this README will also be drawn from the addon manifest,
+from keys such as name, authors, maintainers, development_status,
+and license.
+
+A good, one sentence summary in the manifest is also highly recommended.
+
+
+Automatic changelog generation
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+`HISTORY.rst` can be auto generated using `towncrier <https://pypi.org/project/towncrier>`_.
+
+Just put towncrier compatible changelog fragments into `readme/newsfragments`
+and the changelog file will be automatically generated and updated when a new fragment is added.
+
+Please refer to `towncrier` documentation to know more.
+
+NOTE: the changelog will be automatically generated when using `/ocabot merge $option`.
+If you need to run it manually, refer to `OCA/maintainer-tools README <https://github.com/OCA/maintainer-tools>`_.

calendar_attachment/__init__.py

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+from . import models

calendar_attachment/__manifest__.py

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+{
+    "name": "Calendar Attachments",
+    "version": "16.0.1.0.0",
+    "category": "Productivity/Calendar",
+    "license": "AGPL-3",
+    "author": "Onestein,Odoo Community Association (OCA)",
+    "website": "https://github.com/OCA/calendar",
+    "depends": ["calendar"],
+    "data": [
+        "views/calendar_event_view.xml",
+    ],
+}

calendar_attachment/models/__init__.py

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+from . import calendar_event

calendar_attachment/models/calendar_event.py

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+from odoo import fields, models
+
+
+class CalendarEvent(models.Model):
+    _inherit = "calendar.event"
+
+    attachment_ids = fields.One2many(
+        comodel_name="ir.attachment",
+        inverse_name="res_id",
+        domain=[("res_model", "=", "calendar.event")],
+    )

calendar_attachment/readme/CONTRIBUTORS.md

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+- Dennis Sluijk <[email protected]> (https://onestein.nl)

calendar_attachment/readme/DESCRIPTION.md

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+The calendar view opens the form in a modal window therefore the chatter is not visible.
+This module adds a tab with the attachments on the event form, so the attachments are
+also accessible from the calendar view.
+
+![Calendar Event Modal Window](../static/description/screenshot.png)

calendar_attachment/views/calendar_event_view.xml

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+<?xml version="1.0" encoding="UTF-8" ?>
+<odoo>
+    <record id="view_calendar_event_form" model="ir.ui.view">
+        <field name="model">calendar.event</field>
+        <field name="inherit_id" ref="calendar.view_calendar_event_form" />
+        <field name="arch" type="xml">
+            <xpath expr="//notebook" position="inside">
+                <page name="attachments" string="Attachments">
+                    <field
+                        name="attachment_ids"
+                        widget="one2many"
+                        mode="kanban"
+                        context="{'default_res_model': 'calendar.event'}"
+                    />
+                </page>
+            </xpath>
+        </field>
+    </record>
+</odoo>

setup/calendar_attachment/odoo/addons/calendar_attachment

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+../../../../calendar_attachment

setup/calendar_attachment/setup.py

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+import setuptools
+
+setuptools.setup(
+    setup_requires=['setuptools-odoo'],
+    odoo_addon=True,
+)