<?xml version="1.0"?>
<calendar date_start="date_start" date_stop="date" string="Projects" mode="month" scales="month,year" event_open_popup="true" quick_add="false" color="color">
                    <field name="partner_id" attrs="{'invisible': [('partner_id', '=', False)]}"/>
                    <field name="user_id" widget="many2one_avatar_user" attrs="{'invisible': [('user_id', '=', False)]}"/>
                    <field name="is_favorite" widget="boolean_favorite" nolabel="1" string="Favorite"/>
                    <field name="stage_id" groups="project.group_project_stages"/>
                    <field name="last_update_color" invisible="1"/>
                    <field name="last_update_status" string="Status" widget="status_with_color" options="{'color_field': 'last_update_color'}"/>
                    <field name="tag_ids" widget="many2many_tags" options="{'color_field': 'color'}" attrs="{'invisible': [('tag_ids', '=', [])]}"/>
                </calendar>
            