partner-contact/partner_multi_relation/views/res_partner_relation_all.xml

<?xml version="1.0" encoding="UTF-8"?>
<odoo>

        <record id="tree_res_partner_relation_all" model="ir.ui.view">
            <field name="model">res.partner.relation.all</field>
            <field name="arch" type="xml">
                <tree
                    string="Partner Relations"
                    colors="gray:not active; blue:date_start &gt; current_date"
                    editable="top"
                    >
                    <field
                        name="this_partner_id"
                        required="True"
                        options="{'no_create': True}"
                        />
                    <field
                        name="type_selection_id"
                        required="True"
                        options="{'no_create': True}"
                        />
                    <field
                        name="other_partner_id"
                        required="True"
                        options="{'no_create': True}"
                        />
                    <field name="date_start" />
                    <field name="date_end" />
                    <field name="active" invisible="1" />
                </tree>
            </field>
        </record>

        <record id="search_res_partner_relation_all" model="ir.ui.view">
            <field name="model">res.partner.relation.all</field>
            <field name="arch" type="xml">
                <search string="Search Relations">
                    <field name="any_partner_id" widget="many2one"/>
                    <field name="this_partner_id"/>
                    <field name="other_partner_id"/>
                    <field name="type_selection_id"/>
                    <filter
                        string="Left to right"
                        domain="[('is_inverse', '=', False)]"
                        />
                    <filter
                        string="Right to left"
                        domain="[('is_inverse', '=', True)]"
                        />
                    <filter
                        string="Include past records"
                        context="{'active_test': False}"
                        />
                    <group expand="0" string="Group By">
                        <filter
                            string="One Partner"
                            context="{'group_by': 'this_partner_id'}"
                            />
                        <filter
                            string="Relationship Type"
                            context="{'group_by': 'type_selection_id'}"
                            />
                        <filter
                            string="Other Partner"
                            context="{'group_by': 'other_partner_id'}"
                            />
                    </group>
                </search>
            </field>
        </record>

        <record
            id="action_res_partner_relation_all"
            model="ir.actions.act_window"
            >
            <field name="name">Relations</field>
            <field name="res_model">res.partner.relation.all</field>
            <field name="view_type">form</field>
            <field name="view_mode">tree</field>
            <field name="view_id" ref="tree_res_partner_relation_all"/>
            <field
                name="search_view_id"
                ref="search_res_partner_relation_all"
                />
            <field name="context">{'active_test': 0}</field>
            <field name="help" type="html">
                <p class="oe_view_nocontent_create">
                    Record and track your partners' relations. Relations may
                    be linked to other partners with a type either directly
                    or inversely.
                </p>
            </field>
        </record>

</odoo>