vertical-cooperative/easy_my_coop_loan/views/partner_view.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright 2019 Coop IT Easy
     License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl).
-->
<odoo>
    <record id="view_partner_form_loan_issue" model="ir.ui.view">
        <field name="name">res.partner.form.loan.issue</field>
        <field name="model">res.partner</field>
        <field name="inherit_id"
               ref="easy_my_coop.view_partner_form_easy_my_coop"/>
        <field name="arch" type="xml">
            <page name="share_subscription" position="after">
                <page string="Loan issue lines" name="loan_issue_lines"
                      groups="easy_my_coop.group_easy_my_coop_user">
                    <group>
                        <field name="is_loaner"/>
                    </group>
                    <field name="loan_line_ids">
                        <tree>
                            <!--                         <tree create="false" delete="false" edit="false">-->
                            <field name="loan_issue_id"/>
                            <field name="date"/>
                            <field name="quantity"/>
                            <field name="face_value"/>
                            <field name="amount"/>
                            <field name="state"/>
                        </tree>
                    </field>
                </page>
            </page>
        </field>
    </record>

    <record id="view_res_partner_loaner_filter" model="ir.ui.view">
        <field name="name">res.partner.select</field>
        <field name="model">res.partner</field>
        <field name="inherit_id" ref="base.view_res_partner_filter"/>
        <field name="arch" type="xml">
            <xpath expr="//filter[@name='supplier']" position='after'>
                <filter string="Loaners" name="loaners"
                        domain="[('is_loaner','=',1)]" help="Loaning Partners"/>
            </xpath>
        </field>
    </record>

    <record id="action_loaners" model="ir.actions.act_window">
        <field name="name">Loaners</field>
        <field name="res_model">res.partner</field>
        <field name="view_type">form</field>
        <field name="view_mode">kanban,tree,form</field>
        <field name="context">{'search_default_loaners':1}</field>
    </record>
</odoo>