smarticon_voucher_customer/res_partner_view.xml

<?xml version="1.0"?>
<openerp>
    <data>

        <record id="act_res_partner_2_voucher" model="ir.actions.act_window">
            <field name="name">Cobros/Pagos</field>
            <field name="res_model">account.voucher</field>
            <field name="view_mode">tree,form</field>
             <field name="context">{'search_default_partner_id': active_id}</field>
            <field name="view_id" eval="False"/>
            <field name="search_view_id" ref="account_voucher.view_voucher_filter_sale"/>
        </record>

        <record model="ir.actions.act_window.view" id="action_voucher_tree_view_customer">
            <field name="sequence" eval="1"/>
            <field name="view_mode">tree</field>
            <field name="view_id" ref="account_voucher.view_voucher_tree"/>
            <field name="act_window_id" ref="smarticon_voucher_customer.act_res_partner_2_voucher"/>
        </record>

        <record model="ir.actions.act_window.view" id="action_voucher_form_view_customer">
            <field name="sequence" eval="2"/>
            <field name="view_mode">form</field>
            <field name="view_id" ref="account_voucher.view_voucher_form"/>
            <field name="act_window_id" ref="smarticon_voucher_customer.act_res_partner_2_voucher"/>
        </record>

        <!-- Partner kanban view inherte -->
        <record model="ir.ui.view" id="voucher_partner_kanban_view">
            <field name="name">voucher.customer.kanban.inherit</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.res_partner_kanban_view"/>
            <field name="priority" eval="10"/>
            <field name="arch" type="xml">
                <field name="mobile" position="after">
                    <field name="voucher_count_customer"/>
                </field>
                <xpath expr="//div[@class='oe_kanban_partner_links']" position="inside">
                    <a name="%(smarticon_voucher_customer.act_res_partner_2_voucher)d" type="action" t-if="record.voucher_count_customer.value>0">
                        <t t-esc="record.voucher_count_customer.value"/> Cobros/Pagos
                    </a>
                </xpath>
            </field>
        </record>

        <!--  Partners inherited form -->
        <record id="view_partners_form_voucher_customer" model="ir.ui.view">
            <field name="name">view.res.partner.voucher.buttons</field>
            <field name="model">res.partner</field>
            <field name="inherit_id" ref="base.view_partner_form"/>
                <!-- <field name="domain">[('customer','=',True)]</field> -->
            <field name="priority" eval="55"/>
            <field name="arch" type="xml">
                    <xpath expr="//div[@name='buttons']" position="inside">
                        <button class="oe_inline oe_stat_button" type="action" name="%(smarticon_voucher_customer.act_res_partner_2_voucher)d"
                          attrs="{'invisible': [('active', '=', False)]}"
                          icon="fa-star"
                          context="{'search_default_partner_id': active_id}">
                          <field string="Cobros/Pagos" name="voucher_count_customer" widget="statinfo"/>
                        </button>
                    </xpath>
            </field>
        </record>

    </data>
</openerp>