GOLEM/golem_family/views/golem_member_views.xml

<?xml version="1.0" encoding="utf-8"?>

<!--
Copyright 2017 Fabien Bourgeois <fabien@yaltik.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
-->

<odoo>
  <data>
    <!-- Form -->
    <record model="ir.ui.view" id="golem_member_form_inherit_golem_family">
      <field name="name">Member form adaptations</field>
      <field name="model">golem.member</field>
      <field name="inherit_id" ref="golem_member.golem_member_form" />
      <field name="arch" type="xml">
        <div name="buttons" position="inside">
          <button class="oe_inline oe_stat_button" type="object"
            name="button_family_members" icon="fa-users"
            attrs="{'invisible': [('family_id', '=', False)]}">
            <field string="family members" name="family_count"
              widget="statinfo" />
          </button>
        </div>
        <field name="lastname" position="before">
          <field name="family_id" />
          <field name="family_role" />
        </field>
      </field>
    </record>

  </data>
</odoo>