trytond-sale_supply_production/sale.xml

<tryton>
    <data>
        <!-- sale -->
        <record model="ir.ui.view" id="sale_view_form">
            <field name="model">sale.sale</field>
            <field name="type" eval="None"/>
            <field name="inherit" ref="sale.sale_view_form"/>
            <field name="name">sale_form</field>
        </record>
        <!-- sale.line -->
        <record model="ir.ui.view" id="sale_line_view_form">
            <field name="model">sale.line</field>
            <field name="type" eval="None"/>
            <field name="inherit" ref="sale.sale_line_view_form"/>
            <field name="name">sale_line_form</field>
        </record>
        <record model="ir.ui.view" id="sale_line_view_tree_sequence">
            <field name="model">sale.line</field>
            <field name="inherit" ref="sale.sale_line_view_tree_sequence"/>
            <field name="name">sale_line_tree_sequence</field>
        </record>
        <!-- relates -->
        <record model="ir.action.act_window" id="act_production_form">
            <field name="name">Productions</field>
            <field name="res_model">production</field>
            <field name="domain"
                eval="[('origin.sale.id', 'in', Eval('active_ids'), 'sale.line')]"
                pyson="1"/>
        </record>
        <record model="ir.action.keyword"
                id="act_open_production_keyword1">
            <field name="keyword">form_relate</field>
            <field name="model">sale.sale,-1</field>
            <field name="action" ref="act_production_form"/>
        </record>
    </data>
</tryton>