tra_backend/diet_template/views/sale_order_view.xml

<odoo>

    <record id="sale_order_form_view_inherit_diet" model="ir.ui.view">
        <field name="name">sale.order.form.inherit.diet</field>
        <field name="model">sale.order</field>
        <field name="inherit_id" ref="sale.view_order_form"/>
        <field name="arch" type="xml">
            <field name="partner_id" position="attributes">
                <attribute name="domain">
                    [('is_member','=?',context.get('is_diet_sale'))]
                </attribute>
            </field>
            <field name="product_id" position="attributes">
                <attribute name="domain">
                    [('is_food','=?',context.get('is_diet_sale')),
                    ('type','!=','service')]
                </attribute>
            </field>
        </field>
    </record>

    <record id="action_sale_order_dite" model="ir.actions.act_window">
        <field name="name">Sales</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">sale.order</field>
        <field name="binding_view_types">form</field>
        <field name="view_mode">tree,form</field>
        <field name="view_id" ref="sale.view_order_tree"/>
        <field name="context">{'is_diet_sale': True}</field>
    </record>

    <!-- <menuitem id="menu_sales_items" action="action_sale_order_dite"
              parent="menu_diet_main" sequence="2"
              groups='gym.group_gym_operator,gym.group_gym_manager'/> -->

</odoo>