stock-rma/rma/views/rma_order_view.xml

<?xml version="1.0" ?>
<odoo>
    <record id="view_rma_tree" model="ir.ui.view">
        <field name="name">rma.order.tree</field>
        <field name="model">rma.order</field>
        <field name="arch" type="xml">
            <tree name="RMA">
                <field name="name" />
                <field name="reference" />
                <field name="partner_id" groups="base.group_user" string="Customer" />
                <field name="date_rma" />
            </tree>
        </field>
    </record>

    <record id="view_rma_supplier_tree" model="ir.ui.view">
        <field name="name">rma.order.supplier.tree</field>
        <field name="model">rma.order</field>
        <field name="arch" type="xml">
            <tree name="RMA">
                <field name="name" />
                <field name="reference" />
                <field name="partner_id" groups="base.group_user" string="Supplier" />
                <field name="date_rma" />
            </tree>
        </field>
    </record>

    <record id="view_rma_form" model="ir.ui.view">
        <field name="name">rma.order.form</field>
        <field name="model">rma.order</field>
        <field name="arch" type="xml">
            <form string="RMA">
            <header />
            <sheet name='rma' string="RMA">
                <div class="oe_button_box" name="button_box">
                    <button
                            type="object"
                            name="action_view_in_shipments"
                            class="oe_stat_button"
                            icon="fa-truck"
                            groups="stock.group_stock_user"
                        >
                        <field
                                name="in_shipment_count"
                                widget="statinfo"
                                string="Shipments"
                            />
                    </button>
                    <button
                            type="object"
                            name="action_view_out_shipments"
                            class="oe_stat_button"
                            icon="fa-truck"
                            groups="stock.group_stock_user"
                        >
                        <field
                                name="out_shipment_count"
                                widget="statinfo"
                                string="Deliveries"
                            />
                    </button>
                    <button
                            type="object"
                            name="action_view_lines"
                            class="oe_stat_button"
                            icon="fa-list"
                            groups="rma.group_rma_customer_user"
                        >
                        <field name="line_count" widget="statinfo" string="RMA Lines" />
                    </button>
                    <button
                            type="object"
                            name="action_view_supplier_lines"
                            class="oe_stat_button"
                            attrs="{'invisible':[('supplier_line_count', '=', 0)]}"
                            icon="fa-list"
                            groups="rma.group_rma_supplier_user"
                        >
                        <field
                                name="supplier_line_count"
                                widget="statinfo"
                                string="Rel. RMA Lines"
                            />
                    </button>
                </div>
                <div class="oe_title" name="title">
                    <h1>
                        <field name="name" readonly="1" />
                    </h1>
                </div>
                <group>
                    <group name="info">
                        <field name="type" readonly="1" invisible="1" />
                        <field
                                name="partner_id"
                                context="{'res_partner_search_mode': 'customer'}"
                                string="Customer"
                            />
                        <field
                                name="reference"
                                attrs="{'invisible':[('type', '!=', 'supplier')]}"
                            />
                        <field
                                name="date_rma"
                                attrs="{'readonly':[('state', '!=', 'draft')]}"
                            />
                    </group>
                    <group name="contact">
                        <field name="requested_by" readonly="1" />
                        <field
                                name="assigned_to"
                                attrs="{'readonly':[('state', '!=', 'draft')]}"
                            />
                        <field name="company_id" groups="base.group_multi_company" />
                    </group>
                </group>
                <group>
                    <group name="inbound_route" string="Inbound">
                        <field
                                name="in_warehouse_id"
                                attrs="{'readonly':[('state', '!=', 'draft')]}"
                            />
                        <field
                                name="customer_to_supplier"
                                attrs="{'readonly':[('state', '!=', 'draft')],
                                'invisible':[('type', '!=', 'customer')]}"
                            />
                        <field name="state" invisible="1" />
                        <field
                                name="supplier_address_id"
                                context="{'show_address': 1}"
                                options="{'always_reload': 1}"
                                attrs="{'required':[('customer_to_supplier', '=', True)],
                                       'invisible':[('customer_to_supplier', '=', False)],
                                       'readonly':[('state', '!=', 'draft')]}"
                            />
                    </group>
                </group>
                <group>
                    <group name="comments" string="Description" colspan="2">
                        <field
                                name="description"
                                placeholder="This description will be copied to RMA lines."
                            />
                        <field
                                name="comment"
                                placeholder="Additional information will be printed in RMA group report."
                            />
                    </group>
                </group>
                <notebook colspan="4">
                    <page string="RMA Lines" name="lines">
                        <field
                                name="rma_line_ids"
                                context="{'default_rma_id': active_id,
                                                             'default_partner_id': partner_id,
                                                             'hide_title': True}"
                            >
                            <tree
                                    name="lines"
                                    editable="bottom"
                                    default_order="id asc"
                                    create="0"
                                >
                                <field name="sequence" widget="handle" />
                                <field name="state" invisible="True" />
                                <field name="partner_id" invisible="True" />
                                <field name="product_id" />
                                <field
                                        name="lot_id"
                                        groups="stock.group_production_lot"
                                        domain="[('product_id', '=', product_id)]"
                                        context="{'default_product_id': product_id}"
                                    />
                                <field name="name" />
                                <field name="uom_id" groups="uom.group_uom" />
                                <field name="operation_id" />
                                <field name="location_id" invisible="True" />
                                <field name="in_route_id" invisible="True" />
                                <field name="out_route_id" invisible="True" />
                                <field name="in_warehouse_id" invisible="True" />
                                <field name="out_warehouse_id" invisible="True" />
                                <field name="customer_to_supplier" invisible="True" />
                                <field name="supplier_address_id" invisible="True" />
                                <field name="supplier_to_customer" invisible="True" />
                                <field name="customer_address_id" invisible="True" />
                                <field name="receipt_policy" invisible="True" />
                                <field name="delivery_policy" invisible="True" />
                                <field name="delivery_address_id" invisible="True" />
                                <field name="product_qty" />
                                <field name="price_unit" />
                            </tree>
                        </field>
                    </page>
                </notebook>
            </sheet>
            <div class="oe_chatter">
                <field
                        name="message_follower_ids"
                        widget="mail_followers"
                        groups="base.group_user"
                    />
                <field name="message_ids" widget="mail_thread" />
            </div>
            </form>
        </field>
    </record>

    <record id="view_rma_supplier_form" model="ir.ui.view">
        <field name="name">rma.order.supplier.form</field>
        <field name="model">rma.order</field>
        <field name="inherit_id" ref="rma.view_rma_form" />
        <field name="mode">primary</field>
        <field name="arch" type="xml">
            <xpath expr="//button[@name='action_view_lines']" position="attributes">
                <attribute name="groups">rma.group_rma_supplier_user</attribute>
            </xpath>
            <field name="partner_id" position="attributes">
                <attribute name="string">Supplier</attribute>
                <attribute
                    name="context"
                >{'res_partner_search_mode': 'supplier'}</attribute>
            </field>
            <group name="inbound_route" position="after">
                <group name="outbound_route" string="Outbound">
                    <field
                        name="supplier_to_customer"
                        attrs="{'readonly':[('state', '!=', 'draft')]}"
                    />
                    <field
                        name="customer_address_id"
                        context="{'show_address': 1}"
                        options="{'always_reload': 1}"
                        attrs="{'required':[('supplier_to_customer', '=', True)],
                                   'invisible':[('supplier_to_customer', '=', False)],
                                   'readonly':[('state', '!=', 'draft')]}"
                    />
                </group>
            </group>
            <field name="rma_line_ids" position="attributes">
                <attribute name="context">{
                    'form_view_ref':'rma.view_rma_line_supplier_form',
                    'default_rma_id': active_id,
                    'default_partner_id': partner_id,
                    'supplier': 1,
                    'hide_title': True}
                </attribute>
            </field>
        </field>
    </record>

    <record id="view_rma_rma_filter" model="ir.ui.view">
        <field name="name">rma.order.select</field>
        <field name="model">rma.order</field>
        <field name="arch" type="xml">
            <search string="Search RMA">
                <field name="reference" />
                <field name="name" />
                <field name="partner_id" />
                <separator />
                <group expand="0" string="Group By">
                    <filter
                        name="partner"
                        string="Partner"
                        domain="[]"
                        context="{'group_by':'partner_id'}"
                    />
                    <filter
                        name="rma_date"
                        string="RMA Date"
                        domain="[]"
                        context="{'group_by':'date_rma'}"
                    />
                </group>
           </search>
        </field>
    </record>

    <record id="action_rma_customer" model="ir.actions.act_window">
        <field name="name">Customer RMA Group</field>
        <field name="res_model">rma.order</field>
        <field name="domain">[('type','=', 'customer')]</field>
        <field name="context">{'customer':1}</field>
        <field name="view_mode">tree,form</field>
        <field name="view_id" ref="view_rma_tree" />
    </record>

    <record id="action_rma_supplier" model="ir.actions.act_window">
        <field name="name">Supplier RMA Group</field>
        <field name="res_model">rma.order</field>
        <field name="domain">[('type','=', 'supplier')]</field>
        <field name="context">{'supplier':1}</field>
        <field name="view_mode">tree,form</field>
        <field name="view_id" ref="view_rma_supplier_tree" />
    </record>

    <record id="action_rma_supplier_tree" model="ir.actions.act_window.view">
        <field eval="1" name="sequence" />
        <field name="view_mode">tree</field>
        <field name="act_window_id" ref="action_rma_supplier" />
    </record>

    <record id="action_rma_supplier_form" model="ir.actions.act_window.view">
        <field eval="2" name="sequence" />
        <field name="view_mode">form</field>
        <field name="view_id" ref="view_rma_supplier_form" />
        <field name="act_window_id" ref="action_rma_supplier" />
    </record>

</odoo>