How do change the default sort order of different trees for sale.order.line

Question

How do change the default sort order of different trees for sale.order.line

for example : order by name

<record id="_view_sale_order_line_tree" model="ir.ui.view">
    <field name="name">sale.order.line.tree1</field>
    <field name="model">sale.order.line</field>
    <field name="type">tree</field>
    <field name="priority" eval="1"/>
    <field name="arch" type="xml">
        <tree string="Sales Order Lines" >
            <field name="name"/>
            <field name="sequence"/>
        </tree>
    </field>
</record>

order by sequence

<record id="_view_sale_order_line_tree2" model="ir.ui.view">
    <field name="name">sale.order.line.tree2</field>
    <field name="model">sale.order.line</field>
    <field name="type">tree</field>
    <field name="priority" eval="2"/>
    <field name="arch" type="xml">
        <tree string="Sales Order Lines" >
            <field name="order_id"/>
            <field name="sequence"/>
        </tree>
    </field>
</record>

Answer 1

On version 8, you can use the attribute default_order in XML code.

In your code:

<record id="_view_sale_order_line_tree" model="ir.ui.view">
    <field name="name">sale.order.line.tree1</field>
    <field name="model">sale.order.line</field>
    <field name="type">tree</field>
    <field name="priority" eval="1"/>
    <field name="arch" type="xml">
        <tree string="Sales Order Lines" default_order="name">
            <field name="name"/>
            <field name="sequence"/>
        </tree>
    </field>
</record>

<record id="_view_sale_order_line_tree2" model="ir.ui.view">
    <field name="name">sale.order.line.tree2</field>
    <field name="model">sale.order.line</field>
    <field name="type">tree</field>
    <field name="priority" eval="2"/>
    <field name="arch" type="xml">
        <tree string="Sales Order Lines" default_order="sequence">
            <field name="order_id"/>
            <field name="sequence"/>
        </tree>
    </field>
</record>

Now I'm looking for a way to manage this on previous versions.

Answer 2

Specially for sorting in ascending or descending order we had attribute.

<record id="_view_sale_order_line_tree2" model="ir.ui.view">
<field name="name">sale.order.line.tree2</field>
<field name="model">sale.order.line</field>
<field name="type">tree</field>
<field name="priority" eval="2"/>
<field name="arch" type="xml">
    <tree string="Sales Order Lines"  default_order="sequence desc">
        <field name="order_id"/>
        <field name="sequence"/>
    </tree>
</field>

Here attribute default_order allow to set ordering of record.

default_order="sequence desc"

and

default_order="sequence asc"

This feature available from version 5.0 to till date of odoo 12.0 version.