Hello Usman,

Instead of creating filter you are creating record rule. Record rule is for the security purpose. 

To filter data you can simply create one search view and add filter for the model in your xml file. 

<record id="sale_order_view_search_inherit_quotation" model="ir.ui.view">

            <field name="name">sale.order.search.inherit.quotation</field>

            <field name="model">sale.order</field>

            <field name="mode">primary</field>

            <field name="inherit_id" ref="sale.view_sales_order_filter"/>

            <field name="arch" type="xml">

                <xpath expr="//filter[@name='my_quotation']" position="after">

                    <filter name="last_7_days" string="Last 7 Days" domain="[('date_order','&gt;', (context_today() - datetime.timedelta(days=7)).strftime('%%Y-%%m-%%d') )]"/>

                </xpath>

            </field>

        </record>