Look this 

https://www.odoo.com/fr_FR/forum/aide-1/question/understanding-openerp-domain-filter-58405

If the answer is correct, tell me

I have  solved by adding domain field in action window by following code:-

<record id="action_product_pack_view" model="ir.actions.act_window">
        <field name="name">product pack</field>
        <field name="type">ir.actions.act_window</field>
        <field name="res_model">product.template</field>
        <field name="view_type">form</field>
        <field name="view_mode">kanban,tree,form</field>
        <field name="domain">[('is_pack','=',True)]</field>