I made a button to change status in form view.

in xml

<record id="eric_product_attribute_form_view" model="ir.ui.view">
    <field name="model">product.attribute</field>
    <field name="view_type">form</field>
    <field name="mode">primary</field>
    <field name="arch" type="xml">
        <header>
            <button name="change_attribute_status" states="confirmed" string="Confirm" type="object" class="btn-primary" attrs="{'invisible': [('state', '!=', 'saved')]}"/>
        </header>
    </field>
</record>

1. 
   
   
2. and Action
3. 
   

class ProductAttribute(models.Model):
    _name = "product.attribute"
    _inherit = "product.attribute"

    state = fields.Char("Status")

    @api.multi
    def change_attribute_status(self):
        _logger.info("====================================456========================================")

Please help