How to access 'user' object from domain in action record

Thanks for reply.
This is an example.
Look to USER_PARTNER_IDS and USER_PAYMENT_MODE_IDS.

Part of example.xml:
    <record id="action_income_payment_line_tree" model="ir.actions.act_window">
      <field name="name">Входящие платежи</field>
      <field name="res_model">payment.line</field>
      <field name="view_type">form</field>
      <field name="view_mode">tree,form</field>
      <field name="limit">300</field>
      <field name="context">{"search_default_today":1}</field>
      <field name="domain">[('partner_id','in','USER_PARTNER_IDS')]</field>
      <field name="search_view_id" ref="view_payment_line_search"/>
    </record>

    <record id="action_outgoing_payment_line_tree" model="ir.actions.act_window">
      <field name="name">Исходящие платежи</field>
      <field name="res_model">payment.line</field>
      <field name="view_type">form</field>
      <field name="view_mode">tree,form</field>
      <field name="limit">300</field>
      <field name="context">{"search_default_today":1}</field>
      <field name="domain">[('payment_mode','in','USER_PAYMENT_MODE_IDS')]</field>
      <field name="search_view_id" ref="view_payment_line_search"/>
    </record>

Part of example.py:
    def search(self, cr, uid, args, offset=0, limit=None, order=None, context=None, count=False, xtra=None):
        user = self.pool.get('res.users').browse(cr, uid, uid, context=context)
        new_args = []
        for arg in args:
            if type(arg) is not tuple:
                new_args += arg
                continue
            if arg[2] == 'USER_PARTNER_IDS':
                new_args += [(arg[0], arg[1], [p.id for p in user.partner_ids])]
            elif arg[2] == 'USER_PAYMENT_MODE_IDS':
                new_args += [(arg[0], arg[1], [m.id for m in user.payment_mode_ids])]
            else:
                new_args += [arg]
        return super(payment_line, self).search(cr, uid, new_args, offset, limit, order, context, count)

Thanks Serpent Consulting Services, that solved my question.

It's very simple

<field name="domain">[('partner_id','=', uid)]</field>

Works like a Charm!