class="partner-list-contents">
    t-foreach="partners"
       t-as="partner"
       t-key="partner.id">
        t-if="partner.parent_id==False">
        partner="partner"
                     selectedPartner="state.selectedPartner"
                     detailIsShown="state.detailIsShown"
                     isBalanceDisplayed="isBalanceDisplayed"
                     onClickEdit.bind="editPartner"
                     onClickPartner.bind="clickPartner"/>
                
    

the parent_id is many2one field.  I need to display in the pos customer list, the customer who dont have the parent id