[Zope] ZCatalog - perfoming an or operation on different columns

22 Jul 2002

      To perform a search in zcatalog in a different colums with an or operation,
I am joining the results lists with the following code:
    <dtml-let resa="Catalog(meta_type=['DTML Method','ZCatalog'])"
              resb="Catalog(title='Song')"
              res="resa[:_.len(resa)] + resb[:_.len(resb)]">
      <dtml-in res>
        A Match: <dtml-var "Catalog.getpath(data_record_id_)"><br>
      </dtml-in>
    </dtml-let>

But how can I avoid the duplicated matches of a results list from resa + resb ?
Regards
Marcos Iuato