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Fieldrule function wanted to get name of open table for update field

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    Fieldrule function wanted to get name of open table for update field

    Hi all,

    Is there a way to create a function which can be called by a fieldrule for a conditional update of one or more fields in the current table?

    Can this function thus be used by other tables with identical fieldnames?

    I tried to accomplish it with the help examples of <TBL>.FILENAME_GET()

    Code:
    dim tbl as P
    tbl = table.current()
    tbl2 = table.open(tbl.filename_get())
    and
    Code:
    dim tbl2 as P
    tbl2 = table.open(table.current().filename_get())
    but struggle with the syntax.

    Who can help me with this function?

    The workaround is to add Xbasic to the fieldrule (Record Events: CanSaveRecord) for every table with its own tablename in it.

    Ton
    Most things are simple but unfortunately only after the first time

    #2
    Re: Fieldrule function wanted to get name of open table for update field

    What is a conditional update? An update operation? A script which updates records in a table?
    There can be only one.

    Comment


      #3
      Re: Fieldrule function wanted to get name of open table for update field

      Ton,

      This should work. Are you getting an error?

      If this is ever a set then there are other things you must do.

      Bill.

      Comment


        #4
        Re: Fieldrule function wanted to get name of open table for update field

        Stan

        The update of a field in the same table depending the value of a variable.



        Bill,

        I tried also in the interactive window with an open table.
        I added a pointer to table.current() but could not get the filename but don't know why, it is not in a set


        Ton
        Most things are simple but unfortunately only after the first time

        Comment


          #5
          Re: Fieldrule function wanted to get name of open table for update field

          Ton,

          The name of tbl.current() in the interactive is _NUL_ unless you reset the session table.

          ? table.current().name_get()
          = "_NUL_"
          tbl = table.open("customer")
          tbl.reset("customer")
          ? tbl.current().name_get()
          = "customer"
          Notice, you probably want .name_get() instead of .filename_get().
          Last edited by Stan Mathews; 09-21-2009, 02:07 PM.
          There can be only one.

          Comment


            #6
            Re: Fieldrule function wanted to get name of open table for update field

            Stan and Bill,

            This is indeed what I get

            Code:
            dim tbl2 as P
            tbl2 = table.open(table.current().filename_get())
            Error loading <NUL>: NULL table does not support 'db_alias_put' method.


            What I wanted to accomplish is a function that for example updates a field called inputdate in misc tables. As said it is called by a fieldrule.
            But... with a tbl.reset command I must hardcode the filename.

            When update a field you must point to customer->date because 'date' is a unkown variable thus results as an error.
            Most things are simple but unfortunately only after the first time

            Comment


              #7
              Re: Fieldrule function wanted to get name of open table for update field

              I tried this on a button on the AlphaSports Customer Information form.

              Code:
              tbl = table.current()
              name = tbl.name_get()
              tbl2 = table.open(name)
              name2 = tbl2.name_get()
              ui_msg_box("opened",name2)
              See screenshot for result. Note that Alpha "aliases" the second open instance with a postpending digit.

              You can, obviously, get the actual table name with

              left(name2,-1)
              Last edited by Stan Mathews; 09-21-2009, 02:23 PM.
              There can be only one.

              Comment


                #8
                Re: Fieldrule function wanted to get name of open table for update field

                Ton,

                t = table.open("contact")
                ?t.filename_get()
                = "d:\a5v5\helps intl\helps08\contact.DBF"
                vFilename = t.filename_get()

                t2 = table.open(vFilename)
                ?t2.filename_get()
                = "d:\a5v5\helps intl\helps08\contact.DBF"

                t2.close()

                Bill.

                Comment


                  #9
                  Re: Fieldrule function wanted to get name of open table for update field

                  I was not on the right way, thinking that using the tablename was a must, as you do in the fieldrules: customer->lastname = my_name.

                  Searching in the forum I found some examples about opening a current table and using the pointer like this: tbl.lastname = my_name.

                  So I just finished my function the way as advised by Cal already in 2005 where he also did not use 'change_begin()' and 'change_end()'.

                  Thanks Stan and Bill for jumping in so quick.

                  This is a great forum I've learned a few nice things today.

                  Ton
                  Most things are simple but unfortunately only after the first time

                  Comment

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