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Calculated field on browse problem

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    Calculated field on browse problem

    I have a set with 2 tables. Main table name �Investments�, child table �Units_2�.
    The main table contains all my investments � in the child table I list the weekly unit prices for the various Funds/Stocks. The linking keys are �Fund_code� for the parent table and �Fund � for the child table. The link type is � one-to one� and �last matching record�.
    On the main table I have a calculated field (�Current Val�). The formula is �UNITS*units_2->Unit_Val�.
    What is supposed to happen is that every time I enter a new current value in the �Units_2� table , the �Current Val� in the �Investments� table should reflect the new value .
    I am viewing the Investments on a form with embedded browse. If I add a calculated field on the form using the same formula (UNITS*units_2->Unit_Val) it works, but not on the browse.
    ?????

    Gunter

    #2
    Re: Calculated field on browse problem

    Hi Gunter,

    Your set you say, is linked as 1:1, in which case it could all be in one table.

    As the calculated field is based on vales from the parent and child table it will not work in the browse the way you are expecting.

    Try Investments->UNITS*units_2->Unit_Val.
    Regards
    Keith Hubert
    Alpha Guild Member
    London.
    KHDB Management Systems
    Skype = keith.hubert


    For your day-to-day Needs, you Need an Alpha Database!

    Comment


      #3
      Re: Calculated field on browse problem

      Hello Keith,

      changed the formula as per your suggestion - did not work. However , I found out that by changing the number of units in the investment table the calculated field updates to the right amount.
      That give you any idea ???

      Gunter

      Comment


        #4
        Re: Calculated field on browse problem

        Gunter,
        I created an example with what you described and was able to generate calculated fields without problem. I am not exactly certain if it corresponds to your setup exactly. I did have to add a OnSaveRecord field rule to add a corresponding child record for added parent investment records. I included a function that updates the current price based upon the investment symbol. This uses Yahoo Finance ( others are also available) and might not apply to your circumstance but exemplifies the capabilities to have investment values updated automatically.

        Hope it helps.
        Mike W
        __________________________
        "I rebel in at least small things to express to the world that I have not completely surrendered"

        Comment


          #5
          Re: Calculated field on browse problem

          Thank's Mike,

          this does not give me what I want. Maybe I should explain some more. The "Units_2" table will contain weekly price entries for each of the Funds/Stocks. In other words , there will be about 50 entries in one year for each investment.
          The "Current_Val" should show the value based on the last entry for each investment.

          Gunter

          Comment


            #6
            Re: Calculated field on browse problem

            Gunter,
            The "Units_2" table will contain weekly price entries for each of the Funds/Stocks... there will be about 50 entries .....for each investment.
            This is NOT a 1:1 link. If the single fund is the parent and the Unit_2 is the child, this is a 1:many link. If what you need is the current value based upon the last entry in the child record, then the attached should represent this scenario.
            Mike W
            __________________________
            "I rebel in at least small things to express to the world that I have not completely surrendered"

            Comment


              #7
              Re: Calculated field on browse problem

              There was an error in the last example, sorry. This should be OK
              Mike W
              __________________________
              "I rebel in at least small things to express to the world that I have not completely surrendered"

              Comment


                #8
                Re: Calculated field on browse problem

                Hi Mike,

                I always enjoy looking at your code as there is so much to learn from.

                I think there is a small error somewhere as the week counter, in Startup script, vcycle=vcycle+1 does not seem to be working.
                Regards
                Keith Hubert
                Alpha Guild Member
                London.
                KHDB Management Systems
                Skype = keith.hubert


                For your day-to-day Needs, you Need an Alpha Database!

                Comment


                  #9
                  Re: Calculated field on browse problem

                  Kieth,
                  The startup was just to get some data into the units2 tables as I don't like data entry type things. You are correct 'cause after I populated the table, I changed week field data type to "C"... so line 38 should be t.week = alltrim(str(vcycle)). Thanks kieth

                  This was just a quicky to attempt to show the calc fields. This has so many holes in the process that would need attending to. Like adding a new position... the weeks don't synch. I would not (and did not) set my own portfolio database with this structure. My own, BTW was greatly enhanced with your help with graphing scripts...thank you very much, Keith.
                  Mike W
                  __________________________
                  "I rebel in at least small things to express to the world that I have not completely surrendered"

                  Comment


                    #10
                    Re: Calculated field on browse problem

                    Gentlemen,

                    I want to thank you for your input.I took a different approach to this by attaching an update operation to the form events. So far it works fine.

                    Thank's Gunter

                    Comment

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