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calculated fields on web versus desktop

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  • calculated fields on web versus desktop

    I set up a dbf with a field with rules. Then I set up a web component that included that field. When I entered data into the desktop file, the calculation worked fine. When I entered data in the web component, nothing happened. So I put the field rule into the calculated field box in the web component. I found that, although I used the same field name, the web component field was separate. Well that was fine, it gave me the result I wanted. But now I want to use that field in a second component. How do I get it there, and how can I use it in a filter expression? It seems that the field and its records of data do not really exist.

  • #2
    Re: calculated fields on web versus desktop

    The calculated field you created on the grid, only exists on that grid. You have to recreate it on any other grid, dialog or A5W page. Describe how you want to use it as a filter expression; most likely you will want to simply recreate the same expression in the Filter box.
    Steve Wood
    Join the ALPHA DEVELOPERS NETWORK
    There is no Cloud. It's just someone else's computer.
    Web - Mobile - Hosting - Products - Frameworks - Developer Resources
    AlphaToGo | IADN (100% Alpha Anywhere Websites)

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    • #3
      Re: calculated fields on web versus desktop

      My concern is that I want to enter data into a given record from a particular grid. I want a field calculated from those data and saved in a real field on the server so that that result, for that record, can be used by another grid subsequently. How is that done?

      Thanks.

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      • #4
        Re: calculated fields on web versus desktop

        Read up on Grid Events.

        Create any calculated field, add it to your grid, text box or hidden, not a label. The event you use depends on whether you are adding or updating (or could be both).

        Example: BeforeValidateExistingRecords and BeforeValidateNewRecords to catch both new and existing.


        In the event you have to create normal xbasic, including a filter, to enter the desired value in your table.

        I often use record_add() or record_update() as simple methods.
        Steve Wood
        Join the ALPHA DEVELOPERS NETWORK
        There is no Cloud. It's just someone else's computer.
        Web - Mobile - Hosting - Products - Frameworks - Developer Resources
        AlphaToGo | IADN (100% Alpha Anywhere Websites)

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        • #5
          Re: calculated fields on web versus desktop

          Hi, Steve,

          I added the calculation to the events page, following the instructions in the on-line help site. When I went to live preview to check it out, the submit button disappeared. Now what?

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