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Form field read only except for adding new records

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  • Form field read only except for adding new records

    I have field in a table that I want to be set to read only on any form that the field is displayed on except when entering a new record. When entering a new record for the table you need to be able to enter data into the field. I know that I can program events on a specific form to set the form field to read only and then set it to not read only when adding a new record but was wondering if there was an easier way in field rules or somewhere else that I just missed in documentation and searching the forum.
    Jeff Ryder

  • #2
    Re: Form field read only except for adding new records

    It seems that if I set skip to true, in the field rules, that it does ship the field but only if I set it on the correct field. (No I have not drunk any Green Beer today yet)

    Now I just need to figure out what conditional code to put in the skip to set skip to true for existing records only.
    Jeff Ryder

    Comment


    • #3
      Re: Form field read only except for adding new records

      I'm not a fan of putting code in field rules that relies on a form being available. That said you can put this as the caneditfield event code for the field in question.

      Code:
      if is_object("yourformnamehere")
      	mde = yourformnamehere.mode_get()
      	if mde <> "ENTER"
      		cancel()
      	end if
      end if
      There can be only one.

      Comment


      • #4
        Re: Form field read only except for adding new records

        Stan,

        Thank you for pointing me in the right direction. I agree about tying field rule event code to a form but your suggestion got me thinking and this code seems to work in the CanEditField.

        Code:
        dim vPptr as p = table.current()
        if vPptr.mode_get() != 2 then
            cancel()
        end if
        Jeff Ryder

        Comment


        • #5
          Re: Form field read only except for adding new records

          I looked at that but doing so precludes any change to the field value. If you actually wanted to make a correction via another form or browse..........
          There can be only one.

          Comment


          • #6
            Re: Form field read only except for adding new records

            Stan,

            In this case I do not what the customer to ever be able to change the field with the exception of a xbasic function that I call to change it.

            Thanks.
            Jeff Ryder

            Comment


            • #7
              Re: Form field read only except for adding new records

              Jeff,

              Here is the expression to use in the skip rule.
              Code:
              TABLE.CURRENT().MODE_GET() <> 2
              Does pretty much the same as your event code.
              Tim Kiebert
              Eagle Creek Citrus
              A complex system that does not work is invariably found to have evolved from a simpler system that worked just fine.

              Comment


              • #8
                Re: Form field read only except for adding new records

                Thanks Tim.
                Jeff Ryder

                Comment

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