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List New Record Save is creating duplicate records

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  • List New Record Save is creating duplicate records

    HELP - SOS

    Version 12.4.6.2.6, Build 7295

    I have kind of a "more complex" form with 4 list controls and 4 detail window containers. Nothing extremely crazy and the form seems to load quickly and without any issues.

    List 1 is Parent list
    List 2 is a Child list of List 1
    List 3 is a Child list of List 2
    List 4 is a Child list of List 2

    Each list has a detail view with Field Map and as stated these detail views are accessed via embedded popup window containers.

    Synchronization Policy is Client to Server, so edits are automatically pushed to the server when a user does a save.

    Each time a record is added/edited/deleted from any list then all lists need to refresh data to update calculated fields based on sums of fields in their respective child lists.

    The issue I'm having is that in any of the lists, when I add a record and then click save two duplicate records are created. The first one immediately and then the second one after a slight delay. Has anyone experienced this situation with list controls?

    Thanks,
    Jeremy



  • #2
    It's even worse than I thought. As I continue to debug this problem, the last 2 new records I added, created 3 triplicate records of the one I was adding.

    Comment


    • #3
      Seems to have something to do with the views I created for each child list that I used to calculate the totals for display. I removed all joins to views and am no longer getting duplicate entries.

      Comment


      • #4
        more than likely - and this is just a guess is that you were adding a record to the multiple views as well as the records original table.
        NWCOPRO: Nuisance Wildlife Control Software My Application: http://www.nwcopro.com "Without forgetting, we would have no memory at all...now what was I saying?"

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        • #5
          Originally posted by CharlesParker View Post
          more than likely - and this is just a guess is that you were adding a record to the multiple views as well as the records original table.
          Anything's possible on certain days between Alpha and myself. However, I specifically set the views to read only in the Table Settings. I'd hope that would cover the issue you mentioned but again, it's hard to tell. In any event, thanks for the reply. The forums become far more useful when experts tackle the tougher questions rather than everyone just looking at the simple ones.

          Comment


          • #6
            There are times when the best way to control changes to your sql table(s) is to write the code yourself.
            You also gain the advantage of being able to use any UDFs you may have created.
            Gregg Schmidt

            Comment


            • #7
              It turns out the view had nothing to do with it. I removed all views from the equation and the issue still exists. I've submitted a bug report and expect they will need copies of the project and database in order to dig deeper into this.

              In the event someone stumbles on this issue down the road I'll post a follow up if I get anything figured out with this.

              Comment


              • #8
                I would add a record using your favorite sql editor or even the Alpha Anywhere SQL command window.
                If it doesn't do it there, then I would turn the feature to display sql commands on to see what it's doing.
                Gregg Schmidt

                Comment


                • #9
                  Jeremy,

                  This may have nothing to do with you problem, but I never use Alpha's built-in parent-child list sync feature. I simply keep the lists separate and refresh as needed when changing or adding rows in the parent. In the past when I had a parent list with a bunch of child lists, it was too slow to load. Hand-coding it brought the speed up to what you expect. But again, maybe this has nothing to do with your situation.
                  Peter
                  AlphaBase Solutions, LLC

                  Peter@AlphaBaseSolutions.com
                  https://www.alphabasesolutions.com


                  Comment


                  • #10
                    I agree with Peter write the record yourself - and I would add this, if your application is a web application and not an app, then I take the view if users are online they can use it - or they are offline and can't. Where else in this age have your seen a sync button on any application or webpage you use daily - I've never seen it - and I don't use it in aa unless, as I have found it better to just not offer offline capability, and then if specifically asked, answer yes and price it accordingly. Clients will say yes and them most will never use it, and they do not understand the work involved making it work reliability, the World has moved on from offline, these days it's everywhere.
                    As always tread your own path, but remember the well worn path is worn for a reason.
                    Pete
                    Insanity: doing the same thing over and over again and expecting different results.
                    Albert Einstein, (attributed)
                    US (German-born) physicist (1879 - 1955)

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                    • #11
                      I figured out the cause of this problem and it's rather bizarre. I am working in a multi developer scenario with Git. Here's what I was able to figure out and repeatedly trigger the error.

                      If I had the live application open in a browser and another developer deployed some changes that threw something out of sync internally that was causing my duplicate records. If I didn't have the live application open and went into it fresh after a deployment there is no issue. If I had the application open and did a full browser refresh no problem. Only when I had the application open, someone deployed some changes (not necessarily changes to the component I had open but changes to other components in the project), and I didn't refresh I would get duplicate errors.

                      The bizarre part is that I found a direct correlation between the number of times the other developer deployed updates and how many duplicate records I would get.
                      1 Deploy = 2 records (original + 1)
                      2 Deploys = 3 records (original + 2 duplicates)
                      3 Deploys = 4 records (original + 3 duplicates)

                      I didn't test beyond 3 deploys but proved without question this was the cause. I even turned the tide and had the other developer who was not having any issue open the page I was getting duplicates on. I then deployed the project and sure enough he started getting duplicates. I can't say for certain how widespread this is. Is it specific to my scenario with Parent/Child/Grandchild lists? Would it happen with a grid? Is it a session issue? We deploy updates pretty regularly and this is the first time I've seen this issue, but it's hard to tell with so many end users who has what open and at what time.

                      I have submitted the issue to Alpha, we'll see what they come back with.

                      Thanks,
                      Jeremy


                      Comment


                      • #12
                        You might want to activate the sync log feature and see if it helps.

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