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Delay Render till visible ?

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  • Delay Render till visible ?

    Using a layout UX and embedding multiple UX components with list controls on the layout UX. I am using a menu to move through the embedded controls. I prefer to render everything on load so once the app is loaded it is quicker to move through the various embedded UX components displaying various lists. This works fine in Chrome, but when I run it on a Ipad mini, or an Iphone some of the embedded components don't render. I just get a blank screen.

    If I check delay render until visible I get a short delay with a working message, but it solves the problem. So I'm left to load it that way for now. Is there a reason why this is happening, or is it a bug? It seems inconsistent. Sometimes a panel renders, and sometimes it doesn't if I leave delay render until visible unchecked. There are 10 embedded controls on the layout UX, but the data they display is just a small amount of sample data. My back end is a mysql DB.

    I am running this on safari, in a saved to home screen browser window, not using phonegap for this app yet. Using Chrome on my development machine. Doing this via a remote server, not using remote test, or localhost.


  • #2
    Re: Delay Render till visible ?

    Bob, did you ever resolve or fully understand this issue?
    I am grappling with mobile login issues when multiple embedded components exist. I opted to remove all embedded objects and load on demand using action java script (open a UX component) and not embed the objects. Once loaded, using the "delay render" option keeps the data loaded as long as the UX has it's own panel card. Some of my UX components require a connection so I would not use the "delay render" option.
    I have never been able to fully understand the white screen issue. The blank screen leaves the user with no option but to close and start over. It would be nice if the panel header with control bar loaded so the user can refresh if the full list control that could not be rendered. I assume there must be some server timeout setting that prevents the request from being fully completed since there are no errors or explanations for the behavior. The loading on demand has solved the problem for me since I have over 220 users and need to keep my payloads to a minimum.


    • #3
      Re: Delay Render till visible ?

      Hey Frank,
      Still using a layout UX, and embedding sub UX components. I have a combination of renders and refreshes depending upon how I use the sub components. I can't exactly recall how this was resolved, but I did have some issues using security groups, Generally I needed to allow all security groups on the component, and applied security to a listcontrol menu like the one used in the sample mobile app. I no longer seem to have the problem, but I do contend with long load times. If it comes to me I will follow up.


      • #4
        Re: Delay Render till visible ?

        I have found that the browsers can have an issue with the amount of data (in terms of size) if the data is related (parent/sibling/etc.) and you are using embedded UX's. So, one way to get around this is to "unrelate" the data (in terms of parent/sibling) and relate them in another way (we use GUID's). This way, say I have a Customer, and Orders. When I create a new customer it creates a GUID on the device and stores that in a separate field (it isn't the primary key). Then, when I create a new order for that customer, it uses the GUID from the customer and puts it in a Customer_GUID field in the Orders table. When I load the embedded UX (Orders) it doesn't automatically filter the records, I tell the user to hit "refresh". This way the ux loads and all embedded ux's load, and then if they want to see updated records they just refresh.

        I realize this may seem odd and unclear, but if you want further explanation I can give it. We had to find a way to elimiate the UX wanting to refresh related data especially as it related to matter what type of settings or sync policy we would cause issues in app performance. So....we just found a way to unrelate them...but still relate them....and it works well.