Im trying to wait for a variable called compId to be set before we can access it. Right now we tried using a simple while loop to check peridiodically if the variable is assigned. We tried using: TWebTimer AsyncSleep The problematic function is: function TDataModule1.CompIdFromJWT(): string; N…

The DataSet.Open method is an aynch method but it does not have at this moment a variant returning a TJSPromise. The AfterOpen event is triggered (asynchronously) after opening the dataset, so from this event, you can calculate compid.

The AfterOpen is something we tried using, but still we get back to the same problem which we cannot wait for the AfterOpen to be executed and have results before reading the compId variable...

That's a fact, this needs to be implemented.

It's code all over the place when you have to use OnAfterOpen and you have a handful of datasets

@brunofierens Any update? This is a real roadblock which prevents implementation of security features...

We are researching this. I don't think it prevents anything, without promises, it just makes writing the code a bit more convoluted.

That is correct, you can do it all by using the AfterOpen, it is just that if you have a handful of datasets to open it does mean that the code can be complex, especially where not all the datasets need opening in every circumstance. ApplyUpdatesAndWait is another one that would be really useful.

Problem with Async concurrency of Dataset

WEB TMS WEB Core

Weetch_Russell (Russell Weetch) July 30, 2024, 8:59am 3

My proposal would make life so much simpler TXDataWebDataset add a LoadAndAwait method - BIZ / BIZ Feature Requests - TMS Support Center (tmssoftware.com)

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Problem with Async concurrency of Dataset

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