[Pas2js] TDataset load local JSON in a async way. How?

Michael Van Canneyt michael at freepascal.org
Sat Aug 29 10:04:42 CEST 2020

On Fri, 28 Aug 2020, warleyalex via Pas2js wrote:

> Following this piece of code:
>  fConnection.Active := true; // fDataSet should be Active BUT is still
>  console.log(  fDataset.Active ); // we've got a FALSE status because we
> are loading JSON in async way
> The ugly workaround, I have to use the setTimeout with 50ms 
>  window.setTimeout(procedure()
>  begin
>    console.log(  fDataset.Active ); // we've got TRUE status
>  end, 50);

I don't see how setting a connection to active can activate datasets, 
but we'll leave that aside for the sake of argument:

There is no need for timers. Every dataset has an AfterOpen event.

Why not use that to populate the fishrecord ?

That's how I do it in all my code. Call Load, and in the AfterOpen event
handler I do whatever is needed.

That's what these event handlers are for, after all.


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