DTInstances.getList() nullpointerexception

[bolemeus]

I have several datatables on a single page and I want to be able to filter the results on a date (date between this and that). I've made a custom filter for this and I want to include this in the request I make to the server when fetching the results. I use serverside processing by the way.

In order to do this I need to reload the data for all datatable instances whenever the user updates the date filter. I'm trying the following, but I get a nullpointerexception.

    DTInstances.getList().each(function(dtInstance) {
        dtInstance.reload();
    });

It seems the NPE occurs in the getList() method. Is this a known bug or have I messed something up? The datatables are already initialised when the method gets called.

[l-lin]

There is a bug (check  #198) in the v0.4.0. It has been fixed for the upcoming version.
The DTInstances.getList() returns an object containing the list of datatables:

DTInstances.getList().then(function(dtInstances) {
    /*
     * This is the representation of dtInstances
     * dtInstances === {
     *      "foobar": {"id": "foobar", "DataTable": oTable, "dataTable": $oTable},
     *      "foobar2": {"id": "foobar2", "DataTable": oTable, "dataTable": $oTable}
     * }
     */

    // Suppose you want to use the DataTables "reload()" API to the "foobar" table 
    // See https://datatables.net/reference/api/ajax.reload()
    dtInstances.foobar.DataTable.reload();

    // If you want to use the angular-datatables "reloadData()" api
    // See http://l-lin.github.io/angular-datatables/#/dataReloadWithAjax
    dtInstances.foobar.reloadData();
});

[bolemeus]

Hey l-lin,

Thanks for the reply. I've added the extra lines as in #198, and changed my code to:

    DTInstances.getList().then(function(dtInstances) {
        logger.info('list', dtInstances);
    });

But now the code logger.info(...) never gets called. The getList() method gets called but that's it. I also tried it with the getLast() method, but that yields thesame result.

[l-lin]

See this pen.

[bolemeus]

Hey l-lin,

When I rewrite my code like the pen it also works, but I don't get why it doesn't in my example. I forked your pen to show my scenario. See this pen

Anyway, I'll try to fetch all datatables instances at pageload and see if I can work with that.

[l-lin]

Mmh I didn't consider this use case. It's all about timing issue.
I created an issue #234 about this.

For now, you will have to stick with calling like in my pen. 😞

[bolemeus]

Ok, thanks 😄

I've already made a beginning using the code you provided in your pen and it's looking good sofar. 👍
I don't know if you want to close this. I think it's best becuase my original issue was a duplicate.