Agiletoolkit: Or'ing ands

Question

I have a query that gives me a number of pairs of context_id and class_id. I want one of those to be met by another query. So I need to do where (co1 and cl1) or (co2 and cl2) or...

This one gives me a series of and's:

foreach($tscarr as $tsc)
{
  $grid->dq->where('context_id',$tsc['context_id'])->where('class_id',$tsc['class_id']);
}

I know from this page: http://agiletoolkit.org/doc/dsql/where that I should be able to do or. But I get an error when trying to use or in this way:

$grid->dq->where($grid->dq->or()->where($grid->dq->where('context_id',$tsc['context_id'])->where('class_id',$tsc['class_id'])));

Hope you have a good idea how to solve this...

Answer 1

You can use $dsql->orExpr() method.

There are multiple examples in Stackoverflow like this one https://stackoverflow.com/a/17958175/1466341 and also in ATK4 Google groups here https://groups.google.com/forum/#!forum/agile-toolkit-devel just search for orExpr.

I guess in your case something like this should work (untested):

$q = $grid->dq;
$or = $q->orExpr();

foreach($tscarr as $tsc)
{
    $or->where(
        $q->andExpr()
            ->where('context_id', $tsc['context_id'])
            ->where('class_id',   $tsc['class_id'])
    );
}
$q->where($or);