Grid Enhancements
Sorting
You can give user ability to sort grid data. This is done by calling makeSortable() function after field definition.
$g=$p->add('Grid');
$g->addColumn('name')->makeSortable();
$g->addColumn('surname')->makeSortable();
$g->setSource('user');
$g->dq->where('name is not null')->limit(5);
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