/**
* Renders the header cell content.
* The default implementation simply renders [[header]].
* This method may be overridden to customize the rendering of the header cell.
* @return string the rendering result
*/
protected function renderHeaderCellContent()
{
$name = $this->name;
if (substr_compare($name, '[]', -2, 2) === 0) {
$name = substr($name, 0, -2);
}
if (substr_compare($name, ']', -1, 1) === 0) {
$name = substr($name, 0, -1) . '_all]';
} else {
$name .= '_all';
}
$id = $this->grid->options['id'];
$options = json_encode(['name' => $this->name, 'multiple' => $this->multiple, 'checkAll' => $name], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
$this->grid->getView()->registerJs("jQuery('#{$id}').yiiGridView('setSelectionColumn', {$options});");
if ($this->header !== null || !$this->multiple) {
return parent::renderHeaderCellContent();
} else {
return Html::checkBox($name, false, ['class' => 'select-on-check-all']);
}
}