Hi friends, it's me again :)
Need over the GridView control in the toolbar display the search box like this:
but the author himself on the forum recommends this:
$form = ActiveForm::begin();
echo $form->field($model, 'search', [
'addon' => ['append' => ['content'=>'GO']]
Be sure to do this, use the ActiveForm? It is possible as that easier to deduce the usual method of Html class ?