In yii2 we can create form without create FormModel. Here we go
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Wiki articles in category Tips tagged with "form"
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FORM with GET method causes repeated stacking of URL Parameters
// In Yii 1.x $form = $this->beginWidget('CActiveForm', [
'id' => 'order-search-form',
'method' => 'get',
]);
echo $form->textInput($searchModel, 'id');
echo CHtml::submitButton('Find', ['class' => 'btn btn-primary']);
$this->endWidget();
`