Looks like yii 1 question. I think there are probably lots of other better answers in posts in the yii1 forum re this and examples with the extension. Apologies if I get it wrong or mis-interpret your question but will try anyway.
Its been a while and this is untested, but perhaps something like below inside view1.
// modal where path_to_view2 is path to your view2 file
echo '<div id="form-modal" class="modal-body">';
echo $this->getController()->renderPartial('path_to_view2', array('model'=>$this->model));
// button to show the modal
'label' => 'Open modal',
'url' => '#myModal',
'type' => 'primary',
'size' => 'small', // '', 'large', 'small' or 'mini'
'htmlOptions' => array(
'data-toggle' => 'modal',