simple search form

Hello everyone thank you in advance for any help

In view/index.php main page file I have to add simple form:

<?php echo CHtml::beginForm();

echo CHtml::textField('text_to_find_ID', ''); 
echo CHtml::submitButton('FIND'); 

echo CHtml::endForm(); ?>

TextField will be full in always the same way - for example: "ID15:other useless incoming data"

What I have to do after press FIND by user is:
1. read text field...
2. use preg_split to get ID (and trim ID letters of course)

$look_for_id = preg_split('/:/','text_to_find_ID');
$found_id = $look_for_id[0];

3. jump user to MyModelName/view/found_id

Can anyone help me to build it properly? Please