I have implemented combobox in cakephp using following statement -

echo $form->select('brand_id',array($brands),null,array(),'Choose Brand');

for brand and input form for category -

echo $form->input('category_id',array('type'=>'select',$categories,'empty'=>'Choose Category'));

but none of above option allows me to add my text input to brand or category, like say I want to add an input which is not there in the combobox, how should i go about it.

Like a link in the combobox or textbox in combobox?

-skr