Drop-down box select-> option in view of how the parameters passed to the function

example:

<SELECT name = "the p_id" ID = ""> 
    {%}% for P in Permissions 
        <Option value = "{} {} p.p_id"> p.p_name {{}} </ Option> 
    {%} endfor% 
</ select> 

how to obtain this view dropdown box function value: 
in fact, may be obtained by the function name attribute in view 
dropdown box is generally in the form 
request.form.get ( 'p_id') 
but here for the fact that, value of the value of your choice, here is p.p_id 
value instead of option tags