Question

I have this validation rule in CodeIgniter:

'bookForm' => array(
     array(
         'field'   => 'title', 
         'label'   => 'Title', 
         'rules'   => 'trim|required|min_length[10]'
     )
)

I was wondering if I’m doing this right or wrong, because when I enter a space followed by a string which is 10 in length, it’s supposed to be trim and evaluate if it’s a string 10 in length – which it does.

However, when I try to get the data after it passes validation, the string still has the space in front. Is this the right behavior of CI? I mean i just trimmed data in validation, do I have to trim those once more for storage? If I actually needed the string to be MD5’ed, I would do MD5 on it again after? (Talk about redundancy)

Answer 1

Looking in the docs we can see that indeed the content must be trimmed after the validation.

Note: You will generally want to use the prepping functions after the validation rules so if there is an error, the original data will be shown in the form.

EDIT

A quick test in CI 2.2.0 with the md5 function shows that the POST variable is changed after the validation, avoiding redundancy.