CodeIgniter: set_message for max_length[x]

Question

How do you set an error message for max_length and min_length rules. For instance, if I set a rule max_length[6], I'd like the error message to display Max characters allowed: 5

Answer 1

CodeIgniter has one of the better documentations out of all the frameworks. Read the userguide on their site or the one in your CI directory.

http://codeigniter.com/user_guide/libraries/form_validation.html#settingerrors

Answer 2

@Daniel is correct. Per CodeIgniter's documentation, you can override the default error message for any validation rule (such as "min_length", "max_length", etc.) like this:

$this->form_validation->set_message('validation_rule', 'Your message here');

So, in your example you could do:

$this->form_validation->set_message('max_length', 'Max characters allowed: 5');

Simply include that where your validation rules exist.

Answer 3

gAMBOOKa,

create a 'new' rule that also checks for max_length

$this->form_validation->set_rules('username', 'Username', 'required|_max_length[12]');

and for the method..

function _max_length($val)
    {
     if (strlen($this->input->post('username')) > $val)
     {
                    $this->form_validation->set_message('_max_length', 'Max characters allowed: 5')
      return FALSE;
     }

     return TRUE;
    }

add this to your controller as a new rule and set the message like so ---^