is_unique for codeigniter form validation

Question

I\'m trying to figure out how I can use the is_unique rule from the Codeigniter form validation library in the following situation.

I\'m trying to submi

Answer 1

$something = $this->input->post('something');

$this->form->validation->set_rules('something','Something','xss_clean|is_unique['tbl'.users]');

if($this->form_validation->run()== FALSE){

}

Answer 2

There's a better way to go around it, I think, still using CodeIgniters' validation library... Use edit_unique where you pass an extra parameter which is the id of the row you're editing.. See below.. I use it and works pretty fine for me.. hope it helps

$this->form_validation->set_rules('user_name', 'User Name', 'required|trim|xss_clean|edit_unique[users.user_name.'.$id.']');

Answer 3

Simple Way

Just Change isset to is_object in system/libraries/form_validation.php

public function is_unique($str, $field)
{
    sscanf($field, '%[^.].%[^.]', $table, $field);
    return is_object($this->CI->db) //default isset
        ? ($this->CI->db->limit(1)->get_where($table, array($field => $str))->num_rows() === 0)
        : FALSE;
}