Form validation callback return value

[eluser]Ashes-to-Ashes[/eluser]
In fact, I just verified that YES you can return a value instead of true or false. It is working on one of my callbacks but not the other.

Non working function

Code:

public function _tag_number_check($str)
{
  echo '<br>CHECKING TAG NUMBER WITH HIDDEN TAG NUMBER CHECK IN MAIN CONTROLLER';
  print_r ($_POST);
  if ($str == '') { $str = $_POST['tag']; }
  if ($str == '') {
   echo 'String is Blank';
   $this->form_validation->set_message('_tag_number_check', '%s is blank.');
   return false;
  } // if blank, but required, then handled in form area
  $this->load->model ('tags_model');
  // 9/5/2012 Jonathan seems this is already loaded if check being called
  //$this->load->library ('form_validation');
  if (!is_numeric($str))
  {
   echo "'$str' not numeric";
   $this->show->line (' Tag number not numeric, attempting look up as a string of words or words seperated by "&" symbol ');
   $query = $this->tags_model->select_query_from_search ($str);
   if ($query)
   {
    echo "Query returned results <br>";
    if ($query->num_rows > 1)
    {
     $this->form_validation->set_message('_tag_number_check', 'More than one tag number found for search');
     foreach ($query->result() as $row)
     {
      $this->show->line ($row->number. ' -- '.$row->label);
     }
     return FALSE;
    }
    elseif ($query->num_rows == 1)
    {
     echo "Only one match found. Tag number from this match.<br>";
     $row = $query->row();
     echo "Number is: $row->number<br>";
     return $row->number;
     // TASK: Figure out why this value is dropped somewhere between current and form using data
     // Currently have to rewrite the data in three places instead of just here
    }
    else
    {
     $this->form_validation->set_message('tag_number_check', 'No tags found using text search ');
     return FALSE;
    }
   } // query true
   else { $this->form_validation->set_message ('tag_number_check', 'No results for that search');
   }
  } // is numeric
  else
  {
   if ($this->tags_model->select_tag ($str))
   {
    return true;
   }
   else
   {
    $this->form_validation->set_message ('tag_number_check', 'No results for that tag number');
    return FALSE;
   }
  }
  return false;
  // TASK: look for valid tag number
} // function tag_number_check

Working callback

Code:

public function _account_number_check($str)
{
  if ($str == ``) {
   return true;
  } // if blank, but required, then handled in form area
  echo 'CHECKING ACCOUNT NUMBER HIDDEN FUNCTION MAIN CONTROLLER';
  $this->load->model ('accounts_model');
  $this->load->library ('form_validation');
  if (!is_numeric($str))
  {
   $this->show->line (' Account number not numeric, attempting look up as a string ');
   $query = $this->accounts_model->select_query_from_search ($str);
   if (!empty ($query))
   {
    if ($query->num_rows > 1)
    {
     $this->form_validation->set_message('_account_number_check', 'More than one account found for search');
     foreach ($query->result() as $row)
     {
      $this->show->line ($row->number. ' -- '.$row->name);
     }
     return FALSE;
    }
    elseif ($query->num_rows === 1)
    {
     $row = $query->row();
     return $row->number;
    }
    else
    {
     $this->form_validation->set_message('account_number_check', 'No accounts found using text search (use word & word & word .....)');
     $this->show->link ('Right click on this link, and open in new tab to create account
       then close that tab when done, and re-try this form',
       array ('account', 'action', 'new'));
     // TASK: pop-up account creation with pick root...
     // When window closes insert that number in the field, and use
     // JAVA to show name?
     return FALSE;
    }
   }
   return false;
  }
  return true; // TASK: check for bad account number
}

I am guessing that my particular error is is somewhere else, but I don't know where or how.