Tengo todas mis funciones de devolución de llamada en My_Controller para que no se repitan en todo el sitio web. Esto funciona bien, pero por alguna razón, una de mis funciones no funciona cuando publico información usando AJAX pero está trabajando en otras páginas. El mensaje que recibo cuando uso la devolución de llamada es:

Unable to access an error message corresponding to your field name.

Pero luego he creado un mensaje para él usando set_message () y funciona bien en la otra página sin AJAX.

Si estaba interesado en el registro, aquí está la salida relevante al ingresar una fecha no válida:

ERROR - 2013-05-24 16:03:08 --> -----Valid date format called, 223013-05-15
ERROR - 2013-05-24 16:03:08 --> -----Should be okay = , 223013-05-15
ERROR - 2013-05-24 16:03:08 --> -----Valid date format = false, 223013-05-15

Y con una fecha válida:

ERROR - 2013-05-24 16:06:00 --> -----Valid date format called, 2013-05-24
ERROR - 2013-05-24 16:06:00 --> -----Should be okay = , 2013-05-24
ERROR - 2013-05-24 16:06:00 --> -----Valid date format = true, 05,24,2013

Aquí está la devolución de llamada:

class MY_Controller extends CI_Controller
{
    var $options;
    public function __construct()
    {
        parent::__construct();
        date_default_timezone_set('Europe/London');

        $this->options->calendar = FALSE;
    }

  //Check date format aggainst mysql format, valid dates only, no 30-2-2010.
  function _Valid_Date_Format($date)
  {
    log_message('error', '-----Valid date format called, '.$date);

    if( empty($date) )
    {
        $this->form_validation->set_message('_Valid_Date_Format', 'This date is required.');
        return FALSE;  
    }
    else
    {
        log_message('error', '-----Should be okay = , '.$date);
    }

    $parsed = explode('-',$date);

    if( checkdate($parsed[1],$parsed[2],$parsed[0]) )
    {
      log_message('error', '-----Valid date format = true, '.$parsed[1].','.$parsed[2].','.$parsed[0]);
      return TRUE;
    }

    log_message('error', '-----Valid date format = false, '.$date );

    $this->form_validation->set_message('_Valid_Date_Format', 'The Date entered is invalid.');
    return FALSE;
  }
}

Aquí está el código AJAX:

// Presentar la función de tiempo $ ("# submit_time"). Click (function () {var cct = $ .cookie ('csrf_simple_cookie'); // Superar la limitación de ajax con la función csrf, ver más abajo:

        $.ajax({
        url: folder,
        type:"POST",
        context: document.body,
        data: {t_id:$('#t_id').val(),
        time_for:$('#time_for').val(),
        hrs_spent:$('#hrs_spent').val(),
        mins_spent:$('#mins_spent').val(),
        timer_description:$('#timer_description').val(),
        date_worked:$('#date_worked').val(),
        csrf_simple_collab:cct},
        dataType: "json",
        error: function(XMLHttpRequest,error)
        {
            if(error=='parsererror')//Not logged in.
            {
                window.location.replace(loginFolder)//redirect to login page
            }
        },
        success: function(data)
        {                   
              if(data.success)
              {
                    var message=$('#message-box').html('<span>Time data added successfully.</span>').hide();
                    message.fadeIn("slow"); 
                    javascript:location.reload(true);
              }
              else
              {
                    if(data.validation)
                    {
                        //var message=$('#message-box').html("<span>Database error</span>");
                        var message=$('#message-box').html(data.error);
                    }
                    else
                    {
                        var message=$('#message-box').html(data.error);
                        $('#time-for-error').html(data.time_for);
                        $('#date-worked-error').html(data.date_worked);
                        $('#mins-spent-error').html(data.mins_spent);
                        $('#hrs-spent-error').html(data.hrs_spent);
                        $('#timer-description-error').html(data.timer_description);
                    }
              }          
        }
        });

return false;

});

Aquí está la vista:

    <?
        //If we are an admin we can alter the user the information is added for.            
        if($this->session->userdata('userType')=='admin'): ?>
        <div class="form_row">
            <div class="form_field">
                <label for="time_for">User:</label> 
            </div>      
            <div class="form_field name_element" id="time-for-container">
                <select name="time_for" id="time_for">
                    <?
                        foreach($users as $key => $u):
                            if($u->userId==$this->session->userdata('userId')):                             
                            ?>
                                <option selected="selected" value="<?=$u->userId?>"><?=$u->userName?></option> <?='\n'?>
                            <?
                            else:
                            ?>
                                <option value="<?=$u->userId?>"><?=$u->userName?></option> <?='\n'?>
                            <?
                            endif;
                        endforeach;
                    ?>
                </select>
                <p id="time-for-error"></p>
            </div>
        </div>      
    <? else: ?>
        <input type="hidden" id="time_for" name="time_for" value="<?=$this->session->userdata('userId')?>">
    <? endif; ?>

<div class="form_row">
  <div class="form_field">
    <label for="hrs_spent">Hours and minutes spent:</label> 
  </div>

  <div class="form_field name_element" id="mins-spent-container">
    <input type="text" maxlength="6" name="hrs_spent" id="hrs_spent" value="" />
            <span id="min-separator">:</span>
            <input type="text" maxlength="6" name="mins_spent" id="mins_spent" value="" />
    <p id="mins-spent-error"></p>
            <p id="hrs-spent-error"></p>
  </div>
</div>

<div class="form_row">
  <div class="form_field">
    <label for="date_worked">Date Worked:</label> 
  </div>

  <div class="form_field name_element" id="date-picker-container">
    <input type="text" name="date_worked" id="date_worked" />
    <p id="date-worked-error"></p>
  </div>
</div>    

<div class="form_row">
  <div class="form_field">
    <label for="timer_description">Description:</label> 
  </div>

  <div class="form_field name_element" id="description-container">
    <textarea name="timer_description" id="timer_description" value=""></textarea>
    <p id="timer-description-error"></p>
  </div>
</div>

<input type="hidden" id="c_id" name="c_id" value="<?=$task->c_id ?>" />
<input type="hidden" id="p_id" name="p_id" value="<?=$task->p_id ?>" />
<input type="hidden" id="t_id" name="t_id" value="<?=$task->t_id ?>" />

<input type="hidden" name="login-folder" id="login-folder" value="<?=base_url()?>login" />
<input type="hidden" name="submit-folder" id="submit-folder" value="<?=base_url()?>times/submit_time" />

<div class="form_row">      
    <div id="message-box"></div>
    <input type="button" name="submit" id="submit_time" class="button-styles button-three" value="Add time" />      
</div>

</div>    

Método del controlador:

class Times extiende MY_Controller {var $ options;

    //Ajax function used to submit the time information from task page form.
    function submit_time()
    {
        $options=array();

        $this->form_validation->set_rules("time_for","Time for","trim|required|is_natural_no_zero");
        $this->form_validation->set_rules("hrs_spent","Hrs spent","trim|required|is_natural|min_length[1]|max_length[5]");      
        $this->form_validation->set_rules("mins_spent","Mins spent","trim|required|is_natural|min_length[1]|max_length[2]|less_than[60]");
        $this->form_validation->set_rules("timer_description","Description","trim|min_length[5]|max_length[1000]");
        $this->form_validation->set_rules("date_worked","Date Worked","trim|required|callback__valid_date_format");

//$json->data=array('success'=>0,'validation'=>1,'error'=> validation_errors() );
//$this->load->view('data/json_encode',$json);

        if($this->form_validation->run())
        {
          $options['hrs_spent'] = $this->input->post('hrs_spent');
          $options['mins_spent'] = $this->input->post('mins_spent');            
          $options['timer_description'] = $this->input->post('timer_description');
          $options['date_worked'] = $this->input->post('date_worked');
          $options['t_id'] = $this->input->post('t_id');
          $options['u_id'] = $this->input->post('time_for');//Notice time for field here.

          $add = $this->time_model->add_time($options);

          if(!$add):
            $json->data=array('success'=>0,'validation'=>1,'error'=>'Database error');
          else:
                $json->data=array('success'=>1,'validation'=>1);    
                $this->log_model->add_log_entry( array('log_id'=>1,'item'=>'Time record "'.reduce_string($options['timer_description'],50).'" was added for user '.$options['u_id'].'.') );
            endif;

          $this->load->view('data/json_encode',$json);
        }
        else
        {
          $json->data = array(
            'time_for' => form_error('time_for'),
            'hrs_spent' => form_error('hrs_spent'),
            'mins_spent' => form_error('mins_spent'),           
            'timer_description' => form_error('timer_description'),
            'date_worked' => form_error('date_worked'),
            'success'=>0,
            'validation'=>0,
            'error'=>'There are errors in the form.'
          );

          $this->load->view('data/json_encode',$json);
        }
    }

}