Yii CHtml::textField own validation?

Question

Yii

textField fields are not in the model. they are from another table. that is, I cannot use validation from the model. but with the request I get what is indicated by the field in the type (float, text, int). How can I check what the user enters.
something like
(real)$value = str_replace(',','.',$value);

Answer 1

Not very elegant, of course.
_form.php

echo '<div class="column">';
            echo CHtml::label($rows[$i]['name'], $rows[$i]['name']);
            echo CHtml::textField("elem[$id][val][]", $val, array('id' => $rows[$i]['name']));
            echo '</div>';
            echo '<div class="column" style="display:none">';
            echo CHtml::textField("elem[$id][type][]", $type, array('id' => $rows[$i]['name']));
            echo '</div>';

we get the following html code

<div class="column">
<label for="Вагонов">Вагонов</label>
<input id="Вагонов" type="text" name="elem[5][val][]" value="">
</div>
<div class="column" style="display:none">
<input id="Вагонов" type="text" name="elem[5][type][]" value="int">
</div>

controller

if (isset($_POST['elem']))
                    {
                        $command = Yii::app()->db->createCommand();
                        $max = Yii::app()->db->createCommand()
                                ->select('max(id) as max')
                                ->from('a_analiz_create')
                                ->queryScalar();

                        $Ids = $_POST['elem'];
                         $cnt = max(array_keys($Ids));
                        $min = min(array_keys($Ids));
                        for($i = $min; $i <= $cnt; $i++)
                        {
                            $type = $Ids[$i]['type'][0];
                            $val = $Ids[$i]['val'][0];
                            if ($type == 'float')
                            {
                                (real)$val = str_replace(',','.',$val);                                 
                            }
                            else if ($type == 'int')
                            {
                                $val = (int)$val;                                 
                            }   
                            if (isset($val) && !empty($val))
                                $command->insert('a_analiz_data', array(
                                    'analiz_id' => $max, 
                                    'value' => $val,
                                    'elem_id' => $i,
                                    'user_id' => Yii::app()->user->id,
                                ));
                        }
                    };

Answer 2

If you need to validate a field from another model in the form, you can create a fake field, and validate it.
When creating a form, load data from another model into it, when saving the form, after validation, upload data from the fake field to the desired model.