protected function fillExcel(PHPExcel $excel, aPollPoll $poll, aPollBaseForm $fields_form, aPollAnswerForm $answer_form)
 {
     // loading helpers
     sfContext::getInstance()->getConfiguration()->loadHelpers('a');
     // file properties
     $excel->getProperties()->setCreator("Buddies Sàrl")->setLastModifiedBy($this->getUser()->getGuardUser()->getName())->setTitle(sprintf('Poll %s answers export', $this->poll->getTitle()))->setSubject(sprintf('Poll %s answers export', $this->poll->getTitle()))->setDescription('Export generated at ' . date('l d F Y H:i:s'));
     // Header
     $names = array(a_('Id'), a_('Posted from'), a_('Submission language'), a_('Submission date'));
     $excel->setActiveSheetIndex(0);
     $column = 'A';
     $row = 1;
     $font = 'Arial';
     $font_size = 10;
     // aPollAnswer fields
     foreach ($names as $name) {
         $cell = $column . $row;
         $excel->getActiveSheet()->setCellValue($cell, $name);
         $excel->getActiveSheet()->getColumnDimension($column)->setAutoSize(true);
         $excel->getActiveSheet()->getStyle($cell)->getFont()->setName($font);
         $excel->getActiveSheet()->getStyle($cell)->getFont()->setSize($font_size);
         $excel->getActiveSheet()->getStyle($cell)->getFont()->setBold(true);
         $column++;
     }
     // aPollAnswerField fields
     foreach ($fields_form->getFieldsToSave() as $field) {
         $cell = $column . $row;
         $excel->getActiveSheet()->setCellValue($cell, $fields_form->getWidget($field)->getLabel());
         $excel->getActiveSheet()->getColumnDimension($column)->setAutoSize(true);
         $excel->getActiveSheet()->getStyle($cell)->getFont()->setName($font);
         $excel->getActiveSheet()->getStyle($cell)->getFont()->setSize($font_size);
         $excel->getActiveSheet()->getStyle($cell)->getFont()->setBold(true);
         $column++;
     }
     // answers
     $answer_fields_to_report = array('id', 'remote_address', 'culture', 'created_at');
     $row = 1;
     foreach ($poll->getAnswers() as $answer) {
         $column = 'A';
         $row++;
         foreach ($answer_fields_to_report as $field) {
             $cell = $column . $row;
             $excel->getActiveSheet()->setCellValue($cell, aPollToolkit::renderFormFieldValue($answer_form, $answer_form[$field], $answer->get($field)));
             $excel->getActiveSheet()->getStyle($cell)->getFont()->setName($font);
             $excel->getActiveSheet()->getStyle($cell)->getFont()->setSize($font_size);
             $column++;
         }
         // building array of answer fields
         $answer_fields = $answer->getFields();
         $fields = array();
         foreach ($answer_fields as $field) {
             $fields[$field->getName()] = $field->getValue();
         }
         // writing values to excel
         foreach ($fields_form->getFieldsToSave() as $name) {
             $cell = $column . $row;
             if (isset($fields[$name])) {
                 $fields_form_field = $fields_form[$name];
                 $excel->getActiveSheet()->setCellValue($cell, aPollToolkit::renderFormFieldValue($fields_form, $fields_form_field, $fields[$name]));
                 $excel->getActiveSheet()->getStyle($cell)->getFont()->setName($font);
                 $excel->getActiveSheet()->getStyle($cell)->getFont()->setSize($font_size);
             }
             $column++;
         }
     }
     $excel->setActiveSheetIndex(0);
     return $excel;
 }
    ?>
                    <?php 
    $value = $form[$name]->getValue();
    ?>
                    <?php 
    $type = gettype($value);
    ?>

                    <tr class="<?php 
    echo 'a-form-row a-admin-' . strtolower($type) . ' a-admin-form-field-' . $name;
    ?>
">

                        <td class="a-form-label"><?php 
    echo $form->getWidget($name)->getLabel() ? $form->getWidget($name)->getLabel() : $name;
    ?>
</td>

                        <td class="a-form-field">
                            <?php 
    echo aPollToolkit::renderFormFieldValue($form, $field instanceof sfOutputEscaper ? $field->getRawValue() : $field, $value);
    ?>
                        </td>
                    </tr>
                <?php 
}
?>
            </tbody>
        </table>
    </div>
</div>