symfony admin generator upload reloaded

the good old admin_input_file_tag

When you hear that symfony "admin generator system has improved", it usually means
that they got rid of some useful feature (ie. upload/form helpers in generator.yml, validation in yaml etc :)

To "emulate" the deprecated admin_input_file_tag behaviour without fall back to the sfCompat10Plugin (whose features will be deprecated in the next releases of the framework) I did something like this in lib/form/doctrine/BaseFormDoctrine.class.php:

abstract class BaseFormDoctrine extends sfFormDoctrine
{
  protected function _getWebUploadDirPath($fieldName)
  {
    return '/'. basename(sfConfig::get('sf_upload_dir')) .'/files/'.
      $this->getModelName() .'/'. $fieldName .'/';
  }

  protected function _getUploadDirPath($fieldName)
  {
    return sfConfig::get('sf_upload_dir') .'/files/'. $this->getModelName() .'/'. $fieldName .'/';
  }

  /**
   * Get generator.yml configuration
   */
  protected function _getFieldsForm() {
    static $generatorYml = null;
    if ($generatorYml == null) {
      try {
        $configClassName = sfContext::getInstance()->getModuleName() . 'GeneratorConfiguration';
        $configuration = new $configClassName();
        $generatorYml = $configuration->getFieldsForm();
      }
      catch (sfException $e) {
        return array();
      }
    }
    return $generatorYml;
  }

  public function setup()
  {
    parent::setup();

    foreach ($this->_getFieldsForm() as $fieldName => $config) {
      if (isset($config['ntcType']) and $config['ntcType'] == 'image_upload') {
        $getterFunction = 'get'. sfInflector::camelize($fieldName);
        $this->validatorSchema[$fieldName] = new sfValidatorFile(array(
          'required'   => FALSE,
          'path'       => $this->_getUploadDirPath($fieldName),
          'mime_types' => 'web_images',
        ));
        $this->validatorSchema[$fieldName .'_delete'] = new sfValidatorBoolean();
        $this->widgetSchema[$fieldName] = new sfWidgetFormInputFileEditable(array(
          'label'        => sfInflector::humanize($fieldName),
          'is_image'     => TRUE,
          'with_delete'  => TRUE,
          'delete_label' => 'remove current file',
          'edit_mode'    => !$this->isNew(),
          'template'     => '%input% %delete% %delete_label% %file%',
          'file_src'     => $this->_getWebUploadDirPath($fieldName) .
            pathinfo($this->getObject()->$getterFunction(), PATHINFO_FILENAME) .'_thumb.jpg',
        ));
      }
    }
  }

  protected function processUploadedFile($field, $filename = null, $values = null)
  {
    $generatorYml = $this->_getFieldsForm();
    $fileName = parent::processUploadedFile($field, $filename, $values);
    /*
     * create a thumbnail to show in the form
     */
    if (isset($generatorYml[$field]['ntcType']) and 
        $generatorYml[$field]['ntcType'] == 'image_upload') 
    {
      $dirPath = $this->_getUploadDirPath($field);
      if (!empty($fileName)) {
        $thumbnail = new sfThumbnail(150, 150);
        $thumbnail->loadFile($dirPath . $fileName);
        $thumbName = pathinfo($fileName, PATHINFO_FILENAME) . '_thumb.jpg';
        $thumbnail->save($dirPath . $thumbName, 'image/jpeg');
      }
    }
    return $fileName;
  }
}

Then put in generator.yml of your model:

...

form:
  fields:
    my_image_field: {ntcType: image_upload}

You have to install sfThumbnailPlugin to make this work (or you just can drop the thumbnail generation code)

This will activate a file upload widget for every field configured with type "image_upload".

Thanks to searbe post for the inspiration.