mime_types for upload pdf files - symfony

I have 开发者_C百科a file upload field and in my configure() I've putted 'mime_types' => 'web_images' but this give me an error when I upload pdf files... what do I nedd to write instead of web_images to be able to upload pdf's? Thank you.

Remove 'mime_types' => 'web_images'

You have to set right mime category:

$this->setValidator('my_upload_widget', new sfValidatorFile(array(
            'required'        => false,
            'path'            => sfConfig::get('sf_upload_pdf_dir'),
            'mime_categories' => array('pdf' => array('application/pdf', 'application/x-pdf')),
            'mime_types'      => 'pdf'
        )));