PDF Upload

<?php
    $xcrud = Xcrud::get_instance();
    $xcrud->table('pdf_data');

    // simple file upload
    //$xcrud->change_type('pdf_file', 'file', '', array('not_rename'=>true));
    $xcrud->change_type('pdf_file','file');//,'',array('blob'=>true));

    //$xcrud->after_upload("file_callback");
    $xcrud->before_insert("before_insert");
    $xcrud->before_update("before_update");
    $xcrud->column_callback("pdf_blob","show_pdf");
    $xcrud->field_callback("pdf_blob","show_pdf");

    // simple image upload
    //$xcrud->change_type('pdf_file', 'image');

    echo $xcrud->render();
?>