extension.driver.php

<?php

class extension_uniqueuploadfield extends Extension
{
    public function update($previousVersion = false)
    {
        $symphony_version = Symphony::Configuration()->get('version', 'symphony');

        if (version_compare($symphony_version, '2.0.8RC3', '>=') && version_compare($previousVersion, '1.1', '<')) {
            $uniqueupload_entry_tables = Symphony::Database()->fetchCol("field_id", "SELECT `field_id` FROM `tbl_fields_uniqueupload`");
            if (is_array($uniqueupload_entry_tables) && !empty($uniqueupload_entry_tables)) {
                foreach ($uniqueupload_entry_tables as $field) {
                    Symphony::Database()->query(sprintf(
                        "ALTER TABLE `tbl_entries_data_%d` CHANGE `size` `size` INT(11) UNSIGNED NULL DEFAULT NULL",
                        $field
                    ));
                }
            }
        }

        if (version_compare($symphony_version, '2.3.3beta1', '>')) {
            // Remove directory from the unique upload fields, similar to Symphony's upload field
            $upload_tables = Symphony::Database()->fetchCol("field_id", "SELECT `field_id` FROM `tbl_fields_uniqueupload`");

            if (is_array($upload_tables) && !empty($upload_tables)) {
                foreach ($upload_tables as $field) {
                    Symphony::Database()->query(sprintf(
                        "UPDATE tbl_entries_data_%d SET file = substring_index(file, '/', -1)",
                        $field
                    ));
                }
            }
        }
    }

    public function uninstall()
    {
        Symphony::Database()->query("DROP TABLE `tbl_fields_uniqueupload`");
    }

    public function install()
    {
        return Symphony::Database()->query(
            "CREATE TABLE `tbl_fields_uniqueupload` (
             `id` int(11) unsigned NOT NULL auto_increment,
             `field_id` int(11) unsigned NOT NULL,
             `destination` varchar(255) NOT NULL,
             `validator` varchar(255),
              PRIMARY KEY (`id`),
              KEY `field_id` (`field_id`)
            ) ENGINE=MyISAM DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci;"
        );
    }
}