Question

我正在尝试创建一个wordpress插件，它将使用两个数据库，我需要它们才能拥有FOREIGN KEY，但只有在我删除FOREIGN KEY时才能创建它们，我可以让它们创建一个表。

global $wpdb;
  $table_name = $wpdb->prefix . 'aa_accessform';
  $table_name2 = $wpdb->prefix . 'aa_formcomments';

  $charset_collate = $wpdb->get_charset_collate();

    $wpdb->query(
        "CREATE TABLE IF NOT EXISTS $table_name (
            id              INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
            customer_id     INT UNSIGNED NOT NULL,
            appointment_id  INT UNSIGNED NOT NULL,
            notes TEXT,
            token VARCHAR(255) DEFAULT NULL
        ) ENGINE = INNODB
        DEFAULT CHARACTER SET = utf8
        COLLATE = utf8_general_ci"
    );
    require_once( ABSPATH . 'wp-admin/includes/upgrade.php' );
    dbDelta( $sql );
    $wpdb->query(
        "CREATE TABLE IF NOT EXISTS $table_name2 (
            id              INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY,
            customer_codes__id     INT UNSIGNED NOT NULL,
            appointment_codes_id  INT UNSIGNED NOT NULL,
            notes TEXT,
            token VARCHAR(255) DEFAULT NULL,
            PRIMARY KEY  (id),
            FOREIGN KEY  (customer_codes__id) REFERENCES ".$table_name." (id)
        ) ENGINE = INNODB
        DEFAULT CHARACTER SET = utf8
        COLLATE = utf8_general_ci"
    );
    dbDelta( $sql );

我很想知道出了什么问题。

Answer 1

我找到了答案，现在正在开展以下工作。

请注意以下行是真正的修复 FOREIGN KEY（customer_codes_id）REFERENCES $ table_name（id）//正确下面的错误行是： FOREIGN KEY（customer_codes__id）REFERENCES＆＃34;。$ table_name。＆＃34; （id）//错误

Wordpress使用FOREIGN KEY创建数据库

1 个答案: