版本号无法找到迁移：1

Question

我尝试在youtube here上关注在codeigniter中创建迁移的codeigniter tutorail。但是，我收到了错误

  

版本号无法找到迁移：1

我已设置 $ config [＆＃39; migration_version＆＃39;] = 1 ;在Application / Config / migration.php和我的用于创建用户表的迁移文件

中

应用/迁移/ 001_Create_User.php

   <?php
defined('BASEPATH') OR exit('No direct script access allowed');

class Migration_Create_Users extends CI_Migration {

/*
up function is for creating and alert table
*/
        public function up()
        {
                $this->dbforge->add_field(array(
                        'id' => array(
                                'type' => 'INT',
                                'constraint' => 11,
                                'unsigned' => TRUE,
                                'auto_increment' => TRUE
                        ),
                        'email' => array(
                                'type' => 'VARCHAR',
                                'constraint' => '128',
                        ),
                        'password' => array(
                                'type' => 'VARCHAR',
                                'constraint' => '100',
                        ),
                ));
                $this->dbforge->add_key('id',TRUE);
                $this->dbforge->create_table('users');
        }

/*
down function for rollback table
*/
        public function down()
        {
                $this->dbforge->drop_table('users');
        }
}
?>

当我检查我的数据库时，我看到迁移表版本始终为0。

请帮助我，谢谢

Answer 1

在config / migration.php

中

 /*
    |--------------------------------------------------------------------------
    | Migration Type
    |--------------------------------------------------------------------------
    |
    | Migration file names may be based on a sequential identifier or on
    | a timestamp. Options are:
    |
    |   'sequential' = Default migration naming (001_add_blog.php)
    |   'timestamp'  = Timestamp migration naming (20121031104401_add_blog.php)
    |                  Use timestamp format YYYYMMDDHHIISS.
    |
    | If this configuration value is missing the Migration library defaults
    | to 'sequential' for backward compatibility.
    |
    */
    $config['migration_type'] = 'sequential';