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YII Framework框架使用YIIC快速创建YII应用之migrate用法实例详解

程序员文章站 2024-04-01 20:57:52
本文实例讲述了yii framework框架使用yiic快速创建yii应用之migrate用法。分享给大家供大家参考,具体如下: yii migrate 查看帮助...

本文实例讲述了yii framework框架使用yiic快速创建yii应用之migrate用法。分享给大家供大家参考,具体如下:

yii migrate

查看帮助

/*
/www/yii_dev/yii/framework# php yiic migrate help
error: unknown action: help
usage
 yiic migrate [action] [parameter]
description
 this command provides support for database migrations. the optional
 'action' parameter specifies which specific migration task to perform.
 it can take these values: up, down, to, create, history, new, mark.
 if the 'action' parameter is not given, it defaults to 'up'.
 each action takes different parameters. their usage can be found in
 the following examples.

examples

* yiic migrate
applies all new migrations. this is equivalent to 'yiic migrate to'.
* yiic migrate create create_user_table
creates a new migration named 'create_user_table'.
* yiic migrate up 3
applies the next 3 new migrations.
* yiic migrate down
reverts the last applied migration.
* yiic migrate down 3
reverts the last 3 applied migrations.
* yiic migrate to 101129_185401
migrates up or down to version 101129_185401.
* yiic migrate mark 101129_185401
modifies the migration history up or down to version 101129_185401.
no actual migration will be performed.
* yiic migrate history
shows all previously applied migration information.
* yiic migrate history 10
shows the last 10 applied migrations.
* yiic migrate new
shows all new migrations.
* yiic migrate new 10
shows the next 10 migrations that have not been applied.
*/

在我们开发程序的过程中,数据库的结构也是不断调整的。我们的开发中要保证代码和数据库库的同步。因为我们的应用离不开数据库。例如: 在开发过程中,我们经常需要增加一个新的表,或者我们后期投入运营的产品,可能需要为某一列添加索引。我们必须保持数据结构和代码的一致性。如果代码和数据库不同步,可能整个系统将无法正常运行。出于这个原因。yii提供了一个数据库迁移工具,可以保持代码和数据库是同步。方便数据库的回滚和更新。

功能正如描述。主要提供了数据库迁移功能。

命令格式

yiic migrate [action] [parameter]

action参数用来制定执行哪一个迁移任务。可以一使用

up, down, to, create, history, new, mark.这些命令

如果没有action参数,默认为up

parameter根据action的不同而有所变化。

上述例子中给出了说明。

官方也给出了详细的例子。

这里不再详细累述。用到的时候参考使用就可以了。

补充:yii2.0使用migrate创建后台登陆

重新创建一张数据表来完成后台登陆验证

为了大家看得明白,直接贴代码

一、使用migration创建表admin

console\migrations\m130524_201442_init.php

use yii\db\schema;
use yii\db\migration;
class m130524_201442_init extends migration
{
  const tbl_name = '{{%admin}}';
  public function safeup()
  {
    $tableoptions = null;
    if ($this->db->drivername === 'mysql') {
      // http://*.com/questions/766809/whats-the-difference-between-utf8-general-ci-and-utf8-unicode-ci
      $tableoptions = 'character set utf8 collate utf8_unicode_ci engine=innodb';
    }
    $this->createtable(self::tbl_name, [
      'id' => schema::type_pk,
      'username' => schema::type_string . ' not null',
      'auth_key' => schema::type_string . '(32) not null',
      'password_hash' => schema::type_string . ' not null', //密码
      'password_reset_token' => schema::type_string,
      'email' => schema::type_string . ' not null',
      'role' => schema::type_smallint . ' not null default 10',
      'status' => schema::type_smallint . ' not null default 10',
      'created_at' => schema::type_integer . ' not null',
      'updated_at' => schema::type_integer . ' not null',
    ], $tableoptions);
    $this->createindex('username', self::tbl_name, ['username'],true);
    $this->createindex('email', self::tbl_name, ['email'],true);
  }
  public function safedown()
  {
    $this->droptable(self::tbl_name);
  }
}

使用命令行来创建admin数据库

1、win7下使用命令:

在项目根目下,右键选择user composer here(前提是安装了全局的composer),
yii migrate

即创建数据表 admin成功

YII Framework框架使用YIIC快速创建YII应用之migrate用法实例详解

2、linux下命令一样(此处略)

二、使用gii创建模型

此处略,很简单的步聚。

注:把admin模型创在 backend/models下面 (放哪里看个人喜好)
代码如下

namespace backend\models;
use yii;
use yii\base\notsupportedexception;
use yii\behaviors\timestampbehavior;
use yii\db\activerecord;
use yii\web\identityinterface;
/**
 * this is the model class for table "{{%admin}}".
 *
 * @property integer $id
 * @property string $username
 * @property string $auth_key
 * @property string $password_hash
 * @property string $password_reset_token
 * @property string $email
 * @property integer $role
 * @property integer $status
 * @property integer $created_at
 * @property integer $updated_at
 */
class agadmin extends activerecord implements identityinterface
{
  const status_deleted = 0;
  const status_active = 10;
  const role_user = 10;
  const auth_key = '123456';
  /**
   * @inheritdoc
   */
  public static function tablename()
  {
    return '{{%admin}}';
  }
  /**
   * @inheritdoc
   */
  public function behaviors()
  {
    return [
      timestampbehavior::classname(),
    ];
  }
  /**
   * @inheritdoc
   */
  public function rules()
  {
    return [
      [['username', 'email',], 'required'],
      [['username', 'email'], 'string', 'max' => 255],
      [['username'], 'unique'],
      [['username'], 'match', 'pattern'=>'/^[a-z]\w*$/i'],
      [['email'], 'unique'],
      [['email'], 'email'],
      ['status', 'default', 'value' => self::status_active],
      ['status', 'in', 'range' => [self::status_active, self::status_deleted]],
      ['role', 'default', 'value' => self::role_user],
      ['auth_key', 'default', 'value' => self::auth_key],
      ['role', 'in', 'range' => [self::role_user]],
    ];
  }
  /**
   * @inheritdoc
   */
  public static function findidentity($id)
  {
    return static::findone(['id' => $id, 'status' => self::status_active]);
  }
  /**
   * @inheritdoc
   */
  public static function findidentitybyaccesstoken($token, $type = null)
  {
    return static::findone(['access_token' => $token]);
    //throw new notsupportedexception('"findidentitybyaccesstoken" is not implemented.');
  }
  /**
   * finds user by username
   *
   * @param string $username
   * @return static|null
   */
  public static function findbyusername($username)
  {
    return static::findone(['username' => $username, 'status' => self::status_active]);
  }
  /**
   * finds user by password reset token
   *
   * @param string $token password reset token
   * @return static|null
   */
  public static function findbypasswordresettoken($token)
  {
    if (!static::ispasswordresettokenvalid($token)) {
      return null;
    }
    return static::findone([
      'password_reset_token' => $token,
      'status' => self::status_active,
    ]);
  }
  /**
   * finds out if password reset token is valid
   *
   * @param string $token password reset token
   * @return boolean
   */
  public static function ispasswordresettokenvalid($token)
  {
    if (empty($token)) {
      return false;
    }
    $expire = yii::$app->params['user.passwordresettokenexpire'];
    $parts = explode('_', $token);
    $timestamp = (int) end($parts);
    return $timestamp + $expire >= time();
  }
  /**
   * @inheritdoc
   */
  public function getid()
  {
    return $this->getprimarykey();
  }
  /**
   * @inheritdoc
   */
  public function getauthkey()
  {
    return $this->auth_key;
  }
  /**
   * @inheritdoc
   */
  public function validateauthkey($authkey)
  {
    return $this->getauthkey() === $authkey;
  }
  /**
   * validates password
   *
   * @param string $password password to validate
   * @return boolean if password provided is valid for current user
   */
  public function validatepassword($password)
  {
    return yii::$app->security->validatepassword($password, $this->password_hash);
  }
  /**
   * generates password hash from password and sets it to the model
   *
   * @param string $password
   */
  public function setpassword($password)
  {
    $this->password_hash = yii::$app->security->generatepasswordhash($password);
  }
  /**
   * generates "remember me" authentication key
   */
  public function generateauthkey()
  {
    $this->auth_key = yii::$app->security->generaterandomstring();
  }
  /**
   * generates new password reset token
   */
  public function generatepasswordresettoken()
  {
    $this->password_reset_token = yii::$app->security->generaterandomstring() . '_' . time();
  }
  /**
   * removes password reset token
   */
  public function removepasswordresettoken()
  {
    $this->password_reset_token = null;
  }
}

三、使用migrate 为后如初使化一个登陆帐号

1、console\controllers创建initcontroller.php

/**
 *
 * @author chan <maclechan@qq.com>
 */
namespace console\controllers;
use backend\models\admin ;
class initcontroller extends \yii\console\controller
{
  /**
   * create init user
   */
  public function actionadmin()
  {
    echo "创建一个新用户 ...\n";         // 提示当前操作
    $username = $this->prompt('user name:');    // 接收用户名
    $email = $this->prompt('email:');        // 接收email
    $password = $this->prompt('password:');     // 接收密码
    $model = new agadmin();              // 创建一个新用户
    $model->username = $username;          // 完成赋值
    $model->email = $email;
    $model->password = $password;
    if (!$model->save())              // 保存新的用户
    {
      foreach ($model->geterrors() as $error)   // 如果保存失败,说明有错误,那就输出错误信息。
      {
        foreach ($error as $e)
        {
          echo "$e\n";
        }
      }
      return 1;                  // 命令行返回1表示有异常
    }
    return 0;                    // 返回0表示一切ok
  }
}

2、使用命令:

在项目根目下,右键选择user composer here(前提是安装了全局的composer),
yii init/admin

YII Framework框架使用YIIC快速创建YII应用之migrate用法实例详解

到此,打开数据表看下,己经有了数据。

四、后台登陆验证

1、backend\controllers\sitecontroller.php 里actionlogin方法不用变

2、把common\models\loginform.php复制到backend\models只要把loginform.php里面的方法getuser()修改一个单词即可,如下

public function getuser()
{
    if ($this->_user === false) {
      $this->_user = admin::findbyusername($this->username);
    }
    return $this->_user;
}

3、backend\config\main.php 只要修改

'user' => [
  'identityclass' => 'backend\models\admin',
  'enableautologin' => true,
],

此外,在作修改时,请注意下命令空不要搞乱了。

到此,结束。

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