发布于 2016-04-02 02:05:53 | 142 次阅读 | 评论: 0 | 来源: 网友投递

这里有新鲜出炉的YII 2.0教程,程序狗速度看过来!

Yii高性能PHP框架

Yii Framework是一个基于组件、用于开发大型 Web 应用的高性能 PHP 框架。Yii提供了今日Web 2.0应用开发所需要的几乎一切功能。Yii是最有效率的PHP框架之一。Yii是创始人薛强的心血结晶,于2008年1月1日开始开发。


这篇文章主要介绍了YII Framework框架使用YIIC快速创建YII应用之migrate用法,详细分析了migrate的功能与用法,并给出创建登录后台的实例讲述了migrate的相关使用技巧,需要的朋友可以参考下

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。

http://www.yiiframework.com/doc/guide/1.1/zh_cn/database.migration#creating-migrations

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://stackoverflow.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

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

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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