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
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/*/www/yii_dev/yii/framework# php yiic migrate helpError: Unknown action: helpUSAGE 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 migrateApplies ALL new migrations. This is equivalent to 'yiic migrate to'.* yiic migrate create create_user_tableCreates a new migration named 'create_user_table'.* yiic migrate up 3Applies the next 3 new migrations.* yiic migrate downReverts the last applied migration.* yiic migrate down 3Reverts the last 3 applied migrations.* yiic migrate to 101129_185401Migrates up or down to version 101129_185401.* yiic migrate mark 101129_185401Modifies the migration history up or down to version 101129_185401.No actual migration will be performed.* yiic migrate historyShows all previously applied migration information.* yiic migrate history 10Shows the last 10 applied migrations.* yiic migrate newShows all new migrations.* yiic migrate new 10Shows 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
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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
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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
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/** * * @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
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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
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'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。
希望本文所述对大家基于Yii框架的PHP程序设计有所帮助。
