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version 2.0.1 84b42ab
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182
framework/console/controllers/MigrateController.php
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182
framework/console/controllers/MigrateController.php
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<?php
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/**
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* @link http://www.yiiframework.com/
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* @copyright Copyright (c) 2008 Yii Software LLC
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* @license http://www.yiiframework.com/license/
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*/
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namespace yii\console\controllers;
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use Yii;
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use yii\console\Exception;
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use yii\db\Connection;
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use yii\db\Query;
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use yii\helpers\ArrayHelper;
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use yii\helpers\Console;
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/**
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* Manages application migrations.
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*
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* A migration means a set of persistent changes to the application environment
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* that is shared among different developers. For example, in an application
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* backed by a database, a migration may refer to a set of changes to
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* the database, such as creating a new table, adding a new table column.
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*
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* This command provides support for tracking the migration history, upgrading
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* or downloading with migrations, and creating new migration skeletons.
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*
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* The migration history is stored in a database table named
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* as [[migrationTable]]. The table will be automatically created the first time
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* this command is executed, if it does not exist. You may also manually
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* create it as follows:
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*
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* ~~~
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* CREATE TABLE migration (
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* version varchar(180) PRIMARY KEY,
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* apply_time integer
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* )
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* ~~~
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*
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* Below are some common usages of this command:
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*
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* ~~~
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* # creates a new migration named 'create_user_table'
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* yii migrate/create create_user_table
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*
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* # applies ALL new migrations
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* yii migrate
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*
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* # reverts the last applied migration
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* yii migrate/down
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* ~~~
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*
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* @author Qiang Xue <qiang.xue@gmail.com>
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* @since 2.0
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*/
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class MigrateController extends BaseMigrateController
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{
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/**
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* @var string the name of the table for keeping applied migration information.
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*/
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public $migrationTable = '{{%migration}}';
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/**
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* @inheritdoc
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*/
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public $templateFile = '@yii/views/migration.php';
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/**
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* @var Connection|string the DB connection object or the application
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* component ID of the DB connection.
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*/
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public $db = 'db';
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/**
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* @inheritdoc
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*/
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public function options($actionID)
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{
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return array_merge(
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parent::options($actionID),
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['migrationTable', 'db'] // global for all actions
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);
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}
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/**
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* This method is invoked right before an action is to be executed (after all possible filters.)
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* It checks the existence of the [[migrationPath]].
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* @param \yii\base\Action $action the action to be executed.
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* @throws Exception if db component isn't configured
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* @return boolean whether the action should continue to be executed.
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*/
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public function beforeAction($action)
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{
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if (parent::beforeAction($action)) {
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if ($action->id !== 'create') {
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if (is_string($this->db)) {
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$this->db = Yii::$app->get($this->db);
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}
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if (!$this->db instanceof Connection) {
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throw new Exception("The 'db' option must refer to the application component ID of a DB connection.");
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}
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}
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return true;
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} else {
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return false;
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}
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}
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/**
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* Creates a new migration instance.
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* @param string $class the migration class name
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* @return \yii\db\Migration the migration instance
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*/
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protected function createMigration($class)
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{
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$file = $this->migrationPath . DIRECTORY_SEPARATOR . $class . '.php';
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require_once($file);
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return new $class(['db' => $this->db]);
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}
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/**
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* @inheritdoc
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*/
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protected function getMigrationHistory($limit)
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{
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if ($this->db->schema->getTableSchema($this->migrationTable, true) === null) {
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$this->createMigrationHistoryTable();
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}
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$query = new Query;
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$rows = $query->select(['version', 'apply_time'])
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->from($this->migrationTable)
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->orderBy('version DESC')
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->limit($limit)
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->createCommand($this->db)
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->queryAll();
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$history = ArrayHelper::map($rows, 'version', 'apply_time');
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unset($history[self::BASE_MIGRATION]);
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return $history;
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}
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/**
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* Creates the migration history table.
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*/
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protected function createMigrationHistoryTable()
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{
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$tableName = $this->db->schema->getRawTableName($this->migrationTable);
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$this->stdout("Creating migration history table \"$tableName\"...", Console::FG_YELLOW);
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$this->db->createCommand()->createTable($this->migrationTable, [
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'version' => 'varchar(180) NOT NULL PRIMARY KEY',
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'apply_time' => 'integer',
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])->execute();
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$this->db->createCommand()->insert($this->migrationTable, [
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'version' => self::BASE_MIGRATION,
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'apply_time' => time(),
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])->execute();
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$this->stdout("Done.\n", Console::FG_GREEN);
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}
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/**
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* @inheritdoc
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*/
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protected function addMigrationHistory($version)
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{
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$command = $this->db->createCommand();
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$command->insert($this->migrationTable, [
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'version' => $version,
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'apply_time' => time(),
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])->execute();
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}
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/**
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* @inheritdoc
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*/
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protected function removeMigrationHistory($version)
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{
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$command = $this->db->createCommand();
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$command->delete($this->migrationTable, [
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'version' => $version,
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])->execute();
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}
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}
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