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101 lines
2.0 KiB
101 lines
2.0 KiB
<?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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return <<<CODE |
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<?php |
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use yii\db\Migration; |
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/** |
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* Handles the creation of table `post_tag`. |
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* Has foreign keys to the tables: |
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* |
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* - `post` |
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* - `tag` |
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*/ |
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class {$class} extends Migration |
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{ |
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/** |
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* @inheritdoc |
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*/ |
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public function safeUp() |
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{ |
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\$this->createTable('post_tag', [ |
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'post_id' => \$this->integer(), |
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'tag_id' => \$this->integer(), |
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'PRIMARY KEY(post_id, tag_id)', |
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]); |
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// creates index for column `post_id` |
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\$this->createIndex( |
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'idx-post_tag-post_id', |
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'post_tag', |
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'post_id' |
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); |
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// add foreign key for table `post` |
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\$this->addForeignKey( |
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'fk-post_tag-post_id', |
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'post_tag', |
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'post_id', |
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'post', |
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'id', |
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'CASCADE' |
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); |
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// creates index for column `tag_id` |
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\$this->createIndex( |
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'idx-post_tag-tag_id', |
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'post_tag', |
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'tag_id' |
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); |
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// add foreign key for table `tag` |
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\$this->addForeignKey( |
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'fk-post_tag-tag_id', |
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'post_tag', |
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'tag_id', |
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'tag', |
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'id', |
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'CASCADE' |
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); |
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} |
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/** |
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* @inheritdoc |
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*/ |
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public function safeDown() |
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{ |
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// drops foreign key for table `post` |
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\$this->dropForeignKey( |
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'fk-post_tag-post_id', |
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'post_tag' |
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); |
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// drops index for column `post_id` |
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\$this->dropIndex( |
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'idx-post_tag-post_id', |
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'post_tag' |
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); |
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// drops foreign key for table `tag` |
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\$this->dropForeignKey( |
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'fk-post_tag-tag_id', |
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'post_tag' |
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); |
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// drops index for column `tag_id` |
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\$this->dropIndex( |
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'idx-post_tag-tag_id', |
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'post_tag' |
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); |
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\$this->dropTable('post_tag'); |
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} |
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} |
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CODE;
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