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<?php |
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use yii\db\Migration; |
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/** |
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* Handles the dropping of table `media_stats`. |
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*/ |
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class m180513_085059_drop_media_stats_table 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->addColumn('media', 'likes', $this->integer()); |
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$this->addColumn('media', 'comments', $this->integer()); |
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$this->addColumn('media', 'account_followed_by', $this->integer()); |
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$this->addColumn('media', 'account_follows', $this->integer()); |
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$sql = 'SELECT * FROM media_stats WHERE id IN (SELECT MAX(id) FROM media_stats GROUP BY media_id)'; |
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$rows = Yii::$app->db->createCommand($sql) |
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->queryAll(); |
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foreach ($rows as $row) { |
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$this->update('media', [ |
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'likes' => $row['likes'], |
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'comments' => $row['comments'], |
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'account_followed_by' => $row['comments'], |
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'account_follows' => $row['account_follows'], |
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], ['id' => $row['media_id']]); |
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} |
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$this->dropForeignKey('fk_media_stats_media', 'media_stats'); |
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$this->dropTable('media_stats'); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function safeDown() |
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{ |
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$this->createTable('media_stats', [ |
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'id' => $this->primaryKey(), |
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'likes' => $this->integer(), |
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'comments' => $this->integer(), |
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'account_followed_by' => $this->integer(), |
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'account_follows' => $this->integer(), |
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'media_id' => $this->integer(), |
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]); |
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$this->addForeignKey('fk_media_stats_media', 'media_stats', 'media_id', 'media', 'id', 'CASCADE'); |
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$rows = Yii::$app->db->createCommand('SELECT * FROM media') |
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->queryAll(); |
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foreach ($rows as $row) { |
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$this->insert('media_stats', [ |
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'likes' => $row['likes'], |
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'comments' => $row['comments'], |
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'account_followed_by' => $row['account_followed_by'], |
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'account_follows' => $row['account_follows'], |
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'media_id' => $row['id'], |
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]); |
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} |
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$this->dropColumn('media', 'likes'); |
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$this->dropColumn('media', 'comments'); |
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$this->dropColumn('media', 'account_followed_by'); |
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$this->dropColumn('media', 'account_follows'); |
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} |
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} |
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