framework/console/controllers/MigrateController.php
protected function truncateDatabase()
    {
        $db = $this->db;
        $schemas = $db->schema->getTableSchemas();

        // First drop all foreign keys,
        foreach ($schemas as $schema) {
            if ($schema->foreignKeys) {
                foreach ($schema->foreignKeys as $name => $foreignKey) {
                    $db->createCommand()->dropForeignKey($name, $schema->name)->execute();
                    $this->stdout("Foreign key $name dropped.\n");
                }
            }
        }

        // Then drop the tables:
        foreach ($schemas as $schema) {
            try {
                $db->createCommand()->dropTable($schema->name)->execute();
                $this->stdout("Table {$schema->name} dropped.\n");
            } catch (\Exception $e) {
                if (strpos($e->getMessage(), 'DROP VIEW to delete view') !== false) {
                    $db->createCommand()->dropView($schema->name)->execute();
                    $this->stdout("View {$schema->name} dropped.\n");
                } else {
                    $this->stdout("Cannot drop {$schema->name} Table .\n");
                }
            }
        }
    }
protected function truncateDatabase()
    {
        $db = $this->db;
        $schemas = $db->schema->getTableSchemas();

        // First drop all foreign keys,
        foreach ($schemas as $schema) {
            if ($schema->foreignKeys) {
                foreach ($schema->foreignKeys as $name => $foreignKey) {
                    $db->createCommand()->dropForeignKey($name, $schema->name)->execute();
                    $this->stdout("Foreign key $name dropped.\n");
                }
            }
        }

        // Then drop the tables:
        foreach ($schemas as $schema) {
            try {
                $db->createCommand()->dropTable($schema->name)->execute();
                $this->stdout("Table {$schema->name} dropped.\n");
            } catch (\Exception $e) {
                if (strpos($e->getMessage(), 'DROP VIEW to delete view') !== false) {
                    $db->createCommand()->dropView($schema->name)->execute();
                    $this->stdout("View {$schema->name} dropped.\n");
                } else {
                    $this->stdout("Cannot drop {$schema->name} Table .\n");
                }
            }
        }
    }
{@inheritdoc}
@since 2.0.13