![The start…
php.net/pdo
<?php
abstract class DatabaseConnection extends
PDO
…
// Drupal fun…
// Because the other methods don't seem to work right.
$driver_options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;](https://image.slidesharecdn.com/andriypodanenko-drupaldatabaseapi-drupalcampkyiv2011-110615094851-phpapp02/85/Andriy-Podanenko-Drupal-database-api-DrupalCamp-Kyiv-2011-5-320.jpg)
Andriy Podanenko.Drupal database api.DrupalCamp Kyiv 2011
- 1. Drupal 7 Database API Andriy Podanenko [email protected]
- 2. Gold Sponsor of DrupalCamp Kyiv 2011
- 3. Silver Sponsors of DrupalCamp Kyiv 2011
- 4. Server configuration PHP 5.0+ (5.3+ recommended) php5-pdo php5-pdo_mysql php5-pdo_pgsql php5-pdo_sqlite mysql, postgres… Apache1.3+ (or php cgi enabled web server)
- 5. The start… php.net/pdo <?php abstract class DatabaseConnection extends PDO … // Drupal fun… // Because the other methods don't seem to work right. $driver_options[PDO::ATTR_ERRMODE] = PDO::ERRMODE_EXCEPTION;
- 6. Class Hierarhy abstract class DatabaseConnection extends PDO… DatabaseConnection DatabaseConnection::select db_select (SelectQuery) DatabaseConnection::delete db_delete (DeleteQuery) DatabaseConnection::update db_update (UpdateQuery) DatabaseConnection::query db_query (DatabaseStatementInterface) DatabaseConnection::insert db_insert (InsertQuery) DatabaseConnection::merge db_merge (MergeQuery) …
- 7. DatabaseStatementInterface • execute ($args=array(), $options=array()) • fetchAllAssoc ($key, $fetch=NULL) • fetchAllKeyed ($key_index=0, $value_index=1) • fetchAssoc () • fetchCol ($index=0) • fetchField ($index=0) • getQueryString () • rowCount () (UPDATE, DELETE, INSERT only)
- 9. db_select SELECT name,description FROM taxonomy_term_data AS ttd WHERE tid LIKE 79 <?php //Drupal $result = db_select('taxonomy_term_data', 'ttd'); //returned SelectQuery $ret = $result -> fields('ttd', array('name', 'description')); //returned SelectQueryInterface $ret = $result -> condition('tid', 79, 'like'); // returned QueryConditionInterface $ret = $result -> execute(); // returned SelectQuery object $data = $ret -> fetchAll(); // fetched data as object from database
- 10. Other database (target) $result = db_select('taxonomy_term_data', 'ttd', array('target' => 'slave')); // adding other database at runtime Database::addConnectionInfo('default', 'slave', array( 'database' => ‘other_db', 'username' => ‘name', 'password' => 'pass', 'host' => 'localhost', 'port' => '5432', 'driver' => 'pgsql'));
- 11. DatabaseTransaction (innodb,pgsql) <?php function demo_transaction() $temp = db_transaction(); db_update… // charging account1 +100$ db_update… // charging account2 -100$ db_insert… // creating log entry for that return TRUE; // automatically commit (no $temp) } //
- 12. $error->handle try{} catch{} <?php function demo_transaction() $temp = db_transaction(); try { db_insert… // some ugly code here… return TRUE; } catch(Exception $e) { $temp->rollback(); watchdog(‘demo error', print_r($e, TRUE)}
- 13. logging -> DatabaseLog $demo_log = new DatabaseLog; $demo_log->start(‘some_key’); db_update… db_select… // Calling functions or any… $demo_log->end(‘some_key’); print_r($demo_log->get(‘some_key’), TRUE); // printed indexed array for all queries…
- 14. Drupal 6 – dbtng module (backport) drupal.org/project/dbtng dbtng_* (full functions list in dbtng.module) dbtng_query dbtng_set_active db_select • good for support old sites • multi database setup possibility for Drupal 6 • preparing code for upgrade
- 15. Useful links • api.drupal.org/api/drupal/7 • drupal.org/developing/api/database • upgrade.boombatower.com/tools/sql/inline • drupal.org/project/coder • php.net/pdo • drupal.org/project/dbtng • drupal.org/node/310069
- 16. Drupal DB api->executed(); twitter.com/podarok facebook.com/podarok vkontakte.ru/podarokua [email protected] drupal.org/user/116002 drupal.ua/user/23 http://simbioz.ua