Same name in this branch
  1. 10 core/lib/Drupal/Core/Database/Query/Update.php \Drupal\Core\Database\Query\Update
  2. 10 core/lib/Drupal/Core/Database/Driver/pgsql/Update.php \Drupal\Core\Database\Driver\pgsql\Update
  3. 10 core/modules/mysql/src/Driver/Database/mysql/Update.php \Drupal\mysql\Driver\Database\mysql\Update
  4. 10 core/modules/pgsql/src/Driver/Database/pgsql/Update.php \Drupal\pgsql\Driver\Database\pgsql\Update
  5. 10 core/modules/sqlite/src/Driver/Database/sqlite/Update.php \Drupal\sqlite\Driver\Database\sqlite\Update
Same name and namespace in other branches
  1. 8.9.x core/lib/Drupal/Core/Database/Query/Update.php \Drupal\Core\Database\Query\Update
  2. 9 core/lib/Drupal/Core/Database/Query/Update.php \Drupal\Core\Database\Query\Update

General class for an abstracted UPDATE operation.

Hierarchy

Expanded class hierarchy of Update

Related topics

4 files declare their use of Update
StubConnection.php in core/tests/Drupal/Tests/Core/Database/Stub/StubConnection.php
Update.php in core/modules/mysql/src/Driver/Database/mysql/Update.php
Update.php in core/modules/pgsql/src/Driver/Database/pgsql/Update.php
Update.php in core/modules/sqlite/src/Driver/Database/sqlite/Update.php
23 string references to 'Update'
BlockFormMessagesTest::testValidationMessage in core/modules/layout_builder/tests/src/FunctionalJavascript/BlockFormMessagesTest.php
Tests that validation messages are shown on the block form.
CommentAdminOverview::buildForm in core/modules/comment/src/Form/CommentAdminOverview.php
Form constructor for the comment overview administration form.
CommentAdminTest::testApprovalAdminInterface in core/modules/comment/tests/src/Functional/CommentAdminTest.php
Tests comment approval functionality through admin/content/comment.
CommentAdminTest::testCommentedTranslationDeletion in core/modules/comment/tests/src/Functional/CommentAdminTest.php
Tests commented translation deletion admin view.
CommentNonNodeTest::performCommentOperation in core/modules/comment/tests/src/Functional/CommentNonNodeTest.php
Performs the specified operation on the specified comment.

... See full list

File

core/lib/Drupal/Core/Database/Query/Update.php, line 13

Namespace

Drupal\Core\Database\Query
View source
class Update extends Query implements ConditionInterface {
  use QueryConditionTrait;

  /**
   * The table to update.
   *
   * @var string
   */
  protected $table;

  /**
   * An array of fields that will be updated.
   *
   * @var array
   */
  protected $fields = [];

  /**
   * An array of values to update to.
   *
   * @var array
   */
  protected $arguments = [];

  /**
   * Array of fields to update to an expression in case of a duplicate record.
   *
   * This variable is a nested array in the following format:
   * @code
   * <some field> => array(
   *  'condition' => <condition to execute, as a string>,
   *  'arguments' => <array of arguments for condition, or NULL for none>,
   * );
   * @endcode
   *
   * @var array
   */
  protected $expressionFields = [];

  /**
   * Constructs an Update query object.
   *
   * @param \Drupal\Core\Database\Connection $connection
   *   A Connection object.
   * @param string $table
   *   Name of the table to associate with this query.
   * @param array $options
   *   Array of database options.
   */
  public function __construct(Connection $connection, $table, array $options = []) {

    // @todo Remove $options['return'] in Drupal 11.
    // @see https://www.drupal.org/project/drupal/issues/3256524
    $options['return'] = Database::RETURN_AFFECTED;
    parent::__construct($connection, $options);
    $this->table = $table;
    $this->condition = $this->connection
      ->condition('AND');
  }

  /**
   * Adds a set of field->value pairs to be updated.
   *
   * @param $fields
   *   An associative array of fields to write into the database. The array keys
   *   are the field names and the values are the values to which to set them.
   *
   * @return $this
   *   The called object.
   */
  public function fields(array $fields) {
    $this->fields = $fields;
    return $this;
  }

  /**
   * Specifies fields to be updated as an expression.
   *
   * Expression fields are cases such as counter=counter+1. This method takes
   * precedence over fields().
   *
   * @param $field
   *   The field to set.
   * @param $expression
   *   The field will be set to the value of this expression. This parameter
   *   may include named placeholders.
   * @param $arguments
   *   If specified, this is an array of key/value pairs for named placeholders
   *   corresponding to the expression.
   *
   * @return $this
   *   The called object.
   */
  public function expression($field, $expression, array $arguments = NULL) {
    $this->expressionFields[$field] = [
      'expression' => $expression,
      'arguments' => $arguments,
    ];
    return $this;
  }

  /**
   * Executes the UPDATE query.
   *
   * @return int|null
   *   The number of rows matched by the update query. This includes rows that
   *   actually didn't have to be updated because the values didn't change.
   */
  public function execute() {

    // Expressions take priority over literal fields, so we process those first
    // and remove any literal fields that conflict.
    $fields = $this->fields;
    $update_values = [];
    foreach ($this->expressionFields as $field => $data) {
      if (!empty($data['arguments'])) {
        $update_values += $data['arguments'];
      }
      if ($data['expression'] instanceof SelectInterface) {
        $data['expression']
          ->compile($this->connection, $this);
        $update_values += $data['expression']
          ->arguments();
      }
      unset($fields[$field]);
    }

    // Because we filter $fields the same way here and in __toString(), the
    // placeholders will all match up properly.
    $max_placeholder = 0;
    foreach ($fields as $value) {
      $update_values[':db_update_placeholder_' . $max_placeholder++] = $value;
    }
    if (count($this->condition)) {
      $this->condition
        ->compile($this->connection, $this);
      $update_values = array_merge($update_values, $this->condition
        ->arguments());
    }
    $stmt = $this->connection
      ->prepareStatement((string) $this, $this->queryOptions, TRUE);
    try {
      $stmt
        ->execute($update_values, $this->queryOptions);
      return $stmt
        ->rowCount();
    } catch (\Exception $e) {
      $this->connection
        ->exceptionHandler()
        ->handleExecutionException($e, $stmt, $update_values, $this->queryOptions);
    }
  }

  /**
   * Implements PHP magic __toString method to convert the query to a string.
   *
   * @return string
   *   The prepared statement.
   */
  public function __toString() {

    // Create a sanitized comment string to prepend to the query.
    $comments = $this->connection
      ->makeComment($this->comments);

    // Expressions take priority over literal fields, so we process those first
    // and remove any literal fields that conflict.
    $fields = $this->fields;
    $update_fields = [];
    foreach ($this->expressionFields as $field => $data) {
      if ($data['expression'] instanceof SelectInterface) {

        // Compile and cast expression subquery to a string.
        $data['expression']
          ->compile($this->connection, $this);
        $data['expression'] = ' (' . $data['expression'] . ')';
      }
      $update_fields[] = $this->connection
        ->escapeField($field) . '=' . $data['expression'];
      unset($fields[$field]);
    }
    $max_placeholder = 0;
    foreach ($fields as $field => $value) {
      $update_fields[] = $this->connection
        ->escapeField($field) . '=:db_update_placeholder_' . $max_placeholder++;
    }
    $query = $comments . 'UPDATE {' . $this->connection
      ->escapeTable($this->table) . '} SET ' . implode(', ', $update_fields);
    if (count($this->condition)) {
      $this->condition
        ->compile($this->connection, $this);

      // There is an implicit string cast on $this->condition.
      $query .= "\nWHERE " . $this->condition;
    }
    return $query;
  }

}

Members

Namesort descending Modifiers Type Description Overrides
Query::$comments protected property An array of comments that can be prepended to a query.
Query::$connection protected property The connection object on which to run this query.
Query::$connectionKey protected property The key of the connection object.
Query::$connectionTarget protected property The target of the connection object.
Query::$nextPlaceholder protected property The placeholder counter.
Query::$queryOptions protected property The query options to pass on to the connection object.
Query::$uniqueIdentifier protected property A unique identifier for this query object.
Query::comment public function Adds a comment to the query.
Query::getComments public function Returns a reference to the comments array for the query.
Query::getConnection public function Gets the database connection to be used for the query.
Query::nextPlaceholder public function Gets the next placeholder value for this query object. Overrides PlaceholderInterface::nextPlaceholder
Query::uniqueIdentifier public function Returns a unique identifier for this object. Overrides PlaceholderInterface::uniqueIdentifier
Query::__clone public function Implements the magic __clone function.
Query::__sleep public function Implements the magic __sleep function to disconnect from the database.
Query::__wakeup public function Implements the magic __wakeup function to reconnect to the database.
QueryConditionTrait::$condition protected property The condition object for this query.
QueryConditionTrait::alwaysFalse public function
QueryConditionTrait::andConditionGroup public function
QueryConditionTrait::arguments public function
QueryConditionTrait::compile public function
QueryConditionTrait::compiled public function
QueryConditionTrait::condition public function
QueryConditionTrait::conditionGroupFactory public function
QueryConditionTrait::conditions public function
QueryConditionTrait::exists public function
QueryConditionTrait::isNotNull public function
QueryConditionTrait::isNull public function
QueryConditionTrait::notExists public function
QueryConditionTrait::orConditionGroup public function
QueryConditionTrait::where public function
Update::$arguments protected property An array of values to update to.
Update::$expressionFields protected property Array of fields to update to an expression in case of a duplicate record.
Update::$fields protected property An array of fields that will be updated.
Update::$table protected property The table to update.
Update::execute public function Executes the UPDATE query. Overrides Query::execute 1
Update::expression public function Specifies fields to be updated as an expression.
Update::fields public function Adds a set of field->value pairs to be updated.
Update::__construct public function Constructs an Update query object. Overrides Query::__construct 3
Update::__toString public function Implements PHP magic __toString method to convert the query to a string. Overrides Query::__toString