public function DatabaseSchema_mysql::fieldSetDefault

Set the default value for a field.

Parameters

string $table: The table to be altered.

string $field: The field to be altered.

mixed $default: Default value to be set. NULL for 'default NULL'.

Return value

void:

Throws

DatabaseSchemaObjectDoesNotExistException If the specified table or field doesn't exist.

Overrides DatabaseSchema::fieldSetDefault

File

core/includes/database/mysql/schema.inc, line 402

Database schema code for MySQL database servers.

Class

DatabaseSchema_mysql

Class to create and manipulate MySQL tables.

Code

public function fieldSetDefault($table, $field, $default) {
  if (!$this->fieldExists($table, $field)) {
    throw new DatabaseSchemaObjectDoesNotExistException(t("Cannot set default value of field @table.@field: field doesn't exist.", array(
      '@table' => $table,
      '@field' => $field,
    )));
  }

  if (!isset($default)) {
    $default = 'NULL';
  }
  else {
    $default = is_string($default) ? "'$default'" : $default;
  }

  $this->connection->query('ALTER TABLE {' . $table . '} ALTER COLUMN `' . $field . '` SET DEFAULT ' . $default);
}