drupal_get_schema_unprocessed

• Drupal 6
• Drupal 7

includes/common.inc, line 3272

Versions

6 – 7

drupal_get_schema_unprocessed($module, $table = NULL)

Returns the unprocessed and unaltered version of a module's schema.

Use this function only if you explicitly need the original specification of a schema, as it was defined in a module's hook_schema(). No additional default values will be set, hook_schema_alter() is not invoked and these unprocessed definitions won't be cached.

This function can be used to retrieve a schema specification in hook_schema(), so it allows you to derive your tables from existing specifications.

It is also used by drupal_install_schema() and drupal_uninstall_schema() to ensure that a module's tables are created exactly as specified without any changes introduced by a module that implements hook_schema_alter().

Parameters

$module The module to which the table belongs.

$table The name of the table. If not given, the module's complete schema is returned.

Related topics

Schema API

A Drupal schema definition is an array structure representing one or more tables and their related keys and indexes. A schema is defined by hook_schema(), which usually lives in a modulename.install file.

Code

<?php
function drupal_get_schema_unprocessed($module, $table = NULL) {
  // Load the .install file to get hook_schema.
  module_load_include('install', $module);
  $schema = module_invoke($module, 'schema');

  if (!is_null($table) && isset($schema[$table])) {
    return $schema[$table];
  }
  else {
    return $schema;
  }
}
?>