update.inc in Zircon Profile 8
Same filename and directory in other branches
Drupal database update API.
This file contains functions to perform database updates for a Drupal installation. It is included and used extensively by update.php.
File
core/includes/update.incView source
<?php
/**
* @file
* Drupal database update API.
*
* This file contains functions to perform database updates for a Drupal
* installation. It is included and used extensively by update.php.
*/
use Drupal\Component\Graph\Graph;
use Drupal\Core\Utility\Error;
/**
* Disables any extensions that are incompatible with the current core version.
*/
function update_fix_compatibility() {
$extension_config = \Drupal::configFactory()
->getEditable('core.extension');
$save = FALSE;
foreach (array(
'module',
'theme',
) as $type) {
foreach ($extension_config
->get($type) as $name => $weight) {
if (update_check_incompatibility($name, $type)) {
$extension_config
->clear("{$type}.{$name}");
$save = TRUE;
}
}
}
if ($save) {
$extension_config
->set('module', module_config_sort($extension_config
->get('module')));
$extension_config
->save();
}
}
/**
* Tests the compatibility of a module or theme.
*/
function update_check_incompatibility($name, $type = 'module') {
static $themes, $modules;
// Store values of expensive functions for future use.
if (empty($themes) || empty($modules)) {
// We need to do a full rebuild here to make sure the database reflects any
// code changes that were made in the filesystem before the update script
// was initiated.
$themes = \Drupal::service('theme_handler')
->rebuildThemeData();
$modules = system_rebuild_module_data();
}
if ($type == 'module' && isset($modules[$name])) {
$file = $modules[$name];
}
elseif ($type == 'theme' && isset($themes[$name])) {
$file = $themes[$name];
}
if (!isset($file) || !isset($file->info['core']) || $file->info['core'] != \Drupal::CORE_COMPATIBILITY || version_compare(phpversion(), $file->info['php']) < 0) {
return TRUE;
}
return FALSE;
}
/**
* Returns whether the minimum schema requirement has been satisfied.
*
* @return array
* A requirements info array.
*/
function update_system_schema_requirements() {
$requirements = array();
$system_schema = drupal_get_installed_schema_version('system');
$requirements['minimum schema']['title'] = 'Minimum schema version';
if ($system_schema >= \Drupal::CORE_MINIMUM_SCHEMA_VERSION) {
$requirements['minimum schema'] += array(
'value' => 'The installed schema version meets the minimum.',
'description' => 'Schema version: ' . $system_schema,
);
}
else {
$requirements['minimum schema'] += array(
'value' => 'The installed schema version does not meet the minimum.',
'severity' => REQUIREMENT_ERROR,
'description' => 'Your system schema version is ' . $system_schema . '. Updating directly from a schema version prior to 8000 is not supported. You must <a href="https://www.drupal.org/node/2179269">migrate your site to Drupal 8</a> first.',
);
}
return $requirements;
}
/**
* Checks update requirements and reports errors and (optionally) warnings.
*/
function update_check_requirements() {
// Check requirements of all loaded modules.
$requirements = \Drupal::moduleHandler()
->invokeAll('requirements', array(
'update',
));
$requirements += update_system_schema_requirements();
return $requirements;
}
/**
* Forces a module to a given schema version.
*
* This function is rarely necessary.
*
* @param string $module
* Name of the module.
* @param string $schema_version
* The schema version the module should be set to.
*/
function update_set_schema($module, $schema_version) {
\Drupal::keyValue('system.schema')
->set($module, $schema_version);
// system_list_reset() is in module.inc but that would only be available
// once the variable bootstrap is done.
require_once __DIR__ . '/module.inc';
system_list_reset();
}
/**
* Implements callback_batch_operation().
*
* Performs one update and stores the results for display on the results page.
*
* If an update function completes successfully, it should return a message
* as a string indicating success, for example:
* @code
* return t('New index added successfully.');
* @endcode
*
* Alternatively, it may return nothing. In that case, no message
* will be displayed at all.
*
* If it fails for whatever reason, it should throw an instance of
* Drupal\Core\Utility\UpdateException with an appropriate error message, for
* example:
* @code
* use Drupal\Core\Utility\UpdateException;
* throw new UpdateException(t('Description of what went wrong'));
* @endcode
*
* If an exception is thrown, the current update and all updates that depend on
* it will be aborted. The schema version will not be updated in this case, and
* all the aborted updates will continue to appear on update.php as updates
* that have not yet been run.
*
* If an update function needs to be re-run as part of a batch process, it
* should accept the $sandbox array by reference as its first parameter
* and set the #finished property to the percentage completed that it is, as a
* fraction of 1.
*
* @param $module
* The module whose update will be run.
* @param $number
* The update number to run.
* @param $dependency_map
* An array whose keys are the names of all update functions that will be
* performed during this batch process, and whose values are arrays of other
* update functions that each one depends on.
* @param $context
* The batch context array.
*
* @see update_resolve_dependencies()
*/
function update_do_one($module, $number, $dependency_map, &$context) {
$function = $module . '_update_' . $number;
// If this update was aborted in a previous step, or has a dependency that
// was aborted in a previous step, go no further.
if (!empty($context['results']['#abort']) && array_intersect($context['results']['#abort'], array_merge($dependency_map, array(
$function,
)))) {
return;
}
$ret = array();
if (function_exists($function)) {
try {
$ret['results']['query'] = $function($context['sandbox']);
$ret['results']['success'] = TRUE;
} catch (Exception $e) {
watchdog_exception('update', $e);
$variables = Error::decodeException($e);
unset($variables['backtrace']);
$ret['#abort'] = array(
'success' => FALSE,
'query' => t('%type: @message in %function (line %line of %file).', $variables),
);
}
}
if (isset($context['sandbox']['#finished'])) {
$context['finished'] = $context['sandbox']['#finished'];
unset($context['sandbox']['#finished']);
}
if (!isset($context['results'][$module])) {
$context['results'][$module] = array();
}
if (!isset($context['results'][$module][$number])) {
$context['results'][$module][$number] = array();
}
$context['results'][$module][$number] = array_merge($context['results'][$module][$number], $ret);
if (!empty($ret['#abort'])) {
// Record this function in the list of updates that were aborted.
$context['results']['#abort'][] = $function;
}
// Record the schema update if it was completed successfully.
if ($context['finished'] == 1 && empty($ret['#abort'])) {
drupal_set_installed_schema_version($module, $number);
}
$context['message'] = t('Updating @module', [
'@module' => $module,
]);
}
/**
* Executes a single hook_post_update_NAME().
*
* @param string $function
* The function name, that should be executed.
* @param array $context
* The batch context array.
*/
function update_invoke_post_update($function, &$context) {
$ret = [];
// If this update was aborted in a previous step, or has a dependency that was
// aborted in a previous step, go no further.
if (!empty($context['results']['#abort'])) {
return;
}
list($module, $name) = explode('_post_update_', $function, 2);
module_load_include('php', $module, $module . '.post_update');
if (function_exists($function)) {
try {
$ret['results']['query'] = $function($context['sandbox']);
$ret['results']['success'] = TRUE;
if (!isset($context['sandbox']['#finished']) || isset($context['sandbox']['#finished']) && $context['sandbox']['#finished'] >= 1) {
\Drupal::service('update.post_update_registry')
->registerInvokedUpdates([
$function,
]);
}
} catch (Exception $e) {
watchdog_exception('update', $e);
$variables = Error::decodeException($e);
unset($variables['backtrace']);
$ret['#abort'] = [
'success' => FALSE,
'query' => t('%type: @message in %function (line %line of %file).', $variables),
];
}
}
if (isset($context['sandbox']['#finished'])) {
$context['finished'] = $context['sandbox']['#finished'];
unset($context['sandbox']['#finished']);
}
if (!isset($context['results'][$module][$name])) {
$context['results'][$module][$name] = array();
}
$context['results'][$module][$name] = array_merge($context['results'][$module][$name], $ret);
if (!empty($ret['#abort'])) {
// Record this function in the list of updates that were aborted.
$context['results']['#abort'][] = $function;
}
$context['message'] = t('Post updating @module', [
'@module' => $module,
]);
}
/**
* Returns a list of all the pending database updates.
*
* @return
* An associative array keyed by module name which contains all information
* about database updates that need to be run, and any updates that are not
* going to proceed due to missing requirements. The system module will
* always be listed first.
*
* The subarray for each module can contain the following keys:
* - start: The starting update that is to be processed. If this does not
* exist then do not process any updates for this module as there are
* other requirements that need to be resolved.
* - warning: Any warnings about why this module can not be updated.
* - pending: An array of all the pending updates for the module including
* the update number and the description from source code comment for
* each update function. This array is keyed by the update number.
*/
function update_get_update_list() {
// Make sure that the system module is first in the list of updates.
$ret = array(
'system' => array(),
);
$modules = drupal_get_installed_schema_version(NULL, FALSE, TRUE);
foreach ($modules as $module => $schema_version) {
// Skip uninstalled and incompatible modules.
if ($schema_version == SCHEMA_UNINSTALLED || update_check_incompatibility($module)) {
continue;
}
// Display a requirements error if the user somehow has a schema version
// from the previous Drupal major version.
if ($schema_version < \Drupal::CORE_MINIMUM_SCHEMA_VERSION) {
$ret[$module]['warning'] = '<em>' . $module . '</em> module cannot be updated. Its schema version is ' . $schema_version . ', which is from an earlier major release of Drupal. You will need to <a href="https://www.drupal.org/node/2127611">migrate the data for this module</a> instead.';
continue;
}
// Otherwise, get the list of updates defined by this module.
$updates = drupal_get_schema_versions($module);
if ($updates !== FALSE) {
// \Drupal::moduleHandler()->invoke() returns NULL for non-existing hooks,
// so if no updates are removed, it will == 0.
$last_removed = \Drupal::moduleHandler()
->invoke($module, 'update_last_removed');
if ($schema_version < $last_removed) {
$ret[$module]['warning'] = '<em>' . $module . '</em> module cannot be updated. Its schema version is ' . $schema_version . '. Updates up to and including ' . $last_removed . ' have been removed in this release. In order to update <em>' . $module . '</em> module, you will first <a href="https://www.drupal.org/upgrade">need to upgrade</a> to the last version in which these updates were available.';
continue;
}
$updates = array_combine($updates, $updates);
foreach (array_keys($updates) as $update) {
if ($update == \Drupal::CORE_MINIMUM_SCHEMA_VERSION) {
$ret[$module]['warning'] = '<em>' . $module . '</em> module cannot be updated. It contains an update numbered as ' . \Drupal::CORE_MINIMUM_SCHEMA_VERSION . ' which is reserved for the earliest installation of a module in Drupal ' . \Drupal::CORE_COMPATIBILITY . ', before any updates. In order to update <em>' . $module . '</em> module, you will need to install a version of the module with valid updates.';
continue 2;
}
if ($update > $schema_version) {
// The description for an update comes from its Doxygen.
$func = new ReflectionFunction($module . '_update_' . $update);
$description = str_replace(array(
"\n",
'*',
'/',
), '', $func
->getDocComment());
$ret[$module]['pending'][$update] = "{$update} - {$description}";
if (!isset($ret[$module]['start'])) {
$ret[$module]['start'] = $update;
}
}
}
if (!isset($ret[$module]['start']) && isset($ret[$module]['pending'])) {
$ret[$module]['start'] = $schema_version;
}
}
}
if (empty($ret['system'])) {
unset($ret['system']);
}
return $ret;
}
/**
* Resolves dependencies in a set of module updates, and orders them correctly.
*
* This function receives a list of requested module updates and determines an
* appropriate order to run them in such that all update dependencies are met.
* Any updates whose dependencies cannot be met are included in the returned
* array but have the key 'allowed' set to FALSE; the calling function should
* take responsibility for ensuring that these updates are ultimately not
* performed.
*
* In addition, the returned array also includes detailed information about the
* dependency chain for each update, as provided by the depth-first search
* algorithm in Drupal\Component\Graph\Graph::searchAndSort().
*
* @param $starting_updates
* An array whose keys contain the names of modules with updates to be run
* and whose values contain the number of the first requested update for that
* module.
*
* @return
* An array whose keys are the names of all update functions within the
* provided modules that would need to be run in order to fulfill the
* request, arranged in the order in which the update functions should be
* run. (This includes the provided starting update for each module and all
* subsequent updates that are available.) The values are themselves arrays
* containing all the keys provided by the
* Drupal\Component\Graph\Graph::searchAndSort() algorithm, which encode
* detailed information about the dependency chain for this update function
* (for example: 'paths', 'reverse_paths', 'weight', and 'component'), as
* well as the following additional keys:
* - 'allowed': A boolean which is TRUE when the update function's
* dependencies are met, and FALSE otherwise. Calling functions should
* inspect this value before running the update.
* - 'missing_dependencies': An array containing the names of any other
* update functions that are required by this one but that are unavailable
* to be run. This array will be empty when 'allowed' is TRUE.
* - 'module': The name of the module that this update function belongs to.
* - 'number': The number of this update function within that module.
*
* @see \Drupal\Component\Graph\Graph::searchAndSort()
*/
function update_resolve_dependencies($starting_updates) {
// Obtain a dependency graph for the requested update functions.
$update_functions = update_get_update_function_list($starting_updates);
$graph = update_build_dependency_graph($update_functions);
// Perform the depth-first search and sort on the results.
$graph_object = new Graph($graph);
$graph = $graph_object
->searchAndSort();
uasort($graph, array(
'Drupal\\Component\\Utility\\SortArray',
'sortByWeightElement',
));
foreach ($graph as $function => &$data) {
$module = $data['module'];
$number = $data['number'];
// If the update function is missing and has not yet been performed, mark
// it and everything that ultimately depends on it as disallowed.
if (update_is_missing($module, $number, $update_functions) && !update_already_performed($module, $number)) {
$data['allowed'] = FALSE;
foreach (array_keys($data['paths']) as $dependent) {
$graph[$dependent]['allowed'] = FALSE;
$graph[$dependent]['missing_dependencies'][] = $function;
}
}
elseif (!isset($data['allowed'])) {
$data['allowed'] = TRUE;
$data['missing_dependencies'] = array();
}
// Now that we have finished processing this function, remove it from the
// graph if it was not part of the original list. This ensures that we
// never try to run any updates that were not specifically requested.
if (!isset($update_functions[$module][$number])) {
unset($graph[$function]);
}
}
return $graph;
}
/**
* Returns an organized list of update functions for a set of modules.
*
* @param $starting_updates
* An array whose keys contain the names of modules and whose values contain
* the number of the first requested update for that module.
*
* @return
* An array containing all the update functions that should be run for each
* module, including the provided starting update and all subsequent updates
* that are available. The keys of the array contain the module names, and
* each value is an ordered array of update functions, keyed by the update
* number.
*
* @see update_resolve_dependencies()
*/
function update_get_update_function_list($starting_updates) {
// Go through each module and find all updates that we need (including the
// first update that was requested and any updates that run after it).
$update_functions = array();
foreach ($starting_updates as $module => $version) {
$update_functions[$module] = array();
$updates = drupal_get_schema_versions($module);
if ($updates !== FALSE) {
$max_version = max($updates);
if ($version <= $max_version) {
foreach ($updates as $update) {
if ($update >= $version) {
$update_functions[$module][$update] = $module . '_update_' . $update;
}
}
}
}
}
return $update_functions;
}
/**
* Constructs a graph which encodes the dependencies between module updates.
*
* This function returns an associative array which contains a "directed graph"
* representation of the dependencies between a provided list of update
* functions, as well as any outside update functions that they directly depend
* on but that were not in the provided list. The vertices of the graph
* represent the update functions themselves, and each edge represents a
* requirement that the first update function needs to run before the second.
* For example, consider this graph:
*
* system_update_8001 ---> system_update_8002 ---> system_update_8003
*
* Visually, this indicates that system_update_8001() must run before
* system_update_8002(), which in turn must run before system_update_8003().
*
* The function takes into account standard dependencies within each module, as
* shown above (i.e., the fact that each module's updates must run in numerical
* order), but also finds any cross-module dependencies that are defined by
* modules which implement hook_update_dependencies(), and builds them into the
* graph as well.
*
* @param $update_functions
* An organized array of update functions, in the format returned by
* update_get_update_function_list().
*
* @return
* A multidimensional array representing the dependency graph, suitable for
* passing in to Drupal\Component\Graph\Graph::searchAndSort(), but with extra
* information about each update function also included. Each array key
* contains the name of an update function, including all update functions
* from the provided list as well as any outside update functions which they
* directly depend on. Each value is an associative array containing the
* following keys:
* - 'edges': A representation of any other update functions that immediately
* depend on this one. See Drupal\Component\Graph\Graph::searchAndSort() for
* more details on the format.
* - 'module': The name of the module that this update function belongs to.
* - 'number': The number of this update function within that module.
*
* @see \Drupal\Component\Graph\Graph::searchAndSort()
* @see update_resolve_dependencies()
*/
function update_build_dependency_graph($update_functions) {
// Initialize an array that will define a directed graph representing the
// dependencies between update functions.
$graph = array();
// Go through each update function and build an initial list of dependencies.
foreach ($update_functions as $module => $functions) {
$previous_function = NULL;
foreach ($functions as $number => $function) {
// Add an edge to the directed graph representing the fact that each
// update function in a given module must run after the update that
// numerically precedes it.
if ($previous_function) {
$graph[$previous_function]['edges'][$function] = TRUE;
}
$previous_function = $function;
// Define the module and update number associated with this function.
$graph[$function]['module'] = $module;
$graph[$function]['number'] = $number;
}
}
// Now add any explicit update dependencies declared by modules.
$update_dependencies = update_retrieve_dependencies();
foreach ($graph as $function => $data) {
if (!empty($update_dependencies[$data['module']][$data['number']])) {
foreach ($update_dependencies[$data['module']][$data['number']] as $module => $number) {
$dependency = $module . '_update_' . $number;
$graph[$dependency]['edges'][$function] = TRUE;
$graph[$dependency]['module'] = $module;
$graph[$dependency]['number'] = $number;
}
}
}
return $graph;
}
/**
* Determines if a module update is missing or unavailable.
*
* @param $module
* The name of the module.
* @param $number
* The number of the update within that module.
* @param $update_functions
* An organized array of update functions, in the format returned by
* update_get_update_function_list(). This should represent all module
* updates that are requested to run at the time this function is called.
*
* @return
* TRUE if the provided module update is not installed or is not in the
* provided list of updates to run; FALSE otherwise.
*/
function update_is_missing($module, $number, $update_functions) {
return !isset($update_functions[$module][$number]) || !function_exists($update_functions[$module][$number]);
}
/**
* Determines if a module update has already been performed.
*
* @param $module
* The name of the module.
* @param $number
* The number of the update within that module.
*
* @return
* TRUE if the database schema indicates that the update has already been
* performed; FALSE otherwise.
*/
function update_already_performed($module, $number) {
return $number <= drupal_get_installed_schema_version($module);
}
/**
* Invokes hook_update_dependencies() in all installed modules.
*
* This function is similar to \Drupal::moduleHandler()->invokeAll(), with the
* main difference that it does not require that a module be enabled to invoke
* its hook, only that it be installed. This allows the update system to
* properly perform updates even on modules that are currently disabled.
*
* @return
* An array of return values obtained by merging the results of the
* hook_update_dependencies() implementations in all installed modules.
*
* @see \Drupal::moduleHandler()->invokeAll()
* @see hook_update_dependencies()
*/
function update_retrieve_dependencies() {
$return = array();
// Get a list of installed modules, arranged so that we invoke their hooks in
// the same order that \Drupal::moduleHandler()->invokeAll() does.
foreach (\Drupal::keyValue('system.schema')
->getAll() as $module => $schema) {
if ($schema == SCHEMA_UNINSTALLED) {
// Nothing to upgrade.
continue;
}
$function = $module . '_update_dependencies';
// Ensure install file is loaded.
module_load_install($module);
if (function_exists($function)) {
$updated_dependencies = $function();
// Each implementation of hook_update_dependencies() returns a
// multidimensional, associative array containing some keys that
// represent module names (which are strings) and other keys that
// represent update function numbers (which are integers). We cannot use
// array_merge_recursive() to properly merge these results, since it
// treats strings and integers differently. Therefore, we have to
// explicitly loop through the expected array structure here and perform
// the merge manually.
if (isset($updated_dependencies) && is_array($updated_dependencies)) {
foreach ($updated_dependencies as $module_name => $module_data) {
foreach ($module_data as $update_version => $update_data) {
foreach ($update_data as $module_dependency => $update_dependency) {
// If there are redundant dependencies declared for the same
// update function (so that it is declared to depend on more than
// one update from a particular module), record the dependency on
// the highest numbered update here, since that automatically
// implies the previous ones. For example, if one module's
// implementation of hook_update_dependencies() required this
// ordering:
//
// system_update_8002 ---> user_update_8001
//
// but another module's implementation of the hook required this
// one:
//
// system_update_8003 ---> user_update_8001
//
// we record the second one, since system_update_8002() is always
// guaranteed to run before system_update_8003() anyway (within
// an individual module, updates are always run in numerical
// order).
if (!isset($return[$module_name][$update_version][$module_dependency]) || $update_dependency > $return[$module_name][$update_version][$module_dependency]) {
$return[$module_name][$update_version][$module_dependency] = $update_dependency;
}
}
}
}
}
}
}
return $return;
}
/**
* Replace permissions during update.
*
* This function can replace one permission to several or even delete an old
* one.
*
* @param array $replace
* An associative array. The keys are the old permissions the values are lists
* of new permissions. If the list is an empty array, the old permission is
* removed.
*/
function update_replace_permissions($replace) {
$prefix = 'user.role.';
$cut = strlen($prefix);
$role_names = \Drupal::service('config.storage')
->listAll($prefix);
foreach ($role_names as $role_name) {
$rid = substr($role_name, $cut);
$config = \Drupal::config("user.role.{$rid}");
$permissions = $config
->get('permissions') ?: array();
foreach ($replace as $old_permission => $new_permissions) {
if (($index = array_search($old_permission, $permissions)) !== FALSE) {
unset($permissions[$index]);
$permissions = array_unique(array_merge($permissions, $new_permissions));
}
}
$config
->set('permissions', $permissions)
->save();
}
}
/**
* Returns a list of languages set up on the site during upgrades.
*
* @param $flags
* (optional) Specifies the state of the languages that have to be returned.
* It can be: LanguageInterface::STATE_CONFIGURABLE,
* LanguageInterface::STATE_LOCKED, or LanguageInterface::STATE_ALL.
*
* @return \Drupal\Core\Language\LanguageInterface[]
* An associative array of languages, keyed by the language code, ordered by
* weight ascending and name ascending.
*/
function update_language_list($flags = LanguageInterface::STATE_CONFIGURABLE) {
$languages =& drupal_static(__FUNCTION__);
// Initialize master language list.
if (!isset($languages)) {
// Initialize local language list cache.
$languages = array();
// Fill in master language list based on current configuration.
$default = \Drupal::languageManager()
->getDefaultLanguage();
if (\Drupal::languageManager()
->isMultilingual() || \Drupal::moduleHandler()
->moduleExists('language')) {
// Use language module configuration if available. We can not use
// entity_load_multiple() because this breaks during updates.
$language_entities = \Drupal::configFactory()
->listAll('language.entity.');
// Initialize default property so callers have an easy reference and can
// save the same object without data loss.
foreach ($language_entities as $langcode_config_name) {
$langcode = substr($langcode_config_name, strlen('language.entity.'));
$info = \Drupal::config($langcode_config_name)
->get();
$languages[$langcode] = new Language(array(
'default' => $info['id'] == $default
->getId(),
'name' => $info['label'],
'id' => $info['id'],
'direction' => $info['direction'],
'locked' => $info['locked'],
'weight' => $info['weight'],
));
}
Language::sort($languages);
}
else {
// No language module, so use the default language only.
$languages = array(
$default
->getId() => $default,
);
// Add the special languages, they will be filtered later if needed.
$languages += \Drupal::languageManager()
->getDefaultLockedLanguages($default
->getWeight());
}
}
// Filter the full list of languages based on the value of the $all flag. By
// default we remove the locked languages, but the caller may request for
// those languages to be added as well.
$filtered_languages = array();
// Add the site's default language if flagged as allowed value.
if ($flags & LanguageInterface::STATE_SITE_DEFAULT) {
$default = \Drupal::languageManager()
->getDefaultLanguage();
// Rename the default language.
$default
->setName(t("Site's default language (@lang_name)", array(
'@lang_name' => $default
->getName(),
)));
$filtered_languages[LanguageInterface::LANGCODE_SITE_DEFAULT] = $default;
}
foreach ($languages as $langcode => $language) {
if ($language
->isLocked() && !($flags & LanguageInterface::STATE_LOCKED) || !$language
->isLocked() && !($flags & LanguageInterface::STATE_CONFIGURABLE)) {
continue;
}
$filtered_languages[$langcode] = $language;
}
return $filtered_languages;
}Functions
Name |
Description |
|---|---|
| update_already_performed | Determines if a module update has already been performed. |
| update_build_dependency_graph | Constructs a graph which encodes the dependencies between module updates. |
| update_check_incompatibility | Tests the compatibility of a module or theme. |
| update_check_requirements | Checks update requirements and reports errors and (optionally) warnings. |
| update_do_one | Implements callback_batch_operation(). |
| update_fix_compatibility | Disables any extensions that are incompatible with the current core version. |
| update_get_update_function_list | Returns an organized list of update functions for a set of modules. |
| update_get_update_list | Returns a list of all the pending database updates. |
| update_invoke_post_update | Executes a single hook_post_update_NAME(). |
| update_is_missing | Determines if a module update is missing or unavailable. |
| update_language_list | Returns a list of languages set up on the site during upgrades. |
| update_replace_permissions | Replace permissions during update. |
| update_resolve_dependencies | Resolves dependencies in a set of module updates, and orders them correctly. |
| update_retrieve_dependencies | Invokes hook_update_dependencies() in all installed modules. |
| update_set_schema | Forces a module to a given schema version. |
| update_system_schema_requirements | Returns whether the minimum schema requirement has been satisfied. |