1 system.admin.inc system_modules($form, $form_state = array())

Menu callback; provides module enable/disable interface.

The list of modules gets populated by module.info files, which contain each module's name, description, and information about which modules it requires. See backdrop_parse_info_file() for information on module.info descriptors.

Dependency checking is performed to ensure that a module:

  • can not be enabled if there are disabled modules it requires.
  • can not be disabled if there are enabled modules which depend on it.

Parameters

$form_state: An associative array containing the current state of the form.

Return value

The form array.

See also

theme_system_modules()

system_modules_submit()

Related topics

File

core/modules/system/system.admin.inc, line 483
Admin page callbacks for the system module.

Code

function system_modules($form, $form_state = array()) {
  backdrop_set_title('Modules');

  // JS-only table filters.
  $form['filter'] = array(
    '#type' => 'container',
    '#attributes' => array(
      'class' => array('table-filter', 'js-show'),
    ),
    '#attached' => array(
      'library' => array(array('system', 'backdrop.modules')),
    ),
  );
  $form['filter']['search'] = array(
    '#type' => 'textfield',
    '#title' => t('Filter'),
    '#size' => 30,
    '#placeholder' => t('Search...'),
    '#attributes' => array(
      'class' => array('table-filter-text'),
      'autocomplete' => 'off',
      'title' => t('Enter a part of the module name or description to filter.'),
    ),
    '#default_value' => (isset($_GET['search'])) ? $_GET['search'] : '',
  );

  // Get current list of modules.
  $files = system_rebuild_module_data();

  $visible_files = $files;
  foreach ($visible_files as $filename => $file) {
    // Remove hidden modules from the modules list.
    if (!empty($file->info['hidden'])) {
      unset($visible_files[$filename]);
    }
  }

  uasort($visible_files, 'system_sort_modules_by_info_name');

  // If the modules form was submitted, then system_modules_submit() runs first
  // and if there are unfilled required modules, then $form_state['storage'] is
  // filled, triggering a rebuild. In this case we need to display a
  // confirmation form.
  if (!empty($form_state['storage'])) {
    return system_modules_confirm_form($visible_files, $form_state['storage']);
  }

  $modules = array();
  $form['modules'] = array('#tree' => TRUE);

  // Used when displaying modules that are required by the installation profile.
  require_once BACKDROP_ROOT . '/core/includes/install.inc';
  $distribution_name = check_plain(backdrop_install_profile_distribution_name());

  // Iterate through each of the modules.
  foreach ($visible_files as $filename => $module) {
    $extra = array();
    $extra['enabled'] = (bool) $module->status;
    $extra['disabled'] = (array_key_exists('disabled', $module->info)) ? $module->info['disabled'] : FALSE;
    if ($extra['disabled'] && !empty($module->info['explanation'])) {
      $extra['required_by'][] = $module->info['explanation'];
    }

    // Check to see if this is a core module.
    if (strstr($module->uri, 'core/modules')) {
      $extra['core'] = TRUE;
    }

    // Some modules are always required by core and cannot be disabled, for
    // example: entity, node, system, and user.
    $extra['required_by_distribution'] = FALSE;
    if (!empty($module->info['required'])) {
      $extra['disabled'] = TRUE;
      $extra['required_by'][] = $distribution_name . (!empty($module->info['explanation']) ? ' (' . $module->info['explanation'] . ')' : '');
      $extra['required_by_distribution'] = TRUE;
    }

    // If this module requires other modules, add them to the array.
    foreach ($module->requires as $requires => $v) {
      if (!isset($files[$requires])) {
        $extra['requires'][$requires] = t('@module (<span class="admin-missing">missing</span>)', array('@module' => backdrop_ucfirst($requires)));
        $extra['disabled'] = TRUE;
      }
      // Only display visible modules.
      elseif (isset($visible_files[$requires])) {
        $requires_name = $files[$requires]->info['name'];

        // Disable this module if it is incompatible with the dependency's version.
        $version_string = preg_replace('/^' . preg_quote(BACKDROP_CORE_COMPATIBILITY, '/') . '-/', '', $files[$requires]->info['version']);
        if ($incompatible_version = backdrop_check_incompatibility($v, $version_string)) {
          $extra['requires'][$requires] = t('@module (<span class="admin-missing">incompatible with</span> version @version)', array(
            '@module' => $requires_name . ' ' . $incompatible_version,
            '@version' => $version_string,
          ));
          $extra['disabled'] = TRUE;
        }

        // Disable this module if the dependency is incompatible with this version of Backdrop core.
        elseif (isset($files[$requires]->info['backdrop']) && $files[$requires]->info['backdrop'] != BACKDROP_CORE_COMPATIBILITY) {
          $extra['requires'][$requires] = t('@module (<span class="admin-missing">incompatible with</span> this version of Backdrop core)', array(
            '@module' => $requires_name,
          ));
          $extra['disabled'] = TRUE;
        }
        elseif ($files[$requires]->status) {
          $extra['requires'][$requires] = t('@module (<span class="admin-enabled">enabled</span>)', array('@module' => $requires_name));
        }
        else {
          $extra['requires'][$requires] = t('@module (<span class="admin-disabled">disabled</span>)', array('@module' => $requires_name));
        }
      }
    }

    // Generate link for module's permission, if the user has access to it.
    if ($module->status && user_access('administer permissions') && in_array($filename, module_implements('permission'))) {
      $extra['links']['permissions'] = array(
        'title' => t('Permissions'),
        'href' => 'admin/config/people/permissions',
        'attributes' => array('class' => array('module-link', 'module-link-permissions'), 'title' => t('Configure permissions')),
        'fragment' => 'module-' . $filename,
      );
    }

    // Generate link for module's configuration page, if provided.
    if ($module->status && isset($module->info['configure'])) {
      $configure_link = menu_get_item($module->info['configure']);
      if ($configure_link['access']) {
        $extra['links']['configure'] = array(
          'title' => t('Configure'),
          'href' => $configure_link['href'],
          'attributes' => array('class' => array('module-link', 'module-link-configure'), 'title' => $configure_link['description']),
        );
      }
    }

    // If this module is required by other modules, list those, and then make it
    // impossible to disable this one.
    foreach ($module->required_by as $required_by => $v) {
      // Hidden modules are unset already.
      if (isset($visible_files[$required_by])) {
        if ($files[$required_by]->status == 1 && $module->status == 1) {
          $extra['required_by'][] = t('@module (<span class="admin-enabled">enabled</span>)', array('@module' => $files[$required_by]->info['name']));
          $extra['disabled'] = TRUE;
        }
        else {
          $extra['required_by'][] = t('@module (<span class="admin-disabled">disabled</span>)', array('@module' => $files[$required_by]->info['name']));
        }
      }
    }
    $form['modules'][$module->info['package']][$filename] = _system_modules_build_row($module->info, $extra);
  }

  // Add basic information to the fieldsets.
  foreach (element_children($form['modules']) as $package) {
    $form['modules'][$package] += array(
      '#type' => 'fieldset',
      '#title' => t($package),
      '#collapsible' => TRUE,
      '#theme' => 'system_modules_fieldset',
      '#header' => array(
        array('class' => array('checkbox')),
        t('Name'),
        array('data' => t('Version'), 'class' => array(RESPONSIVE_PRIORITY_MEDIUM)),
        array('data' => t('Description'), 'class' => array(RESPONSIVE_PRIORITY_LOW)),
        array('data' => t('Operations')),
      ),
    );
  }

  $form['actions'] = array('#type' => 'actions');
  $form['actions']['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save configuration'),
  );
  $form['#action'] = url('admin/modules/list/confirm');

  return $form;
}