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Current File : /var/www/web032/htdocs/cms/administrator/components/com_modules/models/module.php
<?php
/**
 * @package     Joomla.Administrator
 * @subpackage  com_modules
 *
 * @copyright   (C) 2007 Open Source Matters, Inc. <https://www.joomla.org>
 * @license     GNU General Public License version 2 or later; see LICENSE.txt
 */

defined('_JEXEC') or die;

use Joomla\Registry\Registry;
use Joomla\String\StringHelper;
use Joomla\Utilities\ArrayHelper;

/**
 * Module model.
 *
 * @since  1.6
 */
class ModulesModelModule extends JModelAdmin
{
	/**
	 * The type alias for this content type.
	 *
	 * @var      string
	 * @since    3.4
	 */
	public $typeAlias = 'com_modules.module';

	/**
	 * @var    string  The prefix to use with controller messages.
	 * @since  1.6
	 */
	protected $text_prefix = 'COM_MODULES';

	/**
	 * @var    string  The help screen key for the module.
	 * @since  1.6
	 */
	protected $helpKey = 'JHELP_EXTENSIONS_MODULE_MANAGER_EDIT';

	/**
	 * @var    string  The help screen base URL for the module.
	 * @since  1.6
	 */
	protected $helpURL;

	/**
	 * Batch copy/move command. If set to false,
	 * the batch copy/move command is not supported
	 *
	 * @var string
	 */
	protected $batch_copymove = 'position_id';

	/**
	 * Allowed batch commands
	 *
	 * @var array
	 */
	protected $batch_commands = array(
		'assetgroup_id' => 'batchAccess',
		'language_id' => 'batchLanguage',
	);

	/**
	 * Constructor.
	 *
	 * @param   array  $config  An optional associative array of configuration settings.
	 */
	public function __construct($config = array())
	{
		$config = array_merge(
			array(
				'event_after_delete'  => 'onExtensionAfterDelete',
				'event_after_save'    => 'onExtensionAfterSave',
				'event_before_delete' => 'onExtensionBeforeDelete',
				'event_before_save'   => 'onExtensionBeforeSave',
				'events_map'          => array(
					'save'   => 'extension',
					'delete' => 'extension'
				)
			), $config
		);

		parent::__construct($config);
	}

	/**
	 * Method to auto-populate the model state.
	 *
	 * Note. Calling getState in this method will result in recursion.
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function populateState()
	{
		$app = JFactory::getApplication('administrator');

		// Load the User state.
		$pk = $app->input->getInt('id');

		if (!$pk)
		{
			if ($extensionId = (int) $app->getUserState('com_modules.add.module.extension_id'))
			{
				$this->setState('extension.id', $extensionId);
			}
		}

		$this->setState('module.id', $pk);

		// Load the parameters.
		$params = JComponentHelper::getParams('com_modules');
		$this->setState('params', $params);
	}

	/**
	 * Batch copy modules to a new position or current.
	 *
	 * @param   integer  $value     The new value matching a module position.
	 * @param   array    $pks       An array of row IDs.
	 * @param   array    $contexts  An array of item contexts.
	 *
	 * @return  boolean  True if successful, false otherwise and internal error is set.
	 *
	 * @since   2.5
	 */
	protected function batchCopy($value, $pks, $contexts)
	{
		// Set the variables
		$user = JFactory::getUser();
		$table = $this->getTable();
		$newIds = array();

		foreach ($pks as $pk)
		{
			if ($user->authorise('core.create', 'com_modules'))
			{
				$table->reset();
				$table->load($pk);

				// Set the new position
				if ($value == 'noposition')
				{
					$position = '';
				}
				elseif ($value == 'nochange')
				{
					$position = $table->position;
				}
				else
				{
					$position = $value;
				}

				$table->position = $position;

				// Copy of the Asset ID
				$oldAssetId = $table->asset_id;

				// Alter the title if necessary
				$data = $this->generateNewTitle(0, $table->title, $table->position);
				$table->title = $data['0'];

				// Reset the ID because we are making a copy
				$table->id = 0;

				// Unpublish the new module
				$table->published = 0;

				if (!$table->store())
				{
					$this->setError($table->getError());

					return false;
				}

				// Get the new item ID
				$newId = $table->get('id');

				// Add the new ID to the array
				$newIds[$pk] = $newId;

				// Now we need to handle the module assignments
				$db = $this->getDbo();
				$query = $db->getQuery(true)
					->select($db->quoteName('menuid'))
					->from($db->quoteName('#__modules_menu'))
					->where($db->quoteName('moduleid') . ' = ' . $pk);
				$db->setQuery($query);
				$menus = $db->loadColumn();

				// Insert the new records into the table
				foreach ($menus as $menu)
				{
					$query->clear()
						->insert($db->quoteName('#__modules_menu'))
						->columns(array($db->quoteName('moduleid'), $db->quoteName('menuid')))
						->values($newId . ', ' . $menu);
					$db->setQuery($query);
					$db->execute();
				}

				// Copy rules
				$query->clear()
					->update($db->quoteName('#__assets', 't'))
					->join('INNER', $db->quoteName('#__assets', 's') .
						' ON ' . $db->quoteName('s.id') . ' = ' . $oldAssetId
					)
					->set($db->quoteName('t.rules') . ' = ' . $db->quoteName('s.rules'))
					->where($db->quoteName('t.id') . ' = ' . $table->asset_id);

				$db->setQuery($query)->execute();
			}
			else
			{
				$this->setError(JText::_('JLIB_APPLICATION_ERROR_BATCH_CANNOT_CREATE'));

				return false;
			}
		}

		// Clean the cache
		$this->cleanCache();

		return $newIds;
	}

	/**
	 * Batch move modules to a new position or current.
	 *
	 * @param   integer  $value     The new value matching a module position.
	 * @param   array    $pks       An array of row IDs.
	 * @param   array    $contexts  An array of item contexts.
	 *
	 * @return  boolean  True if successful, false otherwise and internal error is set.
	 *
	 * @since   2.5
	 */
	protected function batchMove($value, $pks, $contexts)
	{
		// Set the variables
		$user = JFactory::getUser();
		$table = $this->getTable();

		foreach ($pks as $pk)
		{
			if ($user->authorise('core.edit', 'com_modules'))
			{
				$table->reset();
				$table->load($pk);

				// Set the new position
				if ($value == 'noposition')
				{
					$position = '';
				}
				elseif ($value == 'nochange')
				{
					$position = $table->position;
				}
				else
				{
					$position = $value;
				}

				$table->position = $position;

				if (!$table->store())
				{
					$this->setError($table->getError());

					return false;
				}
			}
			else
			{
				$this->setError(JText::_('JLIB_APPLICATION_ERROR_BATCH_CANNOT_EDIT'));

				return false;
			}
		}

		// Clean the cache
		$this->cleanCache();

		return true;
	}

	/**
	 * Method to test whether a record can have its state edited.
	 *
	 * @param   object  $record  A record object.
	 *
	 * @return  boolean  True if allowed to change the state of the record. Defaults to the permission set in the component.
	 *
	 * @since   3.2
	 */
	protected function canEditState($record)
	{
		// Check for existing module.
		if (!empty($record->id))
		{
			return JFactory::getUser()->authorise('core.edit.state', 'com_modules.module.' . (int) $record->id);
		}

		// Default to component settings if module not known.
		return parent::canEditState($record);
	}

	/**
	 * Method to delete rows.
	 *
	 * @param   array  &$pks  An array of item ids.
	 *
	 * @return  boolean  Returns true on success, false on failure.
	 *
	 * @since   1.6
	 * @throws  Exception
	 */
	public function delete(&$pks)
	{
		$dispatcher = JEventDispatcher::getInstance();
		$pks        = (array) $pks;
		$user       = JFactory::getUser();
		$table      = $this->getTable();
		$context    = $this->option . '.' . $this->name;

		// Include the plugins for the on delete events.
		JPluginHelper::importPlugin($this->events_map['delete']);

		// Iterate the items to delete each one.
		foreach ($pks as $pk)
		{
			if ($table->load($pk))
			{
				// Access checks.
				if (!$user->authorise('core.delete', 'com_modules.module.' . (int) $pk) || $table->published != -2)
				{
					JError::raiseWarning(403, JText::_('JERROR_CORE_DELETE_NOT_PERMITTED'));

					return;
				}

				// Trigger the before delete event.
				$result = $dispatcher->trigger($this->event_before_delete, array($context, $table));

				if (in_array(false, $result, true) || !$table->delete($pk))
				{
					throw new Exception($table->getError());
				}
				else
				{
					// Delete the menu assignments
					$db    = $this->getDbo();
					$query = $db->getQuery(true)
						->delete('#__modules_menu')
						->where('moduleid=' . (int) $pk);
					$db->setQuery($query);
					$db->execute();

					// Trigger the after delete event.
					$dispatcher->trigger($this->event_after_delete, array($context, $table));
				}

				// Clear module cache
				parent::cleanCache($table->module, $table->client_id);
			}
			else
			{
				throw new Exception($table->getError());
			}
		}

		// Clear modules cache
		$this->cleanCache();

		return true;
	}

	/**
	 * Method to duplicate modules.
	 *
	 * @param   array  &$pks  An array of primary key IDs.
	 *
	 * @return  boolean|JException  Boolean true on success, JException instance on error
	 *
	 * @since   1.6
	 * @throws  Exception
	 */
	public function duplicate(&$pks)
	{
		$user = JFactory::getUser();
		$db   = $this->getDbo();

		// Access checks.
		if (!$user->authorise('core.create', 'com_modules'))
		{
			throw new Exception(JText::_('JERROR_CORE_CREATE_NOT_PERMITTED'));
		}

		$table = $this->getTable();

		foreach ($pks as $pk)
		{
			if ($table->load($pk, true))
			{
				// Reset the id to create a new record.
				$table->id = 0;

				// Alter the title.
				$m = null;

				if (preg_match('#\((\d+)\)$#', $table->title, $m))
				{
					$table->title = preg_replace('#\(\d+\)$#', '(' . ($m[1] + 1) . ')', $table->title);
				}

				$data = $this->generateNewTitle(0, $table->title, $table->position);
				$table->title = $data[0];

				// Unpublish duplicate module
				$table->published = 0;

				if (!$table->check() || !$table->store())
				{
					throw new Exception($table->getError());
				}

				$query = $db->getQuery(true)
					->select($db->quoteName('menuid'))
					->from($db->quoteName('#__modules_menu'))
					->where($db->quoteName('moduleid') . ' = ' . (int) $pk);

				$db->setQuery($query);
				$rows = $db->loadColumn();

				foreach ($rows as $menuid)
				{
					$tuples[] = (int) $table->id . ',' . (int) $menuid;
				}
			}
			else
			{
				throw new Exception($table->getError());
			}
		}

		if (!empty($tuples))
		{
			// Module-Menu Mapping: Do it in one query
			$query = $db->getQuery(true)
				->insert($db->quoteName('#__modules_menu'))
				->columns($db->quoteName(array('moduleid', 'menuid')))
				->values($tuples);

			$db->setQuery($query);

			try
			{
				$db->execute();
			}
			catch (RuntimeException $e)
			{
				return JError::raiseWarning(500, $e->getMessage());
			}
		}

		// Clear modules cache
		$this->cleanCache();

		return true;
	}

	/**
	 * Method to change the title.
	 *
	 * @param   integer  $categoryId  The id of the category. Not used here.
	 * @param   string   $title       The title.
	 * @param   string   $position    The position.
	 *
	 * @return  array  Contains the modified title.
	 *
	 * @since   2.5
	 */
	protected function generateNewTitle($categoryId, $title, $position)
	{
		// Alter the title & alias
		$table = $this->getTable();

		while ($table->load(array('position' => $position, 'title' => $title)))
		{
			$title = StringHelper::increment($title);
		}

		return array($title);
	}

	/**
	 * Method to get the client object
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	public function &getClient()
	{
		return $this->_client;
	}

	/**
	 * Method to get the record form.
	 *
	 * @param   array    $data      Data for the form.
	 * @param   boolean  $loadData  True if the form is to load its own data (default case), false if not.
	 *
	 * @return  JForm  A JForm object on success, false on failure
	 *
	 * @since   1.6
	 */
	public function getForm($data = array(), $loadData = true)
	{
		// The folder and element vars are passed when saving the form.
		if (empty($data))
		{
			$item     = $this->getItem();
			$clientId = $item->client_id;
			$module   = $item->module;
			$id       = $item->id;
		}
		else
		{
			$clientId = ArrayHelper::getValue($data, 'client_id');
			$module   = ArrayHelper::getValue($data, 'module');
			$id       = ArrayHelper::getValue($data, 'id');
		}

		// Add the default fields directory
		$baseFolder = $clientId ? JPATH_ADMINISTRATOR : JPATH_SITE;
		JForm::addFieldPath($baseFolder . '/modules' . '/' . $module . '/field');

		// These variables are used to add data from the plugin XML files.
		$this->setState('item.client_id', $clientId);
		$this->setState('item.module', $module);

		// Get the form.
		if ($clientId == 1)
		{
			$form = $this->loadForm('com_modules.module.admin', 'moduleadmin', array('control' => 'jform', 'load_data' => $loadData), true);

			// Display language field to filter admin custom menus per language
			if (!JModuleHelper::isAdminMultilang())
			{
				$form->setFieldAttribute('language', 'type', 'hidden');
			}
		}
		else
		{
			$form = $this->loadForm('com_modules.module', 'module', array('control' => 'jform', 'load_data' => $loadData), true);
		}

		if (empty($form))
		{
			return false;
		}

		$form->setFieldAttribute('position', 'client', $this->getState('item.client_id') == 0 ? 'site' : 'administrator');

		$user = JFactory::getUser();

		/**
		 * Check for existing module
		 * Modify the form based on Edit State access controls.
		 */
		if ($id != 0 && (!$user->authorise('core.edit.state', 'com_modules.module.' . (int) $id))
			|| ($id == 0 && !$user->authorise('core.edit.state', 'com_modules'))		)
		{
			// Disable fields for display.
			$form->setFieldAttribute('ordering', 'disabled', 'true');
			$form->setFieldAttribute('published', 'disabled', 'true');
			$form->setFieldAttribute('publish_up', 'disabled', 'true');
			$form->setFieldAttribute('publish_down', 'disabled', 'true');

			// Disable fields while saving.
			// The controller has already verified this is a record you can edit.
			$form->setFieldAttribute('ordering', 'filter', 'unset');
			$form->setFieldAttribute('published', 'filter', 'unset');
			$form->setFieldAttribute('publish_up', 'filter', 'unset');
			$form->setFieldAttribute('publish_down', 'filter', 'unset');
		}

		return $form;
	}

	/**
	 * Method to get the data that should be injected in the form.
	 *
	 * @return  mixed  The data for the form.
	 *
	 * @since   1.6
	 */
	protected function loadFormData()
	{
		$app = JFactory::getApplication();

		// Check the session for previously entered form data.
		$data = $app->getUserState('com_modules.edit.module.data', array());

		if (empty($data))
		{
			$data = $this->getItem();

			// Pre-select some filters (Status, Module Position, Language, Access Level) in edit form if those have been selected in Module Manager
			if (!$data->id)
			{
				$filters = (array) $app->getUserState('com_modules.modules.filter');
				$data->set('published', $app->input->getInt('published', ((isset($filters['state']) && $filters['state'] !== '') ? $filters['state'] : null)));
				$data->set('position', $app->input->getInt('position', (!empty($filters['position']) ? $filters['position'] : null)));
				$data->set('language', $app->input->getString('language', (!empty($filters['language']) ? $filters['language'] : null)));
				$data->set('access', $app->input->getInt('access', (!empty($filters['access']) ? $filters['access'] : JFactory::getConfig()->get('access'))));
			}

			// Avoid to delete params of a second module opened in a new browser tab while new one is not saved yet.
			if (empty($data->params))
			{
				// This allows us to inject parameter settings into a new module.
				$params = $app->getUserState('com_modules.add.module.params');

				if (is_array($params))
				{
					$data->set('params', $params);
				}
			}
		}

		$this->preprocessData('com_modules.module', $data);

		return $data;
	}

	/**
	 * Method to get a single record.
	 *
	 * @param   integer  $pk  The id of the primary key.
	 *
	 * @return  mixed  Object on success, false on failure.
	 *
	 * @since   1.6
	 */
	public function getItem($pk = null)
	{
		$pk = (!empty($pk)) ? (int) $pk : (int) $this->getState('module.id');
		$db = $this->getDbo();

		if (!isset($this->_cache[$pk]))
		{
			// Get a row instance.
			$table = $this->getTable();

			// Attempt to load the row.
			$return = $table->load($pk);

			// Check for a table object error.
			if ($return === false && $error = $table->getError())
			{
				$this->setError($error);

				return false;
			}

			// Check if we are creating a new extension.
			if (empty($pk))
			{
				if ($extensionId = (int) $this->getState('extension.id'))
				{
					$query = $db->getQuery(true)
						->select('element, client_id')
						->from('#__extensions')
						->where('extension_id = ' . $extensionId)
						->where('type = ' . $db->quote('module'));
					$db->setQuery($query);

					try
					{
						$extension = $db->loadObject();
					}
					catch (RuntimeException $e)
					{
						$this->setError($e->getMessage());

						return false;
					}

					if (empty($extension))
					{
						$this->setError('COM_MODULES_ERROR_CANNOT_FIND_MODULE');

						return false;
					}

					// Extension found, prime some module values.
					$table->module    = $extension->element;
					$table->client_id = $extension->client_id;
				}
				else
				{
					JFactory::getApplication()->redirect(JRoute::_('index.php?option=com_modules&view=modules', false));

					return false;
				}
			}

			// Convert to the JObject before adding other data.
			$properties        = $table->getProperties(1);
			$this->_cache[$pk] = ArrayHelper::toObject($properties, 'JObject');

			// Convert the params field to an array.
			$registry = new Registry($table->params);
			$this->_cache[$pk]->params = $registry->toArray();

			// Determine the page assignment mode.
			$query = $db->getQuery(true)
				->select($db->quoteName('menuid'))
				->from($db->quoteName('#__modules_menu'))
				->where($db->quoteName('moduleid') . ' = ' . (int) $pk);
			$db->setQuery($query);
			$assigned = $db->loadColumn();

			if (empty($pk))
			{
				// If this is a new module, assign to all pages.
				$assignment = 0;
			}
			elseif (empty($assigned))
			{
				// For an existing module it is assigned to none.
				$assignment = '-';
			}
			else
			{
				if ($assigned[0] > 0)
				{
					$assignment = 1;
				}
				elseif ($assigned[0] < 0)
				{
					$assignment = -1;
				}
				else
				{
					$assignment = 0;
				}
			}

			$this->_cache[$pk]->assigned   = $assigned;
			$this->_cache[$pk]->assignment = $assignment;

			// Get the module XML.
			$client = JApplicationHelper::getClientInfo($table->client_id);
			$path   = JPath::clean($client->path . '/modules/' . $table->module . '/' . $table->module . '.xml');

			if (file_exists($path))
			{
				$this->_cache[$pk]->xml = simplexml_load_file($path);
			}
			else
			{
				$this->_cache[$pk]->xml = null;
			}
		}

		return $this->_cache[$pk];
	}

	/**
	 * Get the necessary data to load an item help screen.
	 *
	 * @return  object  An object with key, url, and local properties for loading the item help screen.
	 *
	 * @since   1.6
	 */
	public function getHelp()
	{
		return (object) array('key' => $this->helpKey, 'url' => $this->helpURL);
	}

	/**
	 * Returns a reference to the a Table object, always creating it.
	 *
	 * @param   string  $type    The table type to instantiate
	 * @param   string  $prefix  A prefix for the table class name. Optional.
	 * @param   array   $config  Configuration array for model. Optional.
	 *
	 * @return  JTable  A database object
	 *
	 * @since   1.6
	 */
	public function getTable($type = 'Module', $prefix = 'JTable', $config = array())
	{
		return JTable::getInstance($type, $prefix, $config);
	}

	/**
	 * Prepare and sanitise the table prior to saving.
	 *
	 * @param   JTable  $table  The database object
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function prepareTable($table)
	{
		$table->title    = htmlspecialchars_decode($table->title, ENT_QUOTES);
		$table->position = trim($table->position);
	}

	/**
	 * Method to preprocess the form
	 *
	 * @param   JForm   $form   A form object.
	 * @param   mixed   $data   The data expected for the form.
	 * @param   string  $group  The name of the plugin group to import (defaults to "content").
	 *
	 * @return  void
	 *
	 * @since   1.6
	 * @throws  Exception if there is an error loading the form.
	 */
	protected function preprocessForm(JForm $form, $data, $group = 'content')
	{
		jimport('joomla.filesystem.path');

		$lang     = JFactory::getLanguage();
		$clientId = $this->getState('item.client_id');
		$module   = $this->getState('item.module');

		$client   = JApplicationHelper::getClientInfo($clientId);
		$formFile = JPath::clean($client->path . '/modules/' . $module . '/' . $module . '.xml');

		// Load the core and/or local language file(s).
		$lang->load($module, $client->path, null, false, true)
		||	$lang->load($module, $client->path . '/modules/' . $module, null, false, true);

		if (file_exists($formFile))
		{
			// Get the module form.
			if (!$form->loadFile($formFile, false, '//config'))
			{
				throw new Exception(JText::_('JERROR_LOADFILE_FAILED'));
			}

			// Attempt to load the xml file.
			if (!$xml = simplexml_load_file($formFile))
			{
				throw new Exception(JText::_('JERROR_LOADFILE_FAILED'));
			}

			// Get the help data from the XML file if present.
			$help = $xml->xpath('/extension/help');

			if (!empty($help))
			{
				$helpKey = trim((string) $help[0]['key']);
				$helpURL = trim((string) $help[0]['url']);

				$this->helpKey = $helpKey ?: $this->helpKey;
				$this->helpURL = $helpURL ?: $this->helpURL;
			}
		}

		// Load the default advanced params
		JForm::addFormPath(JPATH_ADMINISTRATOR . '/components/com_modules/models/forms');
		$form->loadFile('advanced', false);

		// Trigger the default form events.
		parent::preprocessForm($form, $data, $group);
	}

	/**
	 * Loads ContentHelper for filters before validating data.
	 *
	 * @param   object  $form   The form to validate against.
	 * @param   array   $data   The data to validate.
	 * @param   string  $group  The name of the group(defaults to null).
	 *
	 * @return  mixed  Array of filtered data if valid, false otherwise.
	 *
	 * @since   1.1
	 */
	public function validate($form, $data, $group = null)
	{
		JLoader::register('ContentHelper', JPATH_ADMINISTRATOR . '/components/com_content/helpers/content.php');

		if (!JFactory::getUser()->authorise('core.admin', 'com_modules'))
		{
			if (isset($data['rules']))
			{
				unset($data['rules']);
			}
		}

		return parent::validate($form, $data, $group);
	}

	/**
	 * Method to save the form data.
	 *
	 * @param   array  $data  The form data.
	 *
	 * @return  boolean  True on success.
	 *
	 * @since   1.6
	 */
	public function save($data)
	{
		$dispatcher = JEventDispatcher::getInstance();
		$input      = JFactory::getApplication()->input;
		$table      = $this->getTable();
		$pk         = (!empty($data['id'])) ? $data['id'] : (int) $this->getState('module.id');
		$isNew      = true;
		$context    = $this->option . '.' . $this->name;

		// Include the plugins for the save event.
		JPluginHelper::importPlugin($this->events_map['save']);

		// Load the row if saving an existing record.
		if ($pk > 0)
		{
			$table->load($pk);
			$isNew = false;
		}

		// Alter the title and published state for Save as Copy
		if ($input->get('task') == 'save2copy')
		{
			$orig_table = clone $this->getTable();
			$orig_table->load((int) $input->getInt('id'));
			$data['published'] = 0;

			if ($data['title'] == $orig_table->title)
			{
				$data['title'] = StringHelper::increment($data['title']);
			}
		}

		// Bind the data.
		if (!$table->bind($data))
		{
			$this->setError($table->getError());

			return false;
		}

		// Prepare the row for saving
		$this->prepareTable($table);

		// Check the data.
		if (!$table->check())
		{
			$this->setError($table->getError());

			return false;
		}

		// Trigger the before save event.
		$result = $dispatcher->trigger($this->event_before_save, array($context, &$table, $isNew));

		if (in_array(false, $result, true))
		{
			$this->setError($table->getError());

			return false;
		}

		// Store the data.
		if (!$table->store())
		{
			$this->setError($table->getError());

			return false;
		}

		// Process the menu link mappings.
		$assignment = isset($data['assignment']) ? $data['assignment'] : 0;

		// Delete old module to menu item associations
		$db    = $this->getDbo();
		$query = $db->getQuery(true)
			->delete('#__modules_menu')
			->where('moduleid = ' . (int) $table->id);
		$db->setQuery($query);

		try
		{
			$db->execute();
		}
		catch (RuntimeException $e)
		{
			$this->setError($e->getMessage());

			return false;
		}

		// If the assignment is numeric, then something is selected (otherwise it's none).
		if (is_numeric($assignment))
		{
			// Variable is numeric, but could be a string.
			$assignment = (int) $assignment;

			// Logic check: if no module excluded then convert to display on all.
			if ($assignment == -1 && empty($data['assigned']))
			{
				$assignment = 0;
			}

			// Check needed to stop a module being assigned to `All`
			// and other menu items resulting in a module being displayed twice.
			if ($assignment === 0)
			{
				// Assign new module to `all` menu item associations.
				$query->clear()
					->insert('#__modules_menu')
					->columns(array($db->quoteName('moduleid'), $db->quoteName('menuid')))
					->values((int) $table->id . ', 0');
				$db->setQuery($query);

				try
				{
					$db->execute();
				}
				catch (RuntimeException $e)
				{
					$this->setError($e->getMessage());

					return false;
				}
			}
			elseif (!empty($data['assigned']))
			{
				// Get the sign of the number.
				$sign = $assignment < 0 ? -1 : 1;

				$query->clear()
					->insert($db->quoteName('#__modules_menu'))
					->columns($db->quoteName(array('moduleid', 'menuid')));

				foreach ($data['assigned'] as &$pk)
				{
					$query->values((int) $table->id . ',' . (int) $pk * $sign);
				}

				$db->setQuery($query);

				try
				{
					$db->execute();
				}
				catch (RuntimeException $e)
				{
					$this->setError($e->getMessage());

					return false;
				}
			}
		}

		// Trigger the after save event.
		$dispatcher->trigger($this->event_after_save, array($context, &$table, $isNew));

		// Compute the extension id of this module in case the controller wants it.
		$query->clear()
			->select($db->quoteName('extension_id'))
			->from($db->quoteName('#__extensions', 'e'))
			->join(
				'LEFT',
				$db->quoteName('#__modules', 'm') . ' ON ' . $db->quoteName('e.client_id') . ' = ' . (int) $table->client_id .
				' AND ' . $db->quoteName('e.element') . ' = ' . $db->quoteName('m.module')
			)
			->where($db->quoteName('m.id') . ' = ' . (int) $table->id);
		$db->setQuery($query);

		try
		{
			$extensionId = $db->loadResult();
		}
		catch (RuntimeException $e)
		{
			JError::raiseWarning(500, $e->getMessage());

			return false;
		}

		$this->setState('module.extension_id', $extensionId);
		$this->setState('module.id', $table->id);

		// Clear modules cache
		$this->cleanCache();

		// Clean module cache
		parent::cleanCache($table->module, $table->client_id);

		return true;
	}

	/**
	 * A protected method to get a set of ordering conditions.
	 *
	 * @param   object  $table  A record object.
	 *
	 * @return  array  An array of conditions to add to add to ordering queries.
	 *
	 * @since   1.6
	 */
	protected function getReorderConditions($table)
	{
		$condition = array();
		$condition[] = 'client_id = ' . (int) $table->client_id;
		$condition[] = 'position = ' . $this->_db->quote($table->position);

		return $condition;
	}

	/**
	 * Custom clean cache method for different clients
	 *
	 * @param   string   $group     The name of the plugin group to import (defaults to null).
	 * @param   integer  $clientId  The client ID. [optional]
	 *
	 * @return  void
	 *
	 * @since   1.6
	 */
	protected function cleanCache($group = null, $clientId = 0)
	{
		parent::cleanCache('com_modules', $this->getClient());
	}
}

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