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parent::__construct($config); } /** * Method to checkin a row. * * @param integer $pk The numeric id of the primary key. * * @return boolean False on failure or error, true otherwise. * * @since 1.6 */ public function checkin($pk = null) { // Only attempt to check the row in if it exists. if ($pk) { $user = \JFactory::getUser(); // Get an instance of the row to checkin. $table = $this->getTable(); if (!$table->load($pk)) { $this->setError($table->getError()); return false; } $checkedOutField = $table->getColumnAlias('checked_out'); $checkedOutTimeField = $table->getColumnAlias('checked_out_time'); // If there is no checked_out or checked_out_time field, just return true. if (!property_exists($table, $checkedOutField) || !property_exists($table, $checkedOutTimeField)) { return true; } // Check if this is the user having previously checked out the row. if ($table->{$checkedOutField} > 0 && $table->{$checkedOutField} != $user->get('id') && !$user->authorise('core.admin', 'com_checkin')) { $this->setError(\JText::_('JLIB_APPLICATION_ERROR_CHECKIN_USER_MISMATCH')); return false; } // Attempt to check the row in. if (!$table->checkIn($pk)) { $this->setError($table->getError()); return false; } } return true; } /** * Method to check-out a row for editing. * * @param integer $pk The numeric id of the primary key. * * @return boolean False on failure or error, true otherwise. * * @since 1.6 */ public function checkout($pk = null) { // Only attempt to check the row in if it exists. if ($pk) { // Get an instance of the row to checkout. $table = $this->getTable(); if (!$table->load($pk)) { $this->setError($table->getError()); return false; } $checkedOutField = $table->getColumnAlias('checked_out'); $checkedOutTimeField = $table->getColumnAlias('checked_out_time'); // If there is no checked_out or checked_out_time field, just return true. if (!property_exists($table, $checkedOutField) || !property_exists($table, $checkedOutTimeField)) { return true; } $user = \JFactory::getUser(); // Check if this is the user having previously checked out the row. if ($table->{$checkedOutField} > 0 && $table->{$checkedOutField} != $user->get('id')) { $this->setError(\JText::_('JLIB_APPLICATION_ERROR_CHECKOUT_USER_MISMATCH')); return false; } // Attempt to check the row out. if (!$table->checkOut($user->get('id'), $pk)) { $this->setError($table->getError()); return false; } } return true; } /** * Abstract method for getting the form from the model. * * @param array $data Data for the form. * @param boolean $loadData True if the form is to load its own data (default case), false if not. * * @return \JForm|boolean A \JForm object on success, false on failure * * @since 1.6 */ abstract public function getForm($data = array(), $loadData = true); /** * Method to get a form object. * * @param string $name The name of the form. * @param string $source The form source. Can be XML string if file flag is set to false. * @param array $options Optional array of options for the form creation. * @param boolean $clear Optional argument to force load a new form. * @param string $xpath An optional xpath to search for the fields. * * @return \JForm|boolean \JForm object on success, false on error. * * @see \JForm * @since 1.6 */ protected function loadForm($name, $source = null, $options = array(), $clear = false, $xpath = false) { // Handle the optional arguments. $options['control'] = ArrayHelper::getValue((array) $options, 'control', false); // Create a signature hash. But make sure, that loading the data does not create a new instance $sigoptions = $options; if (isset($sigoptions['load_data'])) { unset($sigoptions['load_data']); } $hash = md5($source . serialize($sigoptions)); // Check if we can use a previously loaded form. if (!$clear && isset($this->_forms[$hash])) { return $this->_forms[$hash]; } // Get the form. \JForm::addFormPath(JPATH_COMPONENT . '/models/forms'); \JForm::addFieldPath(JPATH_COMPONENT . '/models/fields'); \JForm::addFormPath(JPATH_COMPONENT . '/model/form'); \JForm::addFieldPath(JPATH_COMPONENT . '/model/field'); try { $form = \JForm::getInstance($name, $source, $options, false, $xpath); if (isset($options['load_data']) && $options['load_data']) { // Get the data for the form. $data = $this->loadFormData(); } else { $data = array(); } // Allow for additional modification of the form, and events to be triggered. // We pass the data because plugins may require it. $this->preprocessForm($form, $data); // Load the data into the form after the plugins have operated. $form->bind($data); } catch (\Exception $e) { $this->setError($e->getMessage()); return false; } // Store the form for later. $this->_forms[$hash] = $form; return $form; } /** * Method to get the data that should be injected in the form. * * @return array The default data is an empty array. * * @since 1.6 */ protected function loadFormData() { return array(); } /** * Method to allow derived classes to preprocess the data. * * @param string $context The context identifier. * @param mixed &$data The data to be processed. It gets altered directly. * @param string $group The name of the plugin group to import (defaults to "content"). * * @return void * * @since 3.1 */ protected function preprocessData($context, &$data, $group = 'content') { // Get the dispatcher and load the users plugins. $dispatcher = \JEventDispatcher::getInstance(); \JPluginHelper::importPlugin($group); // Trigger the data preparation event. $results = $dispatcher->trigger('onContentPrepareData', array($context, &$data)); // Check for errors encountered while preparing the data. if (count($results) > 0 && in_array(false, $results, true)) { $this->setError($dispatcher->getError()); } } /** * Method to allow derived classes to preprocess the form. * * @param \JForm $form A \JForm 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 * * @see \JFormField * @since 1.6 * @throws \Exception if there is an error in the form event. */ protected function preprocessForm(\JForm $form, $data, $group = 'content') { // Import the appropriate plugin group. \JPluginHelper::importPlugin($group); // Get the dispatcher. $dispatcher = \JEventDispatcher::getInstance(); // Trigger the form preparation event. $results = $dispatcher->trigger('onContentPrepareForm', array($form, $data)); // Check for errors encountered while preparing the form. if (count($results) && in_array(false, $results, true)) { // Get the last error. $error = $dispatcher->getError(); if (!($error instanceof \Exception)) { throw new \Exception($error); } } } /** * Method to validate the form data. * * @param \JForm $form The form to validate against. * @param array $data The data to validate. * @param string $group The name of the field group to validate. * * @return array|boolean Array of filtered data if valid, false otherwise. * * @see \JFormRule * @see \JFilterInput * @since 1.6 */ public function validate($form, $data, $group = null) { // Include the plugins for the delete events. \JPluginHelper::importPlugin($this->events_map['validate']); $dispatcher = \JEventDispatcher::getInstance(); $dispatcher->trigger('onUserBeforeDataValidation', array($form, &$data)); // Filter and validate the form data. $data = $form->filter($data); $return = $form->validate($data, $group); // Check for an error. if ($return instanceof \Exception) { $this->setError($return->getMessage()); return false; } // Check the validation results. if ($return === false) { // Get the validation messages from the form. foreach ($form->getErrors() as $message) { $this->setError($message); } return false; } // Tags B/C break at 3.1.2 if (!isset($data['tags']) && isset($data['metadata']['tags'])) { $data['tags'] = $data['metadata']['tags']; } return $data; } }