PHP PageManager::edit方法代码示例

 public static function updatePagesOfPrototype($prototype_id, $types)
 {
     if (empty($prototype_id)) {
         return;
     }
     $prototype = PageManager::fetchPageByID($prototype_id);
     $pages = self::fetchPagesOfPrototype($prototype_id);
     $fields = array();
     if (is_array($pages) && !empty($pages)) {
         foreach ($pages as $page) {
             $fields['params'] = $prototype['params'];
             $fields['events'] = $prototype['events'];
             $fields['data_sources'] = $prototype['data_sources'];
             PageManager::edit($page['id'], $fields, true);
             PageManager::addPageTypesToPage($page['id'], array_values(array_diff($types, array('prototype'))));
         }
     }
 }

 public function view()
 {
     $items = $_REQUEST['items'];
     if (!is_array($items) || empty($items)) {
         return;
     }
     $destination = self::kREORDER_UNKNOWN;
     if ($this->_context[0] == 'blueprints' && $this->_context[1] == 'pages') {
         $destination = self::kREORDER_PAGES;
     } elseif ($this->_context[0] == 'blueprints' && $this->_context[1] == 'sections') {
         $destination = self::kREORDER_SECTIONS;
     } elseif ($this->_context[0] == 'extensions') {
         $destination = self::kREORDER_EXTENSION;
     }
     switch ($destination) {
         case self::kREORDER_PAGES:
             foreach ($items as $id => $position) {
                 if (!PageManager::edit($id, array('sortorder' => $position))) {
                     $this->setHttpStatus(self::HTTP_STATUS_ERROR);
                     $this->_Result->setValue(__('A database error occurred while attempting to reorder.'));
                     break;
                 }
             }
             break;
         case self::kREORDER_SECTIONS:
             foreach ($items as $id => $position) {
                 if (!SectionManager::edit($id, array('sortorder' => $position))) {
                     $this->setHttpStatus(self::HTTP_STATUS_ERROR);
                     $this->_Result->setValue(__('A database error occurred while attempting to reorder.'));
                     break;
                 }
             }
             break;
         case self::kREORDER_EXTENSION:
             // TODO
             break;
         case self::kREORDER_UNKNOWN:
         default:
             $this->setHttpStatus(self::HTTP_STATUS_BAD_REQUEST);
             break;
     }
 }

 /**
  * This function will update all children of a particular page (if any)
  * by renaming/moving all related files to their new path and updating
  * their database information. This is a recursive function and will work
  * to any depth.
  *
  * @param integer $page_id
  *  The ID of the Page whose children need to be updated
  * @param string $page_path
  *  The path of the Page, which is the handles of the Page parents. If the
  *  page has multiple parents, they will be separated by a forward slash.
  *  eg. article/read. If a page has no parents, this parameter should be null.
  * @return boolean
  */
 public static function editPageChildren($page_id = null, $page_path = null)
 {
     if (!is_int($page_id)) {
         return false;
     }
     $page_path = trim($page_path, '/');
     $children = PageManager::fetchChildPages($page_id);
     foreach ($children as $child) {
         $child_id = $child['id'];
         $fields = array('path' => $page_path);
         if (!PageManager::createPageFiles($page_path, $child['handle'], $child['path'], $child['handle'])) {
             $success = false;
         }
         if (!PageManager::edit($child_id, $fields)) {
             $success = false;
         }
         self::editPageChildren($child_id, $page_path . '/' . $child['handle']);
     }
     return $success;
 }

 public function __formAction()
 {
     $fields = $_POST['fields'];
     $this->_errors = array();
     $providers = Symphony::ExtensionManager()->getProvidersOf(iProvider::EVENT);
     $providerClass = null;
     if (trim($fields['name']) == '') {
         $this->_errors['name'] = __('This is a required field');
     }
     if (trim($fields['source']) == '') {
         $this->_errors['source'] = __('This is a required field');
     }
     $filters = isset($fields['filters']) ? $fields['filters'] : array();
     // See if a Provided Datasource is saved
     if (!empty($providers)) {
         foreach ($providers as $providerClass => $provider) {
             if ($fields['source'] == call_user_func(array($providerClass, 'getSource'))) {
                 call_user_func_array(array($providerClass, 'validate'), array(&$fields, &$this->_errors));
                 break;
             }
             unset($providerClass);
         }
     }
     $classname = Lang::createHandle($fields['name'], 255, '_', false, true, array('@^[^a-z\\d]+@i' => '', '/[^\\w-\\.]/i' => ''));
     $rootelement = str_replace('_', '-', $classname);
     $extends = 'SectionEvent';
     // Check to make sure the classname is not empty after handlisation.
     if (empty($classname) && !isset($this->_errors['name'])) {
         $this->_errors['name'] = __('Please ensure name contains at least one Latin-based character.', array($classname));
     }
     $file = EVENTS . '/event.' . $classname . '.php';
     $isDuplicate = false;
     $queueForDeletion = null;
     if ($this->_context[0] == 'new' && is_file($file)) {
         $isDuplicate = true;
     } elseif ($this->_context[0] == 'edit') {
         $existing_handle = $this->_context[1];
         if ($classname != $existing_handle && is_file($file)) {
             $isDuplicate = true;
         } elseif ($classname != $existing_handle) {
             $queueForDeletion = EVENTS . '/event.' . $existing_handle . '.php';
         }
     }
     // Duplicate
     if ($isDuplicate) {
         $this->_errors['name'] = __('An Event with the name %s already exists', array('<code>' . $classname . '</code>'));
     }
     if (empty($this->_errors)) {
         $multiple = in_array('expect-multiple', $filters);
         $elements = null;
         $placeholder = '<!-- GRAB -->';
         $source = $fields['source'];
         $params = array('rootelement' => $rootelement);
         $about = array('name' => $fields['name'], 'version' => 'Symphony ' . Symphony::Configuration()->get('version', 'symphony'), 'release date' => DateTimeObj::getGMT('c'), 'author name' => Symphony::Author()->getFullName(), 'author website' => URL, 'author email' => Symphony::Author()->get('email'));
         // If there is a provider, get their template
         if ($providerClass) {
             $eventShell = file_get_contents(call_user_func(array($providerClass, 'getTemplate')));
         } else {
             $eventShell = file_get_contents($this->getTemplate('blueprints.event'));
             $about['trigger condition'] = $rootelement;
         }
         $this->__injectAboutInformation($eventShell, $about);
         // Replace the name
         $eventShell = str_replace('<!-- CLASS NAME -->', $classname, $eventShell);
         // Build the templates
         if ($providerClass) {
             $eventShell = call_user_func(array($providerClass, 'prepare'), $fields, $params, $eventShell);
         } else {
             $this->__injectFilters($eventShell, $filters);
             // Add Documentation
             require_once CONTENT . '/content.ajaxeventdocumentation.php';
             $ajaxEventDoc = new contentAjaxEventDocumentation();
             $documentation = null;
             $doc_parts = array();
             // Add Documentation (Success/Failure)
             $ajaxEventDoc->addEntrySuccessDoc($doc_parts, $rootelement, $fields['source'], $filters);
             $ajaxEventDoc->addEntryFailureDoc($doc_parts, $rootelement, $fields['source'], $filters);
             // Filters
             $ajaxEventDoc->addDefaultFiltersDoc($doc_parts, $rootelement, $fields['source'], $filters);
             // Frontend Markup
             $ajaxEventDoc->addFrontendMarkupDoc($doc_parts, $rootelement, $fields['source'], $filters);
             $ajaxEventDoc->addSendMailFilterDoc($doc_parts, $rootelement, $fields['source'], $filters);
             /**
              * Allows adding documentation for new filters. A reference to the $documentation
              * array is provided, along with selected filters
              * @delegate AppendEventFilterDocumentation
              * @param string $context
              * '/blueprints/events/(edit|new|info)/'
              * @param array $selected
              *  An array of all the selected filters for this Event
              * @param array $documentation
              *  An array of all the documentation XMLElements, passed by reference
              */
             Symphony::ExtensionManager()->notifyMembers('AppendEventFilterDocumentation', '/blueprints/events/' . $rootelement . '/', array('selected' => $filters, 'documentation' => &$doc_parts));
             $documentation = join(PHP_EOL, array_map(create_function('$x', 'return rtrim($x->generate(true, 4));'), $doc_parts));
             $documentation = str_replace('\'', '\\\'', $documentation);
             $eventShell = str_replace('<!-- CLASS EXTENDS -->', $extends, $eventShell);
             $eventShell = str_replace('<!-- DOCUMENTATION -->', General::tabsToSpaces($documentation, 4), $eventShell);
         }
         $eventShell = str_replace('<!-- ROOT ELEMENT -->', $rootelement, $eventShell);
//.........这里部分代码省略.........

 /**
  * Given a resource type, a handle and a page, this function detaches
  * the given handle (which represents either a datasource or event) to that page.
  *
  * @param integer $type
  *  The resource type, either `RESOURCE_TYPE_EVENT` or `RESOURCE_TYPE_DS`
  * @param string $r_handle
  *  The handle of the resource.
  * @param integer $page_id
  *  The ID of the page.
  */
 public static function detach($type, $r_handle, $page_id)
 {
     $col = self::getColumnFromType($type);
     $pages = PageManager::fetch(false, array($col), array(sprintf('`id` = %d', $page_id)));
     if (is_array($pages) && count($pages) == 1) {
         $result = $pages[0][$col];
         $values = explode(',', $result);
         $idx = array_search($r_handle, $values, false);
         if ($idx !== false) {
             array_splice($values, $idx, 1);
             $result = implode(',', $values);
             return PageManager::edit($page_id, array($col => MySQL::cleanValue($result)));
         }
     }
     return false;
 }

 public function __formAction()
 {
     $fields = $_POST['fields'];
     $this->_errors = array();
     $providers = Symphony::ExtensionManager()->getProvidersOf(iProvider::DATASOURCE);
     $providerClass = null;
     if (trim($fields['name']) == '') {
         $this->_errors['name'] = __('This is a required field');
     }
     if ($fields['source'] == 'static_xml') {
         if (trim($fields['static_xml']) == '') {
             $this->_errors['static_xml'] = __('This is a required field');
         } else {
             $xml_errors = null;
             include_once TOOLKIT . '/class.xsltprocess.php';
             General::validateXML($fields['static_xml'], $xml_errors, false, new XsltProcess());
             if (!empty($xml_errors)) {
                 $this->_errors['static_xml'] = __('XML is invalid.');
             }
         }
     } elseif (is_numeric($fields['source'])) {
         if (strlen(trim($fields['max_records'])) == 0 || is_numeric($fields['max_records']) && $fields['max_records'] < 1) {
             if ($fields['paginate_results'] === 'yes') {
                 $this->_errors['max_records'] = __('A result limit must be set');
             }
         } elseif (!self::__isValidPageString($fields['max_records'])) {
             $this->_errors['max_records'] = __('Must be a valid number or parameter');
         }
         if (strlen(trim($fields['page_number'])) == 0 || is_numeric($fields['page_number']) && $fields['page_number'] < 1) {
             if ($fields['paginate_results'] === 'yes') {
                 $this->_errors['page_number'] = __('A page number must be set');
             }
         } elseif (!self::__isValidPageString($fields['page_number'])) {
             $this->_errors['page_number'] = __('Must be a valid number or parameter');
         }
         // See if a Provided Datasource is saved
     } elseif (!empty($providers)) {
         foreach ($providers as $providerClass => $provider) {
             if ($fields['source'] == call_user_func(array($providerClass, 'getSource'))) {
                 call_user_func_array(array($providerClass, 'validate'), array(&$fields, &$this->_errors));
                 break;
             }
             unset($providerClass);
         }
     }
     $classname = Lang::createHandle($fields['name'], 255, '_', false, true, array('@^[^a-z\\d]+@i' => '', '/[^\\w-\\.]/i' => ''));
     $rootelement = str_replace('_', '-', $classname);
     // Check to make sure the classname is not empty after handlisation.
     if (empty($classname) && !isset($this->_errors['name'])) {
         $this->_errors['name'] = __('Please ensure name contains at least one Latin-based character.', array($classname));
     }
     $file = DATASOURCES . '/data.' . $classname . '.php';
     $isDuplicate = false;
     $queueForDeletion = null;
     if ($this->_context[0] == 'new' && is_file($file)) {
         $isDuplicate = true;
     } elseif ($this->_context[0] == 'edit') {
         $existing_handle = $this->_context[1];
         if ($classname != $existing_handle && is_file($file)) {
             $isDuplicate = true;
         } elseif ($classname != $existing_handle) {
             $queueForDeletion = DATASOURCES . '/data.' . $existing_handle . '.php';
         }
     }
     // Duplicate
     if ($isDuplicate) {
         $this->_errors['name'] = __('A Data source with the name %s already exists', array('<code>' . $classname . '</code>'));
     }
     if (empty($this->_errors)) {
         $filters = array();
         $elements = null;
         $source = $fields['source'];
         $params = array('rootelement' => $rootelement);
         $about = array('name' => $fields['name'], 'version' => 'Symphony ' . Symphony::Configuration()->get('version', 'symphony'), 'release date' => DateTimeObj::getGMT('c'), 'author name' => Symphony::Author()->getFullName(), 'author website' => URL, 'author email' => Symphony::Author()->get('email'));
         // If there is a provider, get their template
         if ($providerClass) {
             $dsShell = file_get_contents(call_user_func(array($providerClass, 'getTemplate')));
         } else {
             $dsShell = file_get_contents($this->getTemplate('blueprints.datasource'));
         }
         // Author metadata
         self::injectAboutInformation($dsShell, $about);
         // Do dependencies, the template file must have <!-- CLASS NAME -->
         $dsShell = str_replace('<!-- CLASS NAME -->', $classname, $dsShell);
         // If there is a provider, let them do the prepartion work
         if ($providerClass) {
             $dsShell = call_user_func(array($providerClass, 'prepare'), $fields, $params, $dsShell);
         } else {
             switch ($source) {
                 case 'authors':
                     $extends = 'AuthorDatasource';
                     if (isset($fields['filter']['author'])) {
                         $filters = $fields['filter']['author'];
                     }
                     $elements = $fields['xml_elements'];
                     $params['order'] = $fields['order'];
                     $params['redirectonempty'] = $fields['redirect_on_empty'];
                     $params['redirectonforbidden'] = $fields['redirect_on_forbidden'];
                     $params['redirectonrequired'] = $fields['redirect_on_required'];
                     $params['requiredparam'] = trim($fields['required_url_param']);
//.........这里部分代码省略.........

//.........这里部分代码省略.........
                     return $this->pageAlert(__('Page Template could not be written to disk.') . ' ' . __('Please check permissions on %s.', array('<code>/workspace/pages</code>')), Alert::ERROR);
                 }
                 // Insert the new data:
                 if (empty($current)) {
                     /**
                      * Just prior to creating a new Page record in `tbl_pages`, provided
                      * with the `$fields` associative array. Use with caution, as no
                      * duplicate page checks are run after this delegate has fired
                      *
                      * @delegate PagePreCreate
                      * @since Symphony 2.2
                      * @param string $context
                      * '/blueprints/pages/'
                      * @param array $fields
                      *  The `$_POST['fields']` array passed by reference
                      */
                     Symphony::ExtensionManager()->notifyMembers('PagePreCreate', '/blueprints/pages/', array('fields' => &$fields));
                     if (!($page_id = PageManager::add($fields))) {
                         $this->pageAlert(__('Unknown errors occurred while attempting to save.') . '<a href="' . SYMPHONY_URL . '/system/log/">' . __('Check your activity log') . '</a>.', Alert::ERROR);
                     } else {
                         /**
                          * Just after the creation of a new page in `tbl_pages`
                          *
                          * @delegate PagePostCreate
                          * @since Symphony 2.2
                          * @param string $context
                          * '/blueprints/pages/'
                          * @param integer $page_id
                          *  The ID of the newly created Page
                          * @param array $fields
                          *  An associative array of data that was just saved for this page
                          */
                         Symphony::ExtensionManager()->notifyMembers('PagePostCreate', '/blueprints/pages/', array('page_id' => $page_id, 'fields' => &$fields));
                         $redirect = "/blueprints/pages/edit/{$page_id}/created/{$parent_link_suffix}";
                     }
                 } else {
                     /**
                      * Just prior to updating a Page record in `tbl_pages`, provided
                      * with the `$fields` associative array. Use with caution, as no
                      * duplicate page checks are run after this delegate has fired
                      *
                      * @delegate PagePreEdit
                      * @since Symphony 2.2
                      * @param string $context
                      * '/blueprints/pages/'
                      * @param integer $page_id
                      *  The ID of the Page that is about to be updated
                      * @param array $fields
                      *  The `$_POST['fields']` array passed by reference
                      */
                     Symphony::ExtensionManager()->notifyMembers('PagePreEdit', '/blueprints/pages/', array('page_id' => $page_id, 'fields' => &$fields));
                     if (!PageManager::edit($page_id, $fields, true)) {
                         return $this->pageAlert(__('Unknown errors occurred while attempting to save.') . '<a href="' . SYMPHONY_URL . '/system/log/">' . __('Check your activity log') . '</a>.', Alert::ERROR);
                     } else {
                         /**
                          * Just after updating a page in `tbl_pages`
                          *
                          * @delegate PagePostEdit
                          * @since Symphony 2.2
                          * @param string $context
                          * '/blueprints/pages/'
                          * @param integer $page_id
                          *  The ID of the Page that was just updated
                          * @param array $fields
                          *  An associative array of data that was just saved for this page
                          */

    public function __formAction()
    {
        $fields = $_POST['fields'];
        $this->_errors = array();
        $providers = Symphony::ExtensionManager()->getProvidersOf(iProvider::EVENT);
        $providerClass = null;
        if (trim($fields['name']) == '') {
            $this->_errors['name'] = __('This is a required field');
        }
        if (trim($fields['source']) == '') {
            $this->_errors['source'] = __('This is a required field');
        }
        $filters = isset($fields['filters']) ? $fields['filters'] : array();
        // See if a Provided Datasource is saved
        if (!empty($providers)) {
            foreach ($providers as $providerClass => $provider) {
                if ($fields['source'] == call_user_func(array($providerClass, 'getSource'))) {
                    call_user_func_array(array($providerClass, 'validate'), array(&$fields, &$this->_errors));
                    break;
                }
                unset($providerClass);
            }
        }
        $classname = Lang::createHandle($fields['name'], 255, '_', false, true, array('@^[^a-z\\d]+@i' => '', '/[^\\w-\\.]/i' => ''));
        $rootelement = str_replace('_', '-', $classname);
        $extends = 'SectionEvent';
        // Check to make sure the classname is not empty after handlisation.
        if (empty($classname) && !isset($this->_errors['name'])) {
            $this->_errors['name'] = __('Please ensure name contains at least one Latin-based character.', array($classname));
        }
        $file = EVENTS . '/event.' . $classname . '.php';
        $isDuplicate = false;
        $queueForDeletion = NULL;
        if ($this->_context[0] == 'new' && is_file($file)) {
            $isDuplicate = true;
        } else {
            if ($this->_context[0] == 'edit') {
                $existing_handle = $this->_context[1];
                if ($classname != $existing_handle && is_file($file)) {
                    $isDuplicate = true;
                } else {
                    if ($classname != $existing_handle) {
                        $queueForDeletion = EVENTS . '/event.' . $existing_handle . '.php';
                    }
                }
            }
        }
        // Duplicate
        if ($isDuplicate) {
            $this->_errors['name'] = __('An Event with the name %s already exists', array('<code>' . $classname . '</code>'));
        }
        if (empty($this->_errors)) {
            $multiple = in_array('expect-multiple', $filters);
            $elements = NULL;
            $placeholder = '<!-- GRAB -->';
            $source = $fields['source'];
            $params = array('rootelement' => $rootelement);
            $about = array('name' => $fields['name'], 'version' => 'Symphony ' . Symphony::Configuration()->get('version', 'symphony'), 'release date' => DateTimeObj::getGMT('c'), 'author name' => Administration::instance()->Author->getFullName(), 'author website' => URL, 'author email' => Administration::instance()->Author->get('email'));
            // If there is a provider, get their template
            if ($providerClass) {
                $eventShell = file_get_contents(call_user_func(array($providerClass, 'getTemplate')));
            } else {
                $eventShell = file_get_contents($this->getTemplate('blueprints.event'));
                $about['trigger condition'] = $rootelement;
            }
            $this->__injectAboutInformation($eventShell, $about);
            // Replace the name
            $eventShell = str_replace('<!-- CLASS NAME -->', $classname, $eventShell);
            // Build the templates
            if ($providerClass) {
                $eventShell = call_user_func(array($providerClass, 'prepare'), $fields, $params, $eventShell);
            } else {
                $this->__injectFilters($eventShell, $filters);
                // Add Documentation
                $documentation = NULL;
                $documentation_parts = array();
                $documentation_parts[] = new XMLElement('h3', __('Success and Failure XML Examples'));
                $documentation_parts[] = new XMLElement('p', __('When saved successfully, the following XML will be returned:'));
                if ($multiple) {
                    $code = new XMLElement($rootelement);
                    $entry = new XMLElement('entry', NULL, array('index' => '0', 'result' => 'success', 'type' => 'create | edit'));
                    $entry->appendChild(new XMLElement('message', __('Entry [created | edited] successfully.')));
                    $code->appendChild($entry);
                } else {
                    $code = new XMLElement($rootelement, NULL, array('result' => 'success', 'type' => 'create | edit'));
                    $code->appendChild(new XMLElement('message', __('Entry [created | edited] successfully.')));
                }
                $documentation_parts[] = self::processDocumentationCode($code);
                $documentation_parts[] = new XMLElement('p', __('When an error occurs during saving, due to either missing or invalid fields, the following XML will be returned') . ($multiple ? ' (<strong> ' . __('Notice that it is possible to get mixtures of success and failure messages when using the ‘Allow Multiple’ option') . '</strong>)' : NULL) . ':');
                if ($multiple) {
                    $code = new XMLElement($rootelement);
                    $entry = new XMLElement('entry', NULL, array('index' => '0', 'result' => 'error'));
                    $entry->appendChild(new XMLElement('message', __('Entry encountered errors when saving.')));
                    $entry->appendChild(new XMLElement('field-name', NULL, array('type' => 'invalid | missing')));
                    $code->appendChild($entry);
                    $entry = new XMLElement('entry', NULL, array('index' => '1', 'result' => 'success', 'type' => 'create | edit'));
                    $entry->appendChild(new XMLElement('message', __('Entry [created | edited] successfully.')));
                    $code->appendChild($entry);
                } else {
                    $code = new XMLElement($rootelement, NULL, array('result' => 'error'));
//.........这里部分代码省略.........

 public function __formAction()
 {
     $fields = $_POST['fields'];
     $this->_errors = array();
     $providers = Symphony::ExtensionManager()->getProvidersOf('data-sources');
     $providerClass = null;
     if (trim($fields['name']) == '') {
         $this->_errors['name'] = __('This is a required field');
     }
     if ($fields['source'] == 'static_xml') {
         if (trim($fields['static_xml']) == '') {
             $this->_errors['static_xml'] = __('This is a required field');
         } else {
             $xml_errors = NULL;
             include_once TOOLKIT . '/class.xsltprocess.php';
             General::validateXML($fields['static_xml'], $xml_errors, false, new XsltProcess());
             if (!empty($xml_errors)) {
                 $this->_errors['static_xml'] = __('XML is invalid');
             }
         }
     } elseif ($fields['source'] == 'dynamic_xml') {
         if (trim($fields['dynamic_xml']['url']) == '') {
             $this->_errors['dynamic_xml']['url'] = __('This is a required field');
         }
         // Use the TIMEOUT that was specified by the user for a real world indication
         $timeout = isset($fields['dynamic_xml']['timeout']) ? (int) $fields['dynamic_xml']['timeout'] : 6;
         // If there is a parameter in the URL, we can't validate the existence of the URL
         // as we don't have the environment details of where this datasource is going
         // to be executed.
         if (!preg_match('@{([^}]+)}@i', $fields['dynamic_xml']['url'])) {
             $valid_url = self::__isValidURL($fields['dynamic_xml']['url'], $timeout, $error);
             if ($valid_url) {
                 $data = $valid_url['data'];
             } else {
                 $this->_errors['dynamic_xml']['url'] = $error;
             }
         }
         if (trim($fields['dynamic_xml']['xpath']) == '') {
             $this->_errors['dynamic_xml']['xpath'] = __('This is a required field');
         }
         if (!is_numeric($fields['dynamic_xml']['cache'])) {
             $this->_errors['dynamic_xml']['cache'] = __('Must be a valid number');
         } elseif ($fields['dynamic_xml']['cache'] < 1) {
             $this->_errors['dynamic_xml']['cache'] = __('Must be greater than zero');
         }
     } elseif (is_numeric($fields['source'])) {
         if (strlen(trim($fields['max_records'])) == 0 || is_numeric($fields['max_records']) && $fields['max_records'] < 1) {
             if (isset($fields['paginate_results'])) {
                 $this->_errors['max_records'] = __('A result limit must be set');
             }
         } else {
             if (!self::__isValidPageString($fields['max_records'])) {
                 $this->_errors['max_records'] = __('Must be a valid number or parameter');
             }
         }
         if (strlen(trim($fields['page_number'])) == 0 || is_numeric($fields['page_number']) && $fields['page_number'] < 1) {
             if (isset($fields['paginate_results'])) {
                 $this->_errors['page_number'] = __('A page number must be set');
             }
         } else {
             if (!self::__isValidPageString($fields['page_number'])) {
                 $this->_errors['page_number'] = __('Must be a valid number or parameter');
             }
         }
     } elseif (!empty($providers)) {
         foreach ($providers as $providerClass => $provider) {
             if ($fields['source'] == call_user_func(array($providerClass, 'getSource'))) {
                 call_user_func(array($providerClass, 'validate'), &$fields, &$this->_errors);
                 break;
             }
             unset($providerClass);
         }
     }
     $classname = Lang::createHandle($fields['name'], 255, '_', false, true, array('@^[^a-z\\d]+@i' => '', '/[^\\w-\\.]/i' => ''));
     $rootelement = str_replace('_', '-', $classname);
     // Check to make sure the classname is not empty after handlisation.
     if (empty($classname) && !isset($this->_errors['name'])) {
         $this->_errors['name'] = __('Please ensure name contains at least one Latin-based character.', array($classname));
     }
     $file = DATASOURCES . '/data.' . $classname . '.php';
     $isDuplicate = false;
     $queueForDeletion = NULL;
     if ($this->_context[0] == 'new' && is_file($file)) {
         $isDuplicate = true;
     } elseif ($this->_context[0] == 'edit') {
         $existing_handle = $this->_context[1];
         if ($classname != $existing_handle && is_file($file)) {
             $isDuplicate = true;
         } elseif ($classname != $existing_handle) {
             $queueForDeletion = DATASOURCES . '/data.' . $existing_handle . '.php';
         }
     }
     // Duplicate
     if ($isDuplicate) {
         $this->_errors['name'] = __('A Data source with the name %s already exists', array('<code>' . $classname . '</code>'));
     }
     if (empty($this->_errors)) {
         $filters = array();
         $elements = NULL;
         $placeholder = '<!-- GRAB -->';
//.........这里部分代码省略.........