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<?php |
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class ShortListController extends Page_Controller |
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{ |
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private static $allowed_actions = array( |
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'renderList', |
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'performAction' |
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); |
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private static $url_handlers = array( |
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'add' => 'performAction', |
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'remove' => 'performAction', |
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'$URL!' => 'renderList', |
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); |
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private static $extensions = array( |
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'ShortListPaginationExtension' |
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); |
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public function init() |
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{ |
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parent::init(); |
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Session::start(); |
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if ($this->request->getVar('page')) { |
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$this->currentPage = $this->request->getVar('page'); |
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} |
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} |
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/** |
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* When landing on the homepage, if there is a shortlist for the current |
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* user, redirect to the correct URL. Otherwise, 404. |
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* */ |
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public function index($request) |
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{ |
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$shortlist = $this->getSessionShortList(); |
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if (!empty($shortlist)) { |
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return $this->redirect(Config::inst()->get('ShortList', 'URLSegment') . $shortlist->URL); |
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} else { |
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if (!$shortlist || !$shortlist->exists()) { |
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$shortlist = new ShortList(); |
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$shortlist->write(); |
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} |
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} |
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// render with empty template. |
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return $this->renderWith(array('Page', 'ShortList_empty')); |
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} |
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/** |
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* Get the absolute URL of this controller. |
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* */ |
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public function Link($action = null) |
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{ |
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$shortlist = $this->getSessionShortList(); |
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$url = Config::inst()->get('ShortList', 'URLSegment'); |
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if ($shortlist) { |
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$url .= $shortlist->URL; |
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} |
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return $url; |
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} |
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public function renderList($request) |
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{ |
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$shortlist = DataObject::get_one('ShortList', $filter = array('URL' => $request->param('URL'))); |
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$link = false; |
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$count = 0; |
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if ($this->dontRender($shortlist, $request)) { |
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return $this->httpError(404); |
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} |
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if ($shortlist && $shortlist->exists()) { |
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$link = $shortlist->Link(); |
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$count = $shortlist->ShortListItems()->Count(); |
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} |
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return $this->customise(array( |
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'ShortlistURL' => $link, |
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'ShortlistCount' => $count |
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))->renderWith( |
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array('ShortList', 'Page') |
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); |
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} |
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public function performAction($request) |
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{ |
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if ($this->dontPerformAction($request)) { |
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return $this->httpError(404); |
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} |
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$action = $this->determineAction($request->getURL()); |
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$status = $action->performAction( |
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$shortlist = $this->getSessionShortList(), |
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$ID = $request->getVar('id'), |
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$type = $request->getVar('type'), |
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$session = $request->getVar('s') |
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); |
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if ($request->isAjax()) { |
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return $this->renderAjax($session); |
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} |
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if (array_key_exists('output', $request->getVars())) { |
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return $status; |
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} |
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return $this->redirectBack(); |
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} |
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/** |
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* Get the number of items in the current short list. |
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* |
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* @param session The session to check & find a shortlist for. |
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* @return mixed false if no session exists - else the number of items in the shortlist. |
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* */ |
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public function shortListCount($session = false) |
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{ |
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if ($this->isSessionValid($session)) { |
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return false; |
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} |
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$shortlist = $this->getSessionShortList(); |
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if (!$shortlist || !$shortlist->exists()) { |
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return 0; |
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} |
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return $shortlist->Items()->count(); |
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} |
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public static function getShortListSession() |
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{ |
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return DataObject::get_one('ShortList', $filter = array('SessionID' => self::getSecurityToken())); |
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} |
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/** |
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* Get the token to use to add/remove from shortlist. |
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* */ |
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public static function getSecurityToken() |
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{ |
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return Utilities::getSecurityToken(); |
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} |
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151
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/** |
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* Determine the action based upon the url requested. |
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* */ |
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private function determineAction($url) |
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{ |
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$matches = array(); |
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157
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preg_match('/remove|add/', $url, $matches); |
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158
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159
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switch ($matches[0]) { |
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case 'remove': |
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161
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return new RemoveFromshortlistAction(); |
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162
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case 'add': |
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return new AddToshortlistAction(); |
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default: |
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return null; |
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166
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} |
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167
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} |
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168
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169
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/** |
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170
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* Return a valid shortlist - or null. |
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171
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* */ |
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private function getSessionShortList() |
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173
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{ |
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return DataObject::get_one('ShortList', |
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$filter = array('SessionID' => self::getSecurityToken()), |
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$cache = false |
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177
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); |
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178
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} |
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179
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180
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/** |
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181
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* Return the json encoded count & url for the current session |
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182
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* */ |
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183
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private function renderAjax($session) |
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184
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{ |
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185
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$shortlist = $this->getSessionShortList(); |
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186
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$url = false; |
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187
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188
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if ($shortlist && $shortlist->exists()) { |
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189
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$url = $shortlist->Link(); |
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190
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} |
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191
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192
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return json_encode(array( |
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'count' => $this->shortListCount($session), |
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194
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'url' => $url |
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195
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)); |
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196
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} |
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197
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198
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/** |
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199
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* Don't render the template! |
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200
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* */ |
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201
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private function dontRender($shortlist, $request) |
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202
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{ |
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203
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return is_null(self::getSecurityToken()) || !$request->param('URL') || !$shortlist || !$shortlist->exists(); |
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204
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} |
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205
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206
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/** |
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207
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* Is this session valid? |
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208
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* */ |
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209
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private function isSessionValid($session) |
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210
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{ |
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211
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return is_null(self::getSecurityToken()) || !$session || $session != self::getSecurityToken(); |
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212
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} |
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213
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214
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/** |
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215
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* Don't perform an action. |
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216
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* */ |
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217
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private function dontPerformAction($request) |
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218
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{ |
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219
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return is_null(self::getSecurityToken()) || !$request->getVar('id') || !$request->getVar('type') || |
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220
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!$request->getVar('s') || $request->getVar('s') != self::getSecurityToken(); |
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221
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} |
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222
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} |
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223
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salted-herring /
silverstripe-shortlist
Loading history...