scala - How to recover an error from a Future in an EssentialAction -


starting example this post, i'm wondering how deal recover:

def hastoken(action: string => essentialaction): essentialaction = essentialaction { requestheader =>   val maybetoken = requestheader.headers.get("session")    val futureiteratee: future[iteratee[array[byte], simpleresult]] = maybetoken map { token =>     //this returns future...     session.find(token).map {       case some(session) => action(session)(requestheader)       case none => done[array[byte], result](unauthorized("invalid token"))     }.recover {       done[array[byte], result](unauthorized("400 error finding security token\n"))     }   } getorelse {     future.successful(done[array[byte], result](unauthorized("401 no security token\n")))   }    iteratee.flatten(futureiteratee) }

the code above doesn't compile , following error message:

[error] /home/j3d/projects/test/app/security.scala:80: type mismatch; [error]  found   : scala.concurrent.future[play.api.libs.iteratee.iteratee[_4,play.api.mvc.result] forsome { type _4 >: _3 <: array[byte]; type _3 <: array[byte] }] [error]  required: scala.concurrent.future[play.api.libs.iteratee.iteratee[array[byte],play.api.mvc.result]] [error]         } recover { [error]           ^ [error] 1 error found [error] (compile:compile) compilation failed

am missing something?

oddly enough, thought problem might've been function wasn't inferring proper type needed. has happened me in past result type depended on existing generic type, e.g. u >: t.

after trying code snippet though, noticed didn't use partial function recover call, , after fixed compiled without problems.

session.find(token).map {     case some(session) => action(session)(requestheader)     case none => done[array[byte], result](unauthorized("invalid token")) }.recover {     case _ =>         done[array[byte], result](unauthorized("400 error finding security token\n")) }

Comments

Post a Comment

Popular posts from this blog

javascript - Bootstrap Popover: iOS Safari strange behaviour -

i looking through twitter bootstrap documentation, , i'm interested in implementing dismissible popover when button clicked. here example bootstrap's docs: http://getbootstrap.com/javascript/#dismiss-on-next-click when press "dismissible popover" button os x safari browser works fine. when access same link above ios safari, button not work. is, popover not dismissed on click. why button not working ios safari? the example linked using data-trigger="focus" attribute. try changing data-trigger="click" . <a tabindex="0" class="btn btn-lg btn-danger" role="button" data-toggle="popover" data-trigger="click" title="dismissible popover" data-content="and here's amazing content. it's engaging. right?">dismissible popover</a>
Read more

Magento/PHP - Get phones on all members in a customer group -

i working on custom magento extension. working around adminhtml part , i've created custom form there. here form code: <?php class vivasindustries_smsnotification_block_adminhtml_sms_sendmass_edit_form extends mage_adminhtml_block_widget_form { public function _preparelayout() { $extensionpath = mage::getmoduledir('js', 'vivasindustries_smsnotification'); $head = $this->getlayout()->getblock('head'); $head->addjs('jquery.js'); $head->addjs('vivas.js'); return parent::_preparelayout(); } protected function _prepareform() { $form = new varien_data_form(array( 'id' => 'edit_form', 'action' => $this->geturl('*/*/save', array('id' => $this->getrequest()->get...
Read more

session - Logging Out Using PHP -

i have seen other programs regarding can't seem make work. doing wrong? want achieve after user logged out, going previous pages become restricted. i have 3 php files: 1. sample.php - main page username , password filled in 2. successful.php - user's page after logging in 3. logout.php - destorys session hinder user access pages after logging out sample.php </html> <form action="" method="post"> <table> <tr> <td>username:</td> <td>password:</td> </tr> <tr> <td><input type="text" name="username"></td> <td><input type="password" name="password"></td> </tr> <tr> <td><input type="submit" value="submit" name="submit"></td> </tr> </table> </form> </html> <?php $servername = "localhost"; $username = ...
Read more