Generate URL symfony 2 empty value

Question

I have this generate url link in symfony 2 :

$route = $this->generateUrl('mail', array('from' => $oSender->getSettingValue(), 'adres' => (empty($aInfo['executorEmail']) ? '[email protected]' : $aInfo['executorEmail']), 'subject' => 'Werkbonnen project ' . $aInfo['projectName'] . ' week ' . $aInfo['workOrderWeeknumber'], 'name' => $aInfo['executorName'], 'filename' => $filename, 'filename2' => '', 'workOrderId' => $id));

route annotation:

 /** * @Route("/workorder/mail/{from}/{adres}/{subject}/{name}/{filename}/{filename2}/{workOrderId}", name="mail") * @Template() */

And this function where the generate route is going:

public function mailAction(Request $request, $from = '', $adres = '', $subject = '', $name = '', $filename = '', $filename2 = '', $workOrderId) { // some code here not important }

It keeps saying this :

Parameter "filename2" for route "mail" must match "[^/]++" ("" given) to generate a corresponding URL.

How can i give a empty value with the generateUrl function in symfony. variable filename2 is optional.

Thanks!

Rooneyl · Accepted Answer · 2015-01-30 09:21:52Z

Routes are the same as a normal PHP function, that you can't have an empty parameter in the variables passed, when you have other parameters after it.
So with your problem you have two choices;

Put the filename2 parameter at the end of the route, making it optional
Keep filename2 in place, but give it a default value.

If you choose option 2 an example route would be;

/** * @Route("/workorder/mail/{from}/{adres}/{subject}/{name}/{filename}/{filename2}/{workOrderId}", name="mail", defaults={"filename2" = 0}) */

More information on routes with parameters can be found here in the Symfony docs.

ggioffreda · Accepted Answer · 2015-01-30 09:06:37Z

You cannot pass an empty string to a URL parameter. Try something like:

$route = $this->generateUrl('mail', array('from' => $oSender->getSettingValue(), 'adres' => (empty($aInfo['executorEmail']) ? '[email protected]' : $aInfo['executorEmail']), 'subject' => 'Werkbonnen project ' . $aInfo['projectName'] . ' week ' . $aInfo['workOrderWeeknumber'], 'name' => $aInfo['executorName'], 'filename' => $filename, 'filename2' => 'something', 'workOrderId' => $id));

The regular expression is clear, [^/]++ means "a non empty string that does not contain the character /".

If that parameter can be empty you cannot put it in the URL, you have to use the query string instead:

/your/really/long/url/with/all/your/parameters?filename2=

Thomas Crawford · Accepted Answer · 2015-01-30 09:19:35Z

 $route = $this->generateUrl('mail', array( 'workOrderId' => $id, 'from' => $oSender->getSettingValue(), 'adres' => (empty($aInfo['executorEmail']) ? '[email protected]' : $aInfo['executorEmail']), 'subject' => 'Werkbonnen project ' . $aInfo['projectName'] . ' week ' . $aInfo['workOrderWeeknumber'], 'name' => $aInfo['executorName'], 'filename' => $filename, 'filename2' => ''));

Nevermind this is working for me, must give the filename2 parameter as last in the url.

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