ThinkRobot » tip http://think-robot.com Design & Development Blog Sat, 06 Mar 2010 20:58:13 +0000 http://wordpress.org/?v=2.7.1 en hourly 1 Multiple changes and a delete on same object in doctrine http://think-robot.com/2010/03/multiple-changes-and-a-delete-on-same-object-in-doctrine/ http://think-robot.com/2010/03/multiple-changes-and-a-delete-on-same-object-in-doctrine/#comments Sat, 06 Mar 2010 20:58:13 +0000 Joanna http://think-robot.com/?p=219 delete(); $user['Address']->state(Doctrine_Record::STATE_LOCKED); (...) $user->save(); It seems that unless you set the state the save later on still sees an initialized (though empty!) relation. Related Articles:Doctrine Many To Many With Extra FieldsHitch. Object-oriented event handlers with [...]]]> If you want to make several different changes to a doctrine record object you might find yourself slightly puzzled when it comes to deleting related objects.

$user['Address']->delete();
$user['Address']->state(Doctrine_Record::STATE_LOCKED);
(...)
$user->save();

It seems that unless you set the state the save later on still sees an initialized (though empty!) relation.

]]> http://think-robot.com/2010/03/multiple-changes-and-a-delete-on-same-object-in-doctrine/feed/ Zend_Date time part and GMT http://think-robot.com/2009/12/zend_date-time-part-and-gmt/ http://think-robot.com/2009/12/zend_date-time-part-and-gmt/#comments Wed, 16 Dec 2009 21:06:04 +0000 Joanna http://think-robot.com/?p=215 If you live in the UK you might have a surprise waiting in store for you if you use Zend_Date for the time part only. For a while I even thought this was a bug, however digging deeper has shown that actually it’s Zend_Date that is right, in a way at least.

When setting a time before 1972 - this is 1970 and 1971 the time part will not be shifted in the UK locale as DST was only introduced in 1972!

This means if you are only calculating times and need the appropriate time adjustment you will need to set a date as no date part in Zend_Date means 1st Jan 1970.

]]> http://think-robot.com/2009/12/zend_date-time-part-and-gmt/feed/ Regex for Autolinking URLs http://think-robot.com/2009/04/regex-for-autolinking-urls/ http://think-robot.com/2009/04/regex-for-autolinking-urls/#comments Mon, 13 Apr 2009 12:04:42 +0000 Andrew http://think-robot.com/?p=145 For a recent project I was wanting to perform an exceptionally common task. Converting things that look like URLs in the text into clickable links. However wherever I’ve seen this implemented before I’ve always encountered the same annoying problem, namely the links break when the user types a URL and adds some punctuation at the end since the punctuation gets captured as part of the link.

For example:

If you like the Seattle Mariners and enjoy learning about baseball statistics you should really visit http://ussmariner.com.

It struck me that this should be something that would be solvable with Lookahead, that is we could check whether the punctuation character was followed directly by a character that could be part of the URL.

The following regex attempts to do this. It will allow . , ! ? ; and : to appear at the end of a URL without including them in the match.

$str = preg_replace('%(https?://(([^ .,!?;:"\'\(\)\r\n\t])|((\.|,|!|\?|;|:)(?=[_a-z0-9])))+)%i', '<a href="\\1">\\1</a>', $str);

It works using an alternation. The first side of the alternation checks for any character that isn’t in our punctuation list (and certain other characters such as quote marks and spaces that we simply don’t want to allow in a URL). The other half checks the characters in the punctuation list and uses lookahead to ensure that they’re followed by another character.

I’m sure there’s room for improvement here, but I’ve been pretty please with how this has worked so far.

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