Deadly Technology » Tips of the Week

Compare versions of a file in git

frank — Tue, 28 Sep 2010 06:21:42 +0000

Super quick tip because I’m always forgetting – if you want to compare an older version of a file with the most recent version in your git repository: git difftool HEAD~50 path/to/file Just swap out 50 with the number of commits you want to go back. Install Meld if you want a great diff tool [...]

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Compare versions of a file in git

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How to access array data from SilverStripe sessions easily

frank — Tue, 14 Sep 2010 02:28:07 +0000

Its not evident from the SilverStripe documentation on sessions, but you can access nested array data from SilverStripe sessions using dot notation. If you save an array of data using the SilverStripe’s Session class: $myArrayOfValues = array('keyword'=>'value'); Session::set('MyArrayOfValues', $myArrayOfValues); You can access and clear the ‘value’ above specifically using something like: $valueFromSession = Session::get("MyArrayOfValues.keyword"); //Clear [...]

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How to access array data from SilverStripe sessions easily

How to change the breadcrumb separator on SilverStripe

frank — Mon, 13 Sep 2010 01:04:27 +0000

Quick tip to change the separator used by SilverStripe to separate the links of the breadcrumb. By default SilverStripe uses » to separate breadcrumb links, in the SiteTree class there is a public static varaible called breadcrumbs_delimiter: /** * Delimit breadcrumb-links generated by BreadCrumbs() * * @var string */ public static $breadcrumbs_delimiter = " » [...]

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How to change the breadcrumb separator on SilverStripe

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Jquery Lightbox Not Working?

frank — Thu, 12 Aug 2010 16:17:09 +0000

Had a struggle getting this jquery lightbox working recently, the solution for me was to alter the markup of the popup div because some divs were not closing correctly with />. Basically I had to replace this portion of code: /** * Create the jQuery lightBox plugin interface * * The HTML markup will be [...]

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Jquery Lightbox Not Working?

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cakePHP saveall() and transactions, jQuery form plugin AJAX error handling

Call user function for magic method PHP

frank — Wed, 11 Aug 2010 10:42:29 +0000

Put a bit of work into upgrading the blog and might as well make a quick post now. Heres a trick to test if a class variable exists, isset or has a particular value dynamically. Call the magic method __get() for the variable name which you can generate on the fly. For example, in SilverStripe [...]

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Call user function for magic method PHP

vnStat hack to measure data usage in a given billing cycle

frank — Wed, 09 Jun 2010 06:22:57 +0000

I’m using vnStat to measure internet usage on my Ubuntu 10.04 laptop, coupled with the vnStat PHP frontend it works nicely. Only problem was the summaries of disk usage started at the beginning of the month (sensibly) and we get billed on the 23rd, which is when our month ticks over and we get a [...]

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vnStat hack to measure data usage in a given billing cycle

Non capturing groups in Perl regular expressions

frank — Wed, 20 May 2009 03:22:22 +0000

Non capturing groups are very handy, recently I was working on grabbing a portion of xml out of a document. After trying the PHP 5 xmlReader() class I opted for the quick and dirty Perl regular expressions for this script. Problem is with the dot/period operator . which matches any character except for newlines \n. [...]

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Non capturing groups in Perl regular expressions

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Don’t install IE on Ubuntu 8.04

Blackberry 8800 html checkbox issues

frank — Mon, 30 Mar 2009 13:49:41 +0000

This was such a mission to fix, it deserves a post. Starting with a very basic login page using standard html form elements, a couple of text inputs for username and password, a checkbox to accept terms and conditions and a submit button. The login system would work fine on very early blackberries version 3.7.0 [...]

Fix Eclipse crashing on Ubuntu 8.04

frank — Wed, 28 Jan 2009 21:37:50 +0000

I’ve had some problems with Eclipse 3.3, Ubuntu 8.04 and Java JVM 1.6, just crashing mostly. There are a slew of fixes out there, but this simple fix has seemed to work so far… Edit eclipse.ini to explicitly add details for the vm Eclipse needs to use: -vm /usr/lib/jvm/java-6-openjdk/bin/java HTH. Post from: Deadly Technology ©Fix [...]

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Don’t install IE on Ubuntu 8.04

How to switch off compiz and keep your settings

frank — Fri, 19 Dec 2008 19:08:47 +0000

I was noticing some flickering watching dvds on Ubuntu 8.04 whilst running compiz. The flickering was even worse on those rare occassions I play a game. All this flickering went away when I disabled compiz, however, when enabling compiz again all the settings had been reset to defaults which was really annoying! Here is the [...]