Why are PHP namespaces defined using a backslash? It looks ugly. Unless of course, there is a good reason for the "\"? Does this namespaced code run more efficiently on Windows? Since namespaces are new in PHP5 why not take the opportunity to use them wh...

Very, very basic git workflow git pull git branch dev_branch git checkout dev_branch #make some changes git checkout master git merge dev_branch git branch -d branch_to_delete git push

The module and class below demonstrate how to use instance methods and class methods from "module mixins". The thing to remember is scope. For instance, to use class methods within instance methods you need to call them from the class itself. This is acco...

If you follow the instructions on how to install the Rails Redmine PM Software (available here) and are using Apache with Passenger (REE), you need to delete the .htaccess file that is kept in RAILS_ROOT/public directory. Otherwise you'll see a 404 page n...

When you use validations in Rails, db column names are used as 'keys' for error messages. This is usually the preferred way to go about it because this maps nicely to the form fields. However, if you use a virtual attribute this may not be the case. For e...

Active Record find methods for selecting range from http://charlesmaxwood.com/notes-from-reading-activerecordbase/ Student.find(:all, :conditions => { :grade => 9..12 }) return a range Student.find(:all, :conditions => { :grade => [9,11,12] }) will retu...

The best place to keep application constants which are environment specific is in config/environments directory. For instance... # in RAILS_ROOT/config/environments/development.rb APP_DOMAIN = "localhost" # in RAILS_ROOT/config/environments/production.rb...

On your local machine cd into the .ssh directory in your home "~/" directory. If it doesn't exist you can create it with "mkdir ~/.ssh". Next generate your public/private keys and copy the public key to the remote server. cd ~/.ssh ssh-keygen ...

Using the Acts as Taggable On plugin to add categories to a model class, I wanted to override the to_param method and place the name attribute in the url. The plugin, installed as a gem, source shouldn't need to be hacked in order to accomplish this. The ...

Step 1. Open up your browser and visit http://www.hexxie.com. You can also go to anything.hexxie.com and everything.hexxie.com, which will resolve to your local machine (assuming it's localhost at 127.0.0.1). How it works Super simple. I just pointed hex...