What do Dollar and Caret ( $ and ^) sign in Django urls mean?

$ and ^ are regular expression characters that have a special meaning: the caret means “require that the pattern matches the start of the string,” and the dollar sign means “require that the pattern matches the end of the string.” For example consider the  following url pattern

Without the dollar sign at the end […]

Right way to break Django code for debugguing

Django traceback is a very helpful tool in Django development. It saves us from the boring tasking of writing print statements to track variables. Traceback doesn’t kick when there is no error.  There may be no coding errors but there is a flaw in our application logic which we want to debug. In such cases […]

A complete guide to Integrating MongoDB with Elastic Search

After almost two weeks and several re-installs and fresh installs, I finally got to integrate mongodb and elastic search. Here is a step by step procedure on how to integrate them. If you follow this procedure carefully,  it will prevent errors like Exception: java.lang.NoSuchMethodError: com.mongodb.Mongo.fsyncAndLock() { “error” : “IndexMissingException[[testmongo] missing]”, “status” : 404 } Follow […]

Error whil creating super user in django1.4 on MAC

I got the following error while trying to create a super user from shell for django1.4.

This problem was rectified by running this command in terminal before adding the user export LANG=”en_US.UTF-8″ I’m guessing this character encoding problem while running syncdb is the reason for the following error while accessing admin section of django1.4 […]

How to start stop apache on MAC OSX

starting webserver in mac osx

start Apache apachectl start Stop Apache apachectl stop Restart Apache apachectl restart If the above commands don’t work, try these /etc/init.d/httpd start /etc/init.d/httpd stop /etc/init.d/httpd restart You can also start the web server from the system preferences. Open system preferences, go to sharing and then enable web sharing

Where is httpd.conf file in Mac OSX Lion

Open hidden folders in mac osx

On mac httpd.conf file is located in the directory /etc/apache2/. You can access it through terminal if you want to navigate to it through finder, on finder toolbar goto go->go to folder and type in /etc/apache2

Make command not found in Mac OSX

If you get a -bash: make: command not found error while trying to compile from source, you have to install xcode and then in xcode goto preferences->downloads and install xcode developer tools Download Xcode I’m not sure if you can install command lines without xcode. I can not test as I already have Xcode on […]