Dreamer, Entrepreneur, Full Stack Developer and an Eternal Student
Some times we need to get the number of documents with a distinct/unique value. An example use case is in the classic blog example. Get the number of authors with at least one post. Get the number of distinct tags/categories You can use the following commands to get the answers for the above questions db.posts.distinct(‘author’).length
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
I got the following error while trying to create a super user from shell for django1.4. File “/Library/Python/2.7/site-packages/django/contrib/auth/management/__init__.py”, line 85, in get_system_username return getpass.getuser().decode(locale.getdefaultlocale()[1]) TypeError: decode() argument 1 must be string, not None 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
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
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
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
If mobile browsers are not respecting your media queries and showing desktop instead of mobile site, add this meta tag before linking the style sheet. <meta name=”viewport” content=”width=device-width”>