Google Doctype is an open encyclopedia and reference library. Written by web developers, for web developers. It includes articles on web security, JavaScript DOM manipulation, CSS tips and tricks, and more. The reference section includes a growing library of test cases for checking cross-browser and cross-platform compatibility.

Point your browser to http://code.google.com/intl/en/doctype/ and have a nice reading.

To add an attribute “author” to a model “post” :

script/generate migration AddAuthorToPost author:string

To delete this attribute :

script/generate migration RemoveAuthorFromPost author:string

Add and Remove specify the action to do and Post, separated by To or From, is the name of the model.

Don’t forget to run the migration by using :

rake db:migrate

Thanks to Tim Charper, you’ll just have to download and install a nice .dmg package ! You can grab your copy here : http://code.google.com/p/git-osx-installer/

Have fun with Git !

NB : For all subversion addicts, Versions is finally out of beta : http://versionsapp.com

We began to test it with Apache’s mod_proxy_balancer but you can only set a theorical server weight (for example : server1 70% of requests, server2 30% of requests). So we began to search for another solution that would do the load-balancing without any new hardware other than simple linux dedicated servers.

After several minutes where we hesitated between nginx and Squid, we actually decided to put nginx on a staging server… and that was wonderfull (even flabbergasting) !

The new setup is as follow :

• Debian Core2Duo 2.66Ghz with 2Gb RAM configured with nginx as a reverse proxy (with load-balancing),
• 2 Debian Quadri-Xeon 3.00Ghz with 8Gb RAM to handle two TomCat instances.

Here is my nginx config with the fair module which test the load on both servers before sending them the real request  :

worker_processes  1;
error_log  logs/error.log  notice;
pid        logs/nginx.pid;
events {
worker_connections  1024;
}

http {
include       mime.types;
default_type  application/octet-stream;
log_format lb '[$time_local] $remote_addr => $upstream_addr($upstream_status) in $upstream_response_time$
access_log  logs/lb.log lb;
sendfile        on;
tcp_nopush     on;
keepalive_timeout  0;
gzip  on;
upstream novacat {
server srv1.xxx.eu:8080;
server srv3.xxx.eu:8080;
fair;
}

server {
listen       80;
server_name  xxx.eu;
location / {
proxy_pass  http://xxx;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
proxy_set_header Host $http_host;
proxy_redirect false;
}
}
}

Some fellow PHP developpers built up a blog to provide everyone many tips & tricks on both language and how they differ : Rails for PHP developpers.

As the main author Mr Paul M. Jones is saying himself :

“This is a thorough and approachable introduction to Ruby and Rails for PHP programmers from fellow developers who are well-versed in both Ruby and PHP.”

All articles are pragmatic examples focusing on the behaviour of both languages. For example :

You can checkout the code and enter the community at warehouseapp@github or you can see a demo here.

Also take a look at the official site : http://warehouseapp.com/

All you need to correct this issue is going to Textmate Menu: Bundles -> Bundle Editor -> Show Bundle Editor -> Ruby on Rails -> Rails (HTML) and find the line :

fileTypes = ( 'rhtml' );

Now replace it with :

fileTypes = ( 'rhtml', 'erb' );

And you’re done.