jeremyf.github.com

Pretty Output for irb and script/console

2009-07-22T00:00:00-07:00

Rather simple means of adding pretty output to irb

Get the hirb gem

    sudo gem install cldwalker-hirb --source http://gems.github.com

Configure ~/.irbrc

    require 'rubygems'
    require 'hirb'
    Hirb.enable
    extend Hirb::Console

Look at the output

    >> Site.find(:first)
    +----+-----------+-----------+-----------+-----------+-----------+
    | id | name      | domain    | site_s... | create... | update... |
    +----+-----------+-----------+-----------+-----------+-----------+
    | 1  | Web Group | webgro... | 1         | 2007-0... | 2008-0... |
    +----+-----------+-----------+-----------+-----------+-----------+
    1 row in set
    >>

This makes me happy. A prettier output for Ruby objects. For more information, see http://github.com/cldwalker/hirb/tree/master

Rails Subdomain caching

2009-05-28T00:00:00-07:00

Today I spent some time implementing caching in a Rails application that makes use of subdomains.
With a quick bit of google-fu, I stumbled upon Nathaniel Bibler’s post.
A very informative guide, however, the apache rewrite rules proved to be a bit more involved. In addition, the shennagans of the subdomain seemed a little unnecessary, so I opted for host instead of subdomain. The changes are below.

    class ApplicationController < ActionController::Base  
      private
      def cache_page_with_host(content = nil, options = nil)
        path = case options
          when Hash
            url_for(options.merge(:only_path => true, :skip_relative_url_root => true, :format => params[:format]))
          when String
            options
          else
            request.path
        end
        cache_page_without_host(content, File.join("/#{request.host}/", path == "/" ? 'index.html' : path))
      end
    end

Apache Config

RewriteEngine On

# Rewrite rule to check for host cached pages.
# This will check the file system for a cached copy, if that exists
# use the static cached page. 
# The [QSA,L] is very important. See http://httpd.apache.org/docs/2.2/mod/mod_rewrite.html#rewriteflags
RewriteCond %{DOCUMENT_ROOT}/cache/%{HTTP_HOST}/index.html -f
RewriteRule ^/$ /cache/%{HTTP_HOST}/index.html [QSA,L]
RewriteCond %{DOCUMENT_ROOT}/cache/%{HTTP_HOST}/%{REQUEST_URI}.html -f
RewriteRule ^(.*)$ /cache/%{HTTP_HOST}/$1.html [QSA,L]

First Post and in all likelihood the last.

2009-05-19T00:00:00-07:00

I have begun to explore using Jekyll and Github pages. Oh github I <3 you.

git add --patch file.name

2008-04-08T00:00:00-07:00

I would highly recommend reading “this post”:http://tomayko.com/writings/the-thing-about-git, it highlights yet another awesome feature of git. Git lets you do your work how you do it, instead of how the SCM says you should. Here is a great example. I have a hopelessly muddled set of changes in filetheother.txt. The changes are for two (or more) different purposes, and I need to only push a portion of it. Enter git add --patch. I can go through each diff element and select to put it in the queue (the Index) for what will be committed.

  $ git add --patch file_the_other.txt 
  diff --git a/file_the_other.txt b/file_the_other.txt
  index 2120d21..e3aa90d 100644
  --- a/file_the_other.txt
  +++ b/file_the_other.txt
  @@ -1,3 +1,6 @@
  +World is here
   A file like another file, but with different content.

  -There is even more content here.
  \ No newline at end of file
  +There is even more content here.
  +
  +Hello World
  \ No newline at end of file
  Stage this hunk [y/n/a/d/s/?]?