Python FTW!

Note to self: Add mysql bin dir to path

Tue, 09 Mar 2010 01:25:28 +0800

When installing mysql gem in Ruby 1.9.1 (using rvm), the process keeps on failing even when specifying --with-mysql-dir=/usr/local/mysql etc. Apparently the solution is to add the /usr/local/mysql to $PATH before issuing the gem install command.

"Fail fast, fail open."

Mon, 01 Feb 2010 23:46:21 +0800

“Fail fast, fail open.”

SWFUpload + Rails == Invalid Authenticity Token

Tue, 19 Jan 2010 02:26:00 +0800

http://github.com/lardawge/swfupload-rails-authentication

openssl, eventmachine, and the ruby 1.8.7 (and ree, too) bus error

Wed, 06 Jan 2010 17:49:38 +0800

Rails 3 is going to require at least Ruby 1.8.7 so I decided to install Ruby Enterprise Edition on my Mac. I have OSX Leopard (10.5.8) and use macports. After installing rvm, I encountered the same problem whenever I executed my web server in my Rails app:

/usr/local/rvm/ree-1.8.7-2009.10/lib/ruby/1.8/openssl/ssl.rb:31: [BUG] Bus Error
ruby 1.8.7 (2009-06-12 patchlevel 174) [i686-darwin9.8.0], MBARI 0x8770, Ruby Enterprise Edition 2009.10

The culprit is that I have two openssl installations and the eventmachine gem isn’t compiled with the same openssl as the my REE install. This issue was reported here.

So the solution is either to recompile REE to use Macport’s openssl or recompile eventmachine to use the system’s openssl lib. I chose to recompile REE.

sudo rvm install ree --configure --enable-shared=true,--with-openssl-dir=/opt/local --debug

Symbian development on Linux and OS X

Sun, 04 Oct 2009 23:58:41 +0800

Symbian development on Linux and OS X

Adding Date And Time To Your Bash History

Fri, 04 Sep 2009 11:44:53 +0800

Adding Date And Time To Your Bash History:

export HISTTIMEFORMAT=”%h/%d - %H:%M:%S “

RailsAPI Textmate Bundle

Mon, 10 Aug 2009 11:43:23 +0800

RailsAPI Textmate Bundle:

Textmate bundle for viewing Rails documentation (using railsapi.com).

Moved to Tumblr

Mon, 10 Aug 2009 01:43:59 +0800

I migrated my stuff from Slicehost to tumblr. I started by backing up the contents of my slice to my laptop using rsync:

rsync -e ssh -avl --delete --stats --progress user@timmedina.com:/home/user backup

After everything was backed up, I deleted my slice, bought a .net domain, and configured my tumblr account to use custom domain names.

I’m still thinking of a way to organize my website. I’ll probably learn to create custom themes.

And I have to add commenting, too.

Tumblenote!

Tue, 04 Aug 2009 17:34:03 +0800

Tumblenote!

PL/Python cheatsheet with some tute links

Fri, 08 May 2009 11:42:00 +0800

PL/Python cheatsheet with some tute links

Postgresql Leopard Gotchas

Thu, 07 May 2009 10:12:00 +0800

Postgresql Leopard Gotchas:

After a fresh postgresql installation, initdb didn’t work until I reset the kern.sysv.shmall and kern.sysv.shmmax:

sudo sysctl -w kern.sysv.shmmax=134217728
sudo sysctl -w kern.sysv.shmall=65536

A Better ri

Fri, 24 Apr 2009 14:54:00 +0800

A Better ri

Debian Administration: Using GNU Screen

Wed, 22 Apr 2009 16:13:46 +0800

Debian Administration: Using GNU Screen :

screen
- Run a new screen session
screen -R
- Reattach to a previously detatched session
Ctrl-a c
- Create a new window.
Ctrl-a k
- Kill the current window - after confirmation
Ctrl-a Ctrl-a
- Switch to the other window
Ctrl-a S
- Split the current window in two.
Ctrl-a TAB
- Move between split sections of the screen.
Ctrl-a A
- Give the the current window a name.
Ctrl-a ”
- List all windows - move around to change the window with the arrow keys

Using Debugger in a Phusion Passenger Dev setup

Tue, 21 Apr 2009 10:16:36 +0800

Using Debugger in a Phusion Passenger Dev setup:

My setup: Rails 2.1.2, Passenger 2.2.1, ruby-debug 0.10.3

app-engine-patch -- ignoring mediagenerator

Mon, 20 Apr 2009 02:16:10 +0800

move the django admin media files from _generated_media/1/admin to some directory inside the PROJECT_DIR:

1. move the admin dir to desired location, say PROJECT_DIR/admin_media

2. modify app.yaml urls to point to that static_dir location, e.g. add

- url: /admin_media

static_dir: admin_media

3. modify the MEDIA_URL and ADMIN_MEDIA_PREFIX in settings.py

MEDIA_URL = “/media/”

ADMIN_MEDIA_PREFIX = “/admin_media/”

We need to override MEDIA_URL so that when we access the media_url path from the templates, we don’t get the altered media_url (settings_post.py alters this by appending the MEDIA_VERSION by interpolating the %s. ADMIN_MEDIA_PREFIX is also based on the MEDIA_URL, but we want it to use /admin_media.

Installed some stuff today

Mon, 20 Apr 2009 02:04:19 +0800

wxpython from http://www.wxpython.org/download.php Unicode py2.5 build

sqlalchemy 0.5.3 via easy_install

phusion passenger 2.2 and nginx (installed via passenger)

"All programmers are optimists. Perhaps this modern sorcery especially attracts those who believe in..."

Sat, 18 Oct 2008 11:58:54 +0800

“All programmers are optimists. Perhaps this modern sorcery especially attracts those who believe in happy endings and fairy godmothers. Perhaps the hundreds of nitty frustrations drive away all but those who habitually focus on the end goal. Perhaps it is merely that computers are young, programmers are younger, and the young are always optimists.”

- Frederick Brooks

Content Types in Rails Controllers and RSpec'ing It

Fri, 17 Oct 2008 15:57:00 +0800

From the to_csv plugin README, you can set the content type to text/csv in your rails controller action:

response.headers['Content-Type'] = 'text/csv; charset=iso-8859-1; header=present'
response.headers['Content-Disposition'] = "attachment; filename=users_#{Time.now.strftime("%m-%d-%Y")}.csv"

To RSpec this behavior, this works:

Then "the output should be a CSV" do
  response.headers["type"].should have_text('text/csv')
end

"If the cost premium for a more productive developer is less than the higher productivity of that..."

Fri, 29 Aug 2008 10:11:00 +0800

“If the cost premium for a more productive developer is less than the higher productivity of that developer, then it’s cheaper to hire the more expensive developer.”

- Martin Fowler

Chandler

Wed, 13 Aug 2008 02:58:09 +0800

Chandler:

A notebook you can organize, back up and share!