jeremy suriel - tech notes

Duplicate Active Record with has_many relationships

Wed, 09 Sep 2009 08:07:30 -0400

old_model.find(old_model_id)
new_model = MyModel.new(old_model.attributes)
new_model.some_collection << old_model.some_collection.collect{|x| x.clone}
new_model.save

Rails DB Sharding & Replication - Data Fabric

Thu, 27 Aug 2009 11:16:59 -0400

Rails DB Sharding & Replication - Data Fabric:

Data Fabric has been great so far with our new project requiring horizontal partitioning.

We created this rakefile modification to help with db:migrate / db:rollback: http://gist.github.com/176353

Flash, Rails 2.3, Rack, and SWFUpload

Sat, 21 Feb 2009 09:32:16 -0500

Flash, Rails 2.3, Rack, and SWFUpload:

This article was a tremendous help in getting swfupload to work correctly with rails 2.3 and acts_as_authenticated.

http://blog.programmableweb.com/2009/02/09/yahoos-yql-adds-support-for-microformats/

Mon, 09 Feb 2009 10:29:03 -0500

http://blog.programmableweb.com/2009/02/09/yahoos-yql-adds-support-for-microformats/:

Good to see microformats getting more visibility.

T-SQL Update or Insert Logic

Wed, 18 Jun 2008 11:31:57 -0400

Greg’s Cool [Insert Clever Name] of the Day: T-SQL Update or Insert Logic -

Looks like I might have to pick up the book: The Rails Way

Fri, 01 Feb 2008 15:06:00 -0500

http://www.railsjitsu.com/the-rails-way-meet-your-new-bible

Burning .dmg to disk - not enough space

Wed, 23 Jan 2008 13:32:00 -0500

I had a problem where i had a 580mb dmg and wanted to burn to 700mb CDR… For some reason, Disk Utility prevented me from burning saying that the disk size wasn’t big enough. I ran the following command on a folder with the .dmg file and it converted it to an .iso. Disk Utility then allowed me to burn to the same CD:

hdiutil makehybrid -o isofilename folderwithdmg

This should create isofilename.iso which you should be able to burn with disk utility.

Sun To Acquire MySQL

Wed, 16 Jan 2008 08:20:48 -0500

Sun To Acquire MySQL:

Sun, please don’t screw this up…

Pagination and Rails 2.0

Thu, 10 Jan 2008 19:53:00 -0500

Pagination and Rails 2.0:

Since pagination has been removed from the rails 2.0 core framework, will_pagination plugin looks like a great alternative:

- http://errtheblog.com/posts/69-paginatin-christmas

- http://agilewebdevelopment.com/plugins/will_paginate

What's new in Rails 2.0

Tue, 08 Jan 2008 08:41:00 -0500

What's new in Rails 2.0:

http://weblog.rubyonrails.org/2007/12/7/rails-2-0-it-s-done

Things i like about Ruby

Tue, 08 Jan 2008 08:23:00 -0500

Rails

Installing mysql on leopard

Mon, 07 Jan 2008 16:38:00 -0500

- download and install mysql. do not run the preference or the startup packages.

(if you’ve already installed, right-click/remove the preference pane and run sudo rm -R /Library/StartupItems/MySQLCOM)

- put mysql in your path:

put this into your .bash_login

export PATH=”/usr/local/bin:/usr/local/sbin:/usr/local/mysql/bin:$PATH”
export ARCHFLAGS=”-arch i386″

- change root mysql password:

mysqladmin -u root password NEWPASSWORD

- If you need to access mysql through rails, install the mysql gem

sudo gem update —system

sudo gem update

sudo gem install mysql — —with-mysql-config=/usr/local/mysql/bin/mysql_config

Things I dislike about the Ruby programming language

Wed, 26 Dec 2007 12:54:00 -0500

Did some research on Cocoa and the new Ruby support in XCode over the holiday break. In general, I like Ruby’s simplicity and flexibility. But I do have some issues with aspects of the library implementation and a few object-oriented related design principals. I don’t plan to implement cocoa applications in objective-c, so using Ruby would serve as an easier way to get into Cocoa development using the latest XCode projects templates in leopard.

Discourages type-safety (although type-safe languages could result in better runtime performance)
Strings are not inherently based on UTF-8 (i have to import jcode / use $KODE)
For dates and times i have to be concered with 3 classes Time (which is based on c-libraries), DateTime and Date
No support for method overloading
Freezing classes still allows others to extend and override methods (unlike c# and java final keyword)
Creating an abstract method really is just creating a method that raises an error at runtime?
A class can only have 1 superclass. But you can have multiple module includes for a class (Mixins) …

AppleScript for Mail.app notifications with Address Book Image

Fri, 21 Dec 2007 19:56:00 -0500

I tried GrowlMail on Leopard with no luck. This script will use Growl to show email notifications with the sender name and subject along with the image of the person if it exists in your address book.

To install, make sure Growl 1.1.2 is installed and create a mail rule pointing to the following script. I saved the script to “~/Library/Scripts/Mail Scripts/Rule Actions/GrowlRule.scpt”

——-

on perform_mail_action(info)
tell application “Mail”
try
set NewMail to |SelectedMessages| of info

repeat with CurrentMessage in NewMail
set sub to subject of CurrentMessage as string
set sendr to sender of CurrentMessage as string

set sendrname to extract name from sendr
set sendremail to extract address from sendr

tell application “System Events” to set GrowlRunning to ((application processes whose (name is equal to “GrowlHelperApp”)) count)

tell application “Address Book” to set thePeople to (image of every person where value of every email of it contains sendremail)

if GrowlRunning is greater than or equal to 1 then
tell application “GrowlHelperApp”
— Make a list of all the notification types
— that this script will ever send:
set the allNotificationsList to {“Mail Notification”}

— Make a list of the notifications
— that will be enabled by default.
— Those not enabled by default can be enabled later
— in the ‘Applications’ tab of the growl prefpane.
set the enabledNotificationsList to {“Mail Notification”}

— Register our script with growl.
— You can optionally (as here) set a default icon
— for this script’s notifications.
register as application ¬
“Standard Mail Notification Script” all notifications allNotificationsList ¬
default notifications enabledNotificationsList ¬
icon of application “Mail.app”

if (count of thePeople) > 0 then
set TIFFdata to item 1 of thePeople
notify with name “Mail Notification” title sendrname description sub application name “Standard Mail Notification Script” image TIFFdata
else
notify with name “Mail Notification” title sendrname description sub application name “Standard Mail Notification Script” icon of application “Mail.app”
end if

end tell
end if

end repeat
on error the error_message number the error_number
display dialog error_message
end try
end tell
end perform_mail_action