Thursday, November 29, 2007

Calculating Time difference in Ruby

require 'date'
now = DateTime.new
date = Date.new
p now.strftime("%Y-%m-%d %I:%M:%S").to_s
p Time.now.strftime("%Y-%m-%d %I:%M:%S").to_s
dif = DateTime.parse(Time.now.strftime("%Y-%m-%d %I:%M:%S").to_s)-DateTime.parse("2007-9-12 14:07:00")
hours, mins, secs, ignore_fractions = Date::day_fraction_to_time(dif)
p hours * 60 * 60 + mins * 60 + secs

Tuesday, November 20, 2007

Pdf-writer -- Images in simple table

When using pdf-writer using ruby programming language, simple table always gives option of using text in the rows. I did not have an option to use images inside simple table as it uses data as

attr_accessor :data
# An array of Hash entries. Each row is a Hash where the keys are the
# names of the columns as specified in #column_order and the values are
# the values of the cell.

The following is the code change in simpletable.rb file is required to use images in respected cells.

line : 647
if(line.match("::Image"))
pic = line.gsub("::Image","")
line = pdf.add_image_from_file(pic,pos[name], pdf.y-5, @image_width)
line =""
else
line = pdf.add_text_wrap(pos[name], pdf.y,
max_width[name], line,
@font_size, just)
end


Note: Make sure that text should have "::Image" and remaing text is the path of the image .

like

data[i]["Q1Image"] ="::Image"+Dir.getwd+"/public/images/status_#{p.status_q1_image}.jpg"

For more information please post your comments.

Tuesday, May 01, 2007

Ruby and Related Links

http://www.oreillynet.com/ruby/blog/2006/05/post.html
(Zed on Ruby, Rails, Mongrel, and More)
Rails:
http://www-128.ibm.com/developerworks/java/library/j-cb08016/

Rails Deployment:
http://blog.duncandavidson.com/2005/12/deploying_rails.html
http://www.infoq.com/news/2006/12/deploy-rails-on-iis

Rails Migrations:
http://glu.ttono.us/articles/2005/10/27/the-joy-of-migrations
http://garrettsnider.backpackit.com/pub/367902

Scriptaculous Rails:
http://script.aculo.us/
http://www.juixe.com/techknow/index.php/2006/08/12/scriptaculous-rails/

Rest:
http://www.b-simple.de/documents

Second Life:
http://secondthoughts.typepad.com/second_thoughts/2006/06/getting_started.html
http://nwn.blogs.com/

Design Patterns:
http://www.dofactory.com/Patterns/Patterns.aspx

Agile SD:
http://www.adaptivesd.com/articles/cross_oct02.pdf

Sunday, January 14, 2007

Arjun Singh and the Love Goddess!

So what does the Love Goddess have to do with Arjun Singh and with reservations? As the Indian government, at the behest of Arjun Singh, rolled out yet another short sighted policy to deal with the horrible caste system, we found out about some other activities of Arjun Singh.