Srikanth Jeeva's technical Blog

Hi, To clear the error ,make the followning change, changed line no. 51 in asset_packager/lib/synthesis/asset_packager_helper.rb err line : source = "#{ActionController::Base.asset_host}#{@controller.request.relative_url_root}#{source}" changed_to : source = "#{ActionController::Base.asset_host}#{ActionController::Base.relative_url_root}#{source}"

Get Public Key: ssh-keygen -t rsa Set Username: git config --global user.name "srikanth" git config --global user.email "sri.jjhero@gmail.com"

Hi, Just surfed through how to implement a multiple language App, & got this from google Translate.. Just add this code in your HTML Layout. <div id="google_translate_element"></div><script> function googleTranslateElementInit() { new google.translate.TranslateElement({ pageLanguage: 'en' }, 'google_translate_element'); } </script><script src="http://translate.google.com/translate_a/element.js?cb=googleTranslateElementInit"></script> PTS: This works only inside the app, & not in a HTML file. Source : http://translate.google.com/translate_tools?hl=en Thanks, Srikanth

I have gone through many examples for multiple select like this. & what worked for me is i have given below, http://www.box.net/shared/9lo1g8p3ei Download the Js & Css from the above link. Create a HTML file like this, <script src="javascripts/moo.js" type="text/javascript"></script> <script src="javascripts/multi_transfer.js" type="text/javascript"></script> <link rel="stylesheet" type="text/css" href="stylesheets/multiple.css" /> <table> <tr> <td align="center"> <div class="holder" > <p>Exam List</p> <select multiple="multiple" id="select1" name="select1[]"> <option value="1">one1</option> <option value="2">one2</option> <option value="3">one3</option> <option value="4">one4</opt...

This is how we add Favicon in a webpage, <link rel="SHORTCUT ICON" href="/images/favicon.ico" type="image/x-icon"></span> Thanks, Srikanth

sudo gem sources -a http://gems.github.com/ sudo gem sources -a http://gems.rubyonrails.org/

hi i am using 'actionwebservice' for passing SOAP requests. Version 2.3.2 for actionwebservice is " datanoise-actionwebservice" For installing the gem when i used, gem install datanoise-actionwebservice got this error, ERROR: could not find gem datanoise-actionwebservice locally or in a repository & found this is the right way to install gem install datanoise-actionwebservice --source http://gems.github.com Add this line to your config/environment.rb file in the initializer section: config.gem 'datanoise-actionwebservice', :lib => 'actionwebservice' Generating API controller ActionWebService gem includes web_service generator that you can use like this: $ ./script/generate web_service post Define your API Open app/services/post_api.rb file and add methods that your service exposes: class PostApi [[:string]] end API implementation We are going to use direct dispatching mode, so all methods that implement our API go di...

Wondered how to do it,, & did it Using offset: sql: SELECT * FROM foo WHERE id = 4 OFFSET 1

Hi, I was wondering how to sort a table. I got this plugin & did it in 10 mins. Here is an useful plugin in jquery, Reference URL : http://tablesorter.com/docs/#Download Table sorting is pretty much easier using this tablesorter plugin. Thanks, Srikanth

Source : http://www.cyberciti.biz/faq/mysql-change-root-password/ mysqladmin command to change root password If you have never set a root password for MySQL, the server does not require a password at all for connecting as root. To setup root password for first time, use mysqladmin command at shell prompt as follows: $ mysqladmin -u root password NEWPASSWORD However, if you want to change (or update) a root password, then you need to use following command $ mysqladmin -u root -p'oldpassword' password newpass For example, If old password is abc, and set new password to 123456, enter: $ mysqladmin -u root -p'abc' password '123456' Change MySQL password for other user To change a normal user password you need to type (let us assume you would like to change password for vivek): $ mysqladmin -u vivek -p oldpassword password newpass Changing MySQL root user password using MySQL sql command This is another method. MySQL stores username and passwords in user t...

Reference : http://charlesmaxwood.com/ruby-on-rails-restful-links-when-you-dont-know-the-class/ Example : restful routes: map.resources :users map.resources :groups Model Relation: class Post < ActiveRecord::Base belongs_to :owner , :polymorphic => true end class User < ActiveRecord::Base has_many :posts , :as => :owner end class Group has_many :posts , :as => :owner end Now, let’s say that when you show a post, you want to provide a link to the owner of the post when you display it on its show page. You know that because you’ve provided the restful routes in your config/routes.rb file as show above, you get the nice functionality of the user_path and the group_path methods. The problem is that because you don’t know if @post.owner is a user or a group. Documentation : http://railsbrain.com/api/rails-2.3.2/doc/index.html?a=M000261&name=polymorphic_path Thanks, Srikanth

>>> print "Before %s After" % 7 Before 7 After >>> print "Before %x After" % 15 Before f After >>> print "Foo %04d Bar" % 3*3 Foo 0009 Bar

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http://docs.jquery.com/Downloading_jQuery#Current_Release current version of jquery can be downloaded here.

require 'base64' puts Base64.decode64("aG1hYw==").chomp => hmac puts Base64.encode64("hmac").chomp => aG1hYw==

require 'rubygems' require 'active_merchant' # Use the TrustCommerce test servers ActiveMerchant::Billing::Base.mode = :test # ActiveMerchant accepts all amounts as Integer values in cents # $10.00 amount = 1000 # The card verification value is also known as CVV2, CVC2, or CID credit_card = ActiveMerchant::Billing::CreditCard.new( :first_name => 'Bob', :last_name => 'Bobsen', :number => '349298720353895', :month => '8', :year => '2012', :verification_value => '1234' ) puts credit_card.valid?

require 'socket' def local_ip orig, Socket.do_not_reverse_lookup = Socket.do_not_reverse_lookup, true # turn off reverse DNS resolution temporarily UDPSocket.open do |s| s.connect '64.233.187.99', 1 s.addr.last end ensure Socket.do_not_reverse_lookup = orig end p= local_ip puts p

>> Date::MONTHNAMES[1] => "January" some other date methods: Date::ABBR_DAYNAMES Date::ABBR_MONTHNAMES Date::DAYNAMES Thanks, sri..

Adding data in add column class AddPeopleSalary def self.up add_column :people, :salary, :integer Person.reset_column_information Person.find(:all).each do |p| p.update_attribute :salary, SalaryCalculator.compute(p) end end end

hi, Amazon is Doing a great job in rails Payments. here is the ruby code for generation of button. require 'base64' require 'openssl' module PayNowWidgetUtils def generate_signed_form(access_key, aws_secret_key, form_params) form_params['accessKey'] = access_key str_to_sign = "" form_params.keys.sort.each { |k| str_to_sign += "#{k}#{form_params[k]}" } digest = OpenSSL::Digest::Digest.new('sha1') hmac = OpenSSL::HMAC.digest(digest, aws_secret_key, str_to_sign) form_params['signature'] = Base64.encode64(hmac).chomp signed_form = STARTFORM form_params.each do |key, value| next unless key and value signed_form += FORMELEM end signed_form += ENDFORM...

require 'date' class Date def self.last_day_of_the_month yyyy, mm d = new yyyy, mm d += 42 # warp into the next month new(d.year, d.month) - 1 # back off one day from first of that month end def self.print_sundays(d1, d2) d1 +=1 while (d1.wday != 0) d1.step(d2, 7) do |date| puts "#{Date::MONTHNAMES[date.mon]} #{date.day}" end end end date = Date.today month = date.strftime("%m").to_i year = date.strftime("%Y").to_i last_date = Date.last_day_of_the_month(year, month) l_date = last_date.strftime("%d").to_i Date.print_sundays(Date::civil(year, month, 1), Date::civil(year, month, l_date))

Jump to the top of a page http://www.dynamicdrive.com/dynamicindex5/jumptop.htm this will help in making a top link in each page.

MYSQL_HOST, MYSQL_USER, MYSQL_PASS, MYSQL_DB_NAME = 'localhost', 'root', '', 'artiklz_development' @@dbh = Mysql.real_connect(MYSQL_HOST, MYSQL_USER, MYSQL_PASS, MYSQL_DB_NAME)

1. For domains: ping "domain name" 2. For urls, use the following.. def check_valid_link(link_url) retrycount = 0 begin res = Net::HTTP.get_response(URI.parse(link_url)) if res.code =~ /2|3\d{2}/ return true else return false end rescue Timeout::Error if retrycount retrycount += 1 sleep 3 retry else return false end rescue return false end end

.ruby_inline/Inline_ImageScience_aa58.c:2:23: error: FreeImage .h: No such file or directory getting such an error?? just install freeimage, http://www.urbanpuddle.com/articles/2008/01/22/install-freeimage-imagescience-on-ubuntu-gutsy#comments the above link will guide u in installing.. thanks,

hi, I have more than 200 E-Books, in all Programming languages. If any one need it, mail me in sri.jjhero@gmail.com

"report"},{:method => :post, :onSubmit => "return isNumeric(document.getElementById('premium_user'))"})%>

hi, any work under csv?? here s something interesting which makes ur csv work easier. http://fastercsv.rubyforge.org/ Thanks.

hi, joining multiple arrays is easy using "+" we can do that using a single method as follows, class Array def concat_multi *lists lists.each {|list| self.concat(list) } end end a = [1, 2, 3] b = [4, 5, 6] c = [7, 8, 9] d = [10, 11] a.concat_multi(b, c, d) p a

require'rubygems' => true require'time' => true a="Thu Feb 19 18:16:33 +0530 2009" => "Thu Feb 19 18:16:33 +0530 2009" a=Time.parse(a) => Thu Feb 19 18:16:33 +0530 2009 a.day => 19 a.year => 2009 a.month => 2 a.hour => 18 a.min => 16 a.sec => 33 thanks..

hi, wanna find whether a day is week day or not?? i have tried tht here. , date=date.today [0,6].include?(date.wday) ------------------------------------------------------------------------ require 'date' class Date def weekend? self.wday == 0 || self.wday == 6 end end d1 = "9 December 2008" d2 = "13 December 2008" p Date.parse(d1).weekend? # false p Date.parse(d2).weekend? # true ------------------------------------------------------------------------ I have used the code for calculation of weekdays between 2 dates., require 'date' d1 = Date.new( 2008, 11, 1 ) d2 = Date.new( 2008, 12, 31 ) WEEKDAY_NUMBERS = [1,2,3,4,5] weekdays = (d1..d2).select{ |d| WEEKDAY_NUMBERS.include?( d.wday ) } p weekdays.length ----------------------------------------------------

hi, i have displayed an array as rss feeds, using rails.. here s the code.. In the controller, h={} h[:summary] =summary h[:description]=description h[:dtstart]=dtstart.to_s h[:url]=url @arr render :layout =>false response.headers["Content-Type"]= "application/xml; charset=utf-8" In the View file., Filename is , *.rxml xml.instruct! xml.rss "version" => "2.0", "xmlns:dc" => "http://purl.org/dc/elements/1.1/" do xml.channel do |feed| feed.title("My great blog!") feed.description("description") feed.link("ur url link") @arr.each { |p| feed.item do |item| item.title p[:summary] item.description p[:description] item.link p[:url] item.pubdate p[:dtstart] end } end end now it is displayed as xml feed in the view file.. Thanks .

hi, here is the ical specifications listed by wiki.. http://upload.wikimedia.org/wikipedia/en/c/c0/ICalendarSpecification.png Thanks.

hi, i have done the same rss to ical ,vise-versa using vpim gem.. here is the gem home.. http://vpim.rubyforge.org/ This is my code.. require 'rubygems' require 'vpim/icalendar' require'feed_tools' require'digest/md5' feed = FeedTools::Feed.open("http://rss.cnn.com/rss/edition_world.rss") cal = Vpim::Icalendar.create2 feed.items.each do |item| cal.add_event do |e| e.dtstart item.time e.dtend item.time e.summary item.title.to_s e.description item.description.to_s e.url item.link e.uid Digest::MD5.hexdigest("#{item.title} #{item.link}") e.access_class "PUBLIC" e.transparency 'OPAQUE' now = Time.now e.created now e.lastmod now e.organizer do |o| o.cn = "Example Organizer, Mr." o.uri = "mailto:organizer@example.com" end end end icsfile = cal.encode f=File.open('2.ics','w') f.write(icsfile) put...

hi, first execute the rss to ical converter, store it in a file, then use this script, to convert it into rss. require 'rubygems' require 'net/http' require 'uri' require 'time' class Time def self.gcalschema(tzid) # We may not be handling Time Zones in the best way... tzid =~ /(\d\d\d\d)(\d\d)(\d\d)T(\d\d)(\d\d)(\d\d)Z/ ? # yyyymmddThhmmss Time.xmlschema("#{$1}-#{$2}-#{$3}T#{$4}:#{$5}:#{$6}") : nil end end class ICal attr_accessor :hash, :raw def initialize(ical_data) self.raw = ical_data self.hash = self.parse_ical_data(self.raw) end def parse_ical_data(data) data.gsub!(/\\\n/, "\\n") data.gsub!(/[\n\r]+ /, "\\n") lines = data.split(/[\n\r]+/) structure = [{}] keys_path = [] last_is_array = false lines.each do |line| line.gsub!(/\\n/, "\n") pair = line.split(':') name = pair.shift ...

hi, this program gets the rss feed using the feed_tools gem. then converts into ical. then i ve written it in a file. hope it will be useful. require'rubygems' require'feed_tools' require'digest/md5' require 'icalendar' require 'date' feed = FeedTools::Feed.open("http://timesofindia.indiatimes.com/rssfeeds/-2128932452.cms") cal = Icalendar::Calendar.new cal.custom_property("METHOD","PUBLISH") feed.items.each do |item| event = Icalendar::Event.new event.url=item.link event.uid=Digest::MD5.hexdigest("#{item.title} #{item.link}") event.dtstart = item.time.strftime("%Y%m%dT%H%M%S") event.dtend = item.time.strftime("%Y%m%dT%H%M%S") event.summary = item.title.to_s event.description = item.description.to_s event.klass = "PUBLIC" cal.add_event(event) end ical= cal.to_ical f=File.open("rss2ical.ics","w") f.write(ical) puts ical.to_html

hi.. Ruby has this gem, to find google page rank of a site......, just install the gem. >>> sudo gem install googlepagerank >>> example program: require "rubygems" require "googlepagerank" puts GooglePageRank.get("www.yahoo.com") => 9 u can check the above in the site, for further info. http://googlepagerank.rubyforge.org/ thanks..