DZone Snippets: Mcarr's Code Snippets

create an array or split a long string seperated by tabs newlines carriage returns and commas.

mcarr (matt) — Sat, 09 Jun 2007 00:48:09 GMT

create an array or split a long string seperated by tabs newlines carriage returns and commas.

EG

emails = "skdjf@sdklfj.com sdflj@kj.com sldfj@klj.com, slkj@kjl.com,lskjdf@lkj.com, \r\nlkjkjl@kjk.com"

becomes

=> ["skdjf@sdklfj.com", "sdflj@kj.com", "sldfj@klj.com", "slkj@kjl.comlskjdf@lkj.com", "lkjkjl@kjk.com"]



emails = emails.split(/,/).join().split()

hide credit card numbers

mcarr (matt) — Thu, 17 May 2007 00:17:18 GMT

// hide all digits of a credit card number except the last 4. eg

// cc = "12345678901123456"
// hide_card_number(cc)
// [ "************3456" ]



  def hide_card_number(card_number)

    size = card_number.to_s.size - 1

    cc = "" 

    i = 0

    0.upto(size) do 

      if( i > size - 4 )

      else

        cc += "*" 

      end

      i += 1

    end

    cc = cc + card_number[size-3, size].to_s

    return cc 

  end

Ajax style radio buttons

mcarr (matt) — Wed, 11 Apr 2007 21:16:08 GMT

Ajax radio buttons. update the page div when a radio button is pressed.





        

      Sign-up

        

   <% form_for :radio_join, :html => { :id => 'radio_join' } do %>

      <%= radio_button_tag :join_page, :member %> Member

      <%= radio_button_tag :join_page, :model %> Model

      <%= radio_button_tag :join_page, :photographer %> Photographer

    <% end -%>

<% form_for :user, @user, :url => {:action => 'save_free'} do |user_form| -%>

        

    <%= render :partial => 'common/user_form', :object => user_form %>

                

        <%= submit_tag 'JOIN', :class => 'inputSubmit' %>

                

      


      


        

  <% end -%>



     

<%= observe_form :radio_join, :url => { :action => 'choose_page' }, :update => "join", :complete => "Element.show('join')", :frequency => "0.25" %>