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My first Ruby programming question :-)

Hello, I'm pleased to be here by way of the html forum. I've been using php for static pages for 18 months. I wanted to learn rails, but I just realized that I could configure my host to automate index.rhtml files just like php. This is a major motivator for me to learn Ruby, and after a few more months I can start fresh with Rails. OK, here is the code that works in PHP, and what I've got so far in Ruby. The JS effect can be viewed here: http://listenlight.net/13 ---

<?php



  $i = 0; $n = 0;

  

  $str = "listenlightpoetryjournal";

  

  while( $str[$i] != "" ) {

    echo("<span id=\"n".$n++."\" style=\"position:relative; visibility: hidden; font-size: normal; top:".(rand(-18, 18))."px; color: black;\">".$str[$i]."</span>");

  

    $i++;

  }



  

?>

  <%   

  def banner

      str = "listenlightpoetryjournal"

      i, n = 0, 0

    until c = str[i] == nil 

        line = "<span id=\"n", n, "\" style=\"position: relative; font-size: normal; top:", rand(36) - 18, "px;\">", c, "</span>"

        i += 1

        n += 1 

        output = output, line

    end

  end

   %>

   

   <%= banner  %>

In the Ruby example, I've set the visibility attribute in the CSS, attempting to clean the markup. Also, is there a way to do a parallel incrementing?--such as a, b += 1, 1 (?)

Re: My first Ruby programming question :-)

My solution ---

  <%=

      def banner

        i, n, span, str = 0, 0, String.new, "listenlightpoetryjournal"

        until i == str.length do

          span << "<span id=\"n" << n.to_s << "\" style=\"top: " 

                << (rand(36) - 18).to_s << "px;\">" << str[i] << "</span>"

          i, n = i + 1, n + 1

        end 

        return span

      end

      banner

  %>

No more PHP for this one.

Re: My first Ruby programming question :-)

Quote:

Originally Posted by tefflox (Post 498336)

My solution ---

  <%=

      def banner

        i, n, span, str = 0, 0, String.new, "listenlightpoetryjournal"

        until i == str.length do

          span << "<span id=\"n" << n.to_s << "\" style=\"top: " 

                << (rand(36) - 18).to_s << "px;\">" << str[i] << "</span>"

          i, n = i + 1, n + 1

        end 

        return span

      end

      banner

  %>

No more PHP for this one.

Although your solution is fine it can be a little more readable (and re-usable) in rails.

In the controller:

def banner(text)

        span = String.new

        text.split(//).each_with_index do |c, i| 

                span += "<span id='#{i}' style='top:#{(rand(36)-18)}px;'>#{c}</span>\n"

        end

        span

end

Then in the view

<%= banner("listenlightpoetryjournal") %>

Re: My first Ruby programming question :-)

pty's improvement is a good one!

The only nit I have with it is that I wouldn't put the

banner

method in the controller, since it has nothing to do with the "traffic cop" jobs that controllers normally do. I would put it in a helper file, either this controller's helper file or the

application_helper.rb

file (if it's a method you'd want to use in other controllers).

Ed

Re: My first Ruby programming question :-)

thanks. i appreciate the direction on working with strings, but it's only for static pages. i'm not using the rails framework. i just wanted to make it concise.

Re: My first Ruby programming question :-)

Quote:

Originally Posted by eruder (Post 501855)

pty's improvement is a good one!

The only nit I have with it is that I wouldn't put the

banner

method in the controller, since it has nothing to do with the "traffic cop" jobs that controllers normally do. I would put it in a helper file, either this controller's helper file or the

application_helper.rb

file (if it's a method you'd want to use in other controllers).

Ed

Thanks Ed :)