post code

Make your own IM bot in Ruby

The following code was copied from the article 'Make your own IM bot in Ruby, and interface it with your Rails app' [rubypond.com].

installation:

git clone git://github.com/ln/xmpp4r.git xmpp4r
cd xmpp4r
rake gem:install
sudo gem install xmpp4r-simple

connect:

require 'rubygems'  
require 'xmpp4r-simple'
messenger = Jabber::Simple.new('my-bot@gmail.com', "bot-password")

send:

messenger.deliver("a-real-person@gmail.com", "Why hello there Mr. Person, your bot is here now!")

listen:

while true
  messenger.received_messages do |msg|  
    puts msg.body  
    messenger.deliver("a-real-person@gmail.com", "Got your message, thanks!")  
  end  
  sleep 2  
end

at your service:

require 'rubygems'  
require 'xmpp4r-simple'
messenger = Jabber::Simple.new('my-bot@gmail.com', "bot-password")
while true
  messenger.received_messages do |msg|
    user = User.find_by_im_name(msg.from)
    if user
      case msg.body
      when /^help /i
        messenger.deliver(msg.from, "Valid commands are......")  
      when /^status /i
        user.status = msg.body.sub(/^status /i)
        user.save
        messenger.deliver(msg.from, "Thanks #{user.first_name}, your status has been updated")  
      when /^balance\?/i
        messenger.deliver(msg.from, "#{user.first_name}, your current remaining balance is #{user.remaining_balance}")  
      else
        messenger.deliver(msg.from, "Sorry #{user.first_name}, I didn't understand that. Message me with 'help' for a list of commands")  
      end
    else
      messenger.deliver(msg.from, "Sorry, but we've not got this account registered on our system. Sign-up or update your details at http://www.mysite.com/")  
    end    
  end  
  sleep 2  
end

to ruby post xmpp jabber send connect Im bot receive by jrobertson on Jun 29, 2008

A simple XHTML submit form for ProjectX

Preparing ProjectX API requests through the browser's address bar can get quite messy, however inputting the request through a simple form makes it much easier to read.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
  <head>
    <title>ProjectX API</title>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
  </head>
  <body>
    <h1>ProjectX API form</h1>
    <p>Enter the Project API XML to send a request to the server.</p>
    <form action="http://rorbuilder.info/api/projectx.cgi" method="post" id="projectx_form">
    <fieldset><legend>xml_project</legend><textarea id="xml_project" name="xml_project" cols="104" rows="20"></textarea></fieldset>
    <div><button type="submit">Submit</button></div>
    </form>
  <p>
    <a href="http://validator.w3.org/check?uri=referer"><img
        src="http://www.w3.org/Icons/valid-xhtml10"
        alt="Valid XHTML 1.0 Strict" height="31" width="88" style="float:right;  border:0 "/></a>
  </p>
  <p style="clear:float">last updated: 13th April 2008</p>
  
  </body>
</html>

The web page can be seen at http://rorbuilder.info/r/projectx-api/index.html
The following XML request value when submitted should return an XML result containing the results and the method executed.

<project name='whiteboardqueue'>
  <methods>
    <method name='get_user_id'>
      <params/>
    </method>
  </methods>
</project>

eg.

<result method="rtn_get_user_id">
  <get_user_id>36539</get_user_id>
</result>

to html form post get xhtml action api method projectx by jrobertson on Apr 13, 2008

'Delete a Twitter entry' dissected

The following code was copied from my Twitter home page, it shows how to delete a twitter entry on the server.

raw HTML code with embedded JavaScript code.


<a href="/status/destroy/719423092" onclick="if (confirm('Sure you want to delete this update? There is NO undo!')) 
{var f = document.createElement('form'); f.style.display = 'none'; this.parentNode.appendChild(f); f.method = 
'POST'; f.action = this.href;var m = document.createElement('input'); m.setAttribute('type', 'hidden'); 
m.setAttribute('name', '_method'); m.setAttribute('value', 'delete'); f.appendChild(m);var s = 
document.createElement('input'); s.setAttribute('type', 'hidden'); s.setAttribute('name', 'authenticity_token'); 
s.setAttribute('value', 'd0057265c3784d2a6dc6cdb2c26083f638152151'); f.appendChild(s);f.submit(); };return false;" 
title="Delete this update?">

same code as above but with comments.

<a href="/status/destroy/719423092" onclick="

                     // if the user clicks the 'OK' button the confirm function will return true
if (confirm('Sure you want to delete this update? There is NO undo!')) { 

  // -- dhtml: creating html elements on-the-fly -------------------------------
  var f = document.createElement('form'); // create the dhtml 'form' (<form/>) element
  f.style.display = 'none';               // hide the form
  this.parentNode.appendChild(f);         // append the form element to the parent of the current node (<a/>)
  f.method = 'POST';                      // add the method to the form
  f.action = this.href;                   // add the action using the href of the current node (<a/>)
    
  var m = document.createElement('input');   // create the input (<input/>) 'element' 
  m.setAttribute('type', 'hidden');          // set the input type to 'hidden'
  m.setAttribute('name', '_method');         // set the input name to '_method'
  m.setAttribute('value', 'delete');         // set the input value to 'delete'
  f.appendChild(m);                          // append the input element to the form element
  
  var s = document.createElement('input');   // create another input element
  s.setAttribute('type', 'hidden');          // set the type to 'hidden'
  s.setAttribute('name', 'authenticity_token'); // set the name to 'authenticity_token'
  
                                     // set the input element's value using a unique id.
  s.setAttribute('value', 'd0057265c3784d2a6dc6cdb2c26083f638152151'); 
  
  f.appendChild(s);                  // apend the input element to the form element
  // -- end of dhtml: creating html elements on-the-fly -------------------------------
  
  f.submit(); // post the form data back to the server to delete the record, 
              // just as if the user had pressed the submit button.
};

  return false; // returning false cancels the default <a href="..."> request. 
                 // However if JavaScript had been disabled for some reason the 
                 // <a href="..."> would have acted normally, meaning the record 
                 // would have been deleted from following the URL request directly.
 "

Note: Twitter needs JavaScript for the web page to work properly, I've tried and it is not possible to delete a record without JavaScript. The authenticity_token has been altered by me to prevent any malicious activity on my Twitter account.

to javascript form input post dhtml delete twitter hidden by jrobertson on Feb 16, 2008

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Make your own IM bot in Ruby

A simple XHTML submit form for ProjectX

'Delete a Twitter entry' dissected