Show "Similar" Postings

Hi,

i use gf to let the User populate Postings. I want to prevent them to Post "similar Content" (like the "Similar Topics" Box here). Can i use something similar to show the User (dynamicle) such Postings?

joerg

Sorry, my english isn't good. I try it again. If I start a topic in this forum, then tests the forum if there is a similar topic already. I want a similar function for my form. Use the form to send user entries for the website and I'd like to suppress duplicate entries.

This is my form: http://www.gwinnr.de/ess-gewinnspiel-melden-2

After the User is chosing "Anbieter" i would to show postings with the same "Anbieter" in the box below.

Okay, i unterstand that there is no "out of the box" solution there. I try now to make my on solution and got one question: where can i modify a field with a "onChange" (Javascript) method?

okay ... i spend the last four hours on the problem and solved it. The trick was admin-ajax, a html Element in the form, some jquery code and a custom query in the functions.php.

You can close the topic

Happy holidays!

okay .... here comes some code. The code needs additionaly security checks! (proof the _POST Variable!)

function.php (called by the javascript code)

function AjaxSimilar(){
  //get the data from ajax() call
   $anbieter = $_POST['anbieter'];
   $query = new WP_Query( array( 'taxonomy'=>'anbieter', 'anbieter' =>  $anbieter) );
   while ( $query->have_posts() ) :
	$query->the_post();
	$results = $results .'<li>'.get_post_meta(get_the_ID(), 'einsendeschluss', true). ' - <strong>'.$anbieter.'</strong>  - ' . get_the_title() . '</li>'; 

   endwhile;
   if (!$query->have_posts())
   {
    $results = '<strong>No posts</strong>';
   }
    die($results);
  }
  // creating Ajax call for WordPress
   add_action( 'wp_ajax_nopriv_AjaxSimilar', 'AjaxSimilar' );
   add_action( 'wp_ajax_AjaxSimilar', 'AjaxSimilar' );

Javascript (header.js.php in my template)

$( document ).ready( function( $ ) {
   $('.anbieter').bind('change', function (){
      jQuery.ajax({
  type: 'POST',
  url: 'http://www.gwinnr.de/wp-admin/admin-ajax.php',
  data: {
  action: 'AjaxSimilar',
  anbieter: $('.anbieter div').find('span').text(),
  },
  success: function(data, textStatus, XMLHttpRequest){
   $('.similarbox').html('');
   $('.similarbox').append(data);

  },
  error: function(MLHttpRequest, textStatus, errorThrown){
  alert(errorThrown);
  }
  });
  });

In my example i build a html form with the css class "similarbox" and a select with advanced controller with the css class "anbieter"

The result is visible at http://www.gwinnr.de/ess-gewinnspiel-melden-2