Symfony Form widget to manage many-to-many relationship

sfWidgetFormChoiceAutocomplete

<?php
/**
 * sfWidgetFormChoiceAutocomplete represents a multiple select displayed as an autocomplete input and a list of checkboxes.
 *
 *
 * @package    symfony
 * @subpackage widget
 * @author     Gerald Estadieu <gestadieu@usj.edu.mo>
 * @version    
 */
class sfWidgetFormChoiceAutocomplete extends sfWidgetForm
{
  /**
   * Constructor.
   *
   * Available options:
   *
   *  * choices:            An array of possible choices (required)
   *  * source:             url, array of data or javascript function (required)
   *  * template:           The HTML template to use to render this widget
   *                        The available placeholders are:
   *                          * class
   *                          * autocomplete
   *                          * list
   *
   * @param array $options     An array of options
   * @param array $attributes  An array of default HTML attributes
   *
   * @see sfWidgetForm
   */
  protected function configure($options = array(), $attributes = array())
  {
    parent::configure($options,$attributes);	
    $this->addRequiredOption('choices');
    $this->addRequiredOption('source');

    $this->addOption('list_options',array());
    $this->addOption('help','Search here...');
    $this->addOption('config', '{ }');

    $this->addOption('template',<<<EOF
<div class="%class% ui-widget">
	<div class="%class%_autocomplete">
		%autocomplete%
	</div>
	<div class="%class%_list" id="%id%_list">
		%list%
	</div>
</div>
EOF
);
  }

  /**
   * Renders the widget.
   *
   * @param  string $name        The element name
   * @param  string $value       The value selected in this widget
   * @param  array  $attributes  An array of HTML attributes to be merged with the default HTML attributes
   * @param  array  $errors      An array of errors for the field
   *
   * @return string An HTML tag string
   *
   * @see sfWidgetForm
   */
  public function render($name, $value = null, $attributes = array(), $errors = array())
  {
    if (is_null($value))
    {
      $value = array();
    }
    
    $choices = $this->getOption('choices');
    if ($choices instanceof sfCallable)
    {
      $choices = $choices->call();
    }
    
    $associated = array();
    $unassociated = array();
    foreach ($choices as $key => $option)
    {
      if (in_array(strval($key), $value))
      {
        $associated[$key] = $option;
      }
      else
      {
        $unassociated[$key] = $option;
      }
    }

    $associatedWidget = new sfWidgetFormChoice(array_merge($this->getOption('list_options'),array('choices' => $associated, 'multiple' => true, 'expanded' => true)));
	
    return strtr($this->getOption('template'),array(
	'%class%' => 'USJjQueryUIAutocomplete', 
	'%id%' => $this->generateId($name), 
	'%list%' => $associatedWidget->render($name,$value), 
	'%autocomplete%' => $this->renderTag('input', array('type' => 'text', 'name' => 'autocomplete_'.$name)) . 
      sprintf(<<<EOF
	<script type="text/javascript">
	  jQuery(document).ready(function() {
			
  	    jQuery('#%s').focus(function(){ $(this).val(''); }).trigger('focus');
	    jQuery('#%s').blur(function(){ $(this).val('%s'); }).trigger('blur');
					
	    if (!$('div#%s_list ul.checkbox_list').length) {
	      $('div#%s_list').append('<ul class="checkbox_list"></ul>');
	    }
					
	    jQuery('#%s').autocomplete({
	     source: %s,
	     select: function(event, ui) {
	       if (!$('#%s_'+ui.item.id).length) {
                 var ul = $('div#%s_list ul.checkbox_list');
		 $('<li><input type="checkbox" checked="checked" id="%s_'+ui.item.id+'" value="'+ui.item.id+'" name="%s"> <label for="%s_'+ui.item.id+'">'+ui.item.value+'</label></li>').prependTo(ul);
	       }
	       $(this).trigger('blur');
	    } 
	});
					
	jQuery('div#%s_list').change(function(e){
	  var elt = $(e.target);
	  if ($(elt).is(':not(:checked)')) {
	    $(elt).parent('li').animate({'backgroundColor':'#fb6c6c'},300); 
	  }
	  setTimeout(function(){
           if ($(elt).is(':not(:checked)')) {
	     $(elt).parent('li').slideUp(300,function() { $(this).remove() });
	   } else {
	     $(elt).parent('li').css({'backgroundColor':'#fff'});
	   }
	 },3000);
	});
      });			
</script>
EOF
 ,
	$this->generateId('autocomplete_'.$name),
	$this->generateId('autocomplete_'.$name),
	$this->getOption('help'),
	$this->generateId($name),
	$this->generateId($name),
        $this->generateId('autocomplete_'.$name),
	'"' . $this->getOption('source') . '"',
	$this->generateId($name),
	$this->generateId($name),
	$this->generateId($name),
	$name,
	$this->generateId($name),
	$this->generateId($name)
      )
    ));
  }

  /**
   * Gets the JavaScript paths associated with the widget.
   *
   * @return array An array of JavaScript paths
   */
  // public function getJavascripts()
  // {
  //   return array();
  // }

  /**
   * Gets the stylesheet paths associated with the widget.
   *
   * @return array An array of stylesheet paths
   */
  // public function getStylesheets()
  // {
  //   return array('/css/widgets.css' => 'all');
  // }
}
?>