LinkTo.php

<?php

/**
*
* Generates anchor HTML markup, which can perform GET/POST requests
*
* Example usage in the view
* <code>
*  $this->linkTo(
     'new', 
     'http://action/url', 
     array('confirm'=>'Are you sure?', 'method'=>'post'), 
     array(
       'class'=>'unshortlist_application_lnk',
       'title'=>'Unshortlist this candidate'
   ));
* </code>
*
* @author Martynas Miliauskas <[email protected]>
* @copyright 2008-2012 GulfJobsMarket Ltd.

*/

class Zend_View_Helper_LinkTo extends Zend_View_Helper_Abstract{

  /*
   * Generates anchor HTML markup, which can perform GET/POST requests
   *
   * @param string $label text inside of the anchor
   * @param string $url anchor href
   * @param array $options all sorts of magic: confirm messsage, request method
   * @param array $html additional anchor attributes
   * @return string
   */
  public function linkTo($label, $url, $options=array(), $html=array())
  {
    $on_click = array();
    $html_attrs = $html;

    if ( isset($options['method']) && $options['method'] != 'post' ) {
      $html_attrs['onclick'] = 'if (!confirm("'.$options['confirm'].'"){ return false; }';
      $html_attrs_str = '';
      foreach ($html_attrs as $attr=>$val) {
        $html_attrs_str.=' '.$attr.'="'.$val.'"';
      }
      return '<a href="'.$url.'" '.$html_attrs_str.'>'.$label.'</a>';
    }

    $on_click[] = "var f = document.createElement('form');"; 
    $on_click[] = "f.style.display = 'none';"; 
    $on_click[] = "this.parentNode.appendChild(f);"; 
    $on_click[] = "f.method = 'POST';"; 
    $on_click[] = "f.action = this.href;"; 
    $on_click[] = "f.submit();"; 
    $on_click[] = ""; 


    if (isset( $options['confirm']) ) {
      array_unshift( $on_click, "if ( confirm('".$options['confirm']."') ) {");
      array_push( $on_click, '}; return false');
    }
    $html_attrs['onclick'] = implode(' ', $on_click);

    $html_attrs_str = '';
    foreach ($html_attrs as $attr=>$val) {
      $html_attrs_str.=' '.$attr.'="'.$val.'"';
    }

    return '<a href="'.$url.'" '.$html_attrs_str.'>'.$label.'</a>';

  }

}

?>