An AJAX HTTP request abnormally terminated in autocomplete textbox

I have autocomplete textbox which populate the suggestion based on search text.


  1. User type in search text box
  2. User press enter instead of waiting for AJAX autocomplete to respond

It comes up with the following error.

An AJAX HTTP request terminated abnormally.
Debugging information follows.
Path: path/allcontent/autocomplete
StatusText: error
ResponseText: ReadyState: 4

I read Drupal alerts "An AJAX HTTP request terminated abnormally" during normal site operation, confusing site visitors/editors, but it didn’t help.

This is the callback code.

Autocomplete Textbox

function search_user($form) {         $form['text_usersearch'] = array(             '#type' => 'textfield',             '#title' => t(''),             '#autocomplete_path' => 'searchuser/autocomplete',             '#size' => 30,                         '#attributes' => array('class'=> array('auto_submit'),'style'=> array('float:left')),         );          $form['submit_user'] = array(             '#type' => 'submit',             '#value' => t('Find'),             '#attributes' => array('class'=> array('submit_user linkbuttonAction'),'style'=> array('float:left;margin-left:10px')),                 ); 

Autocomplete menu register

$items['searchuser/autocomplete'] = array(      'title' => 'Autocomplete for User',      'page callback' => 'user_autocomplete_search',      'access arguments' => array('access content'),  //or whatever permission makes sense      'type' => MENU_CALLBACK       ); 

Menu callback

function user_autocomplete_search($string) {         global $user;         $arrUserMatch = array();                  $matchCode = '%'.db_like($string).'%';         $arrUserTitle = SelectMatchingUserTitle($matchCode,10);                                        foreach ($arrUserTitle as $userId=>$userName)         {                                                      $autotext .= check_plain($userName);                                    $arrUserMatch[$userName] = $autotext;         }                drupal_json_output($arrUserMatch);             } 

Form submission handler

function search_user_submit($form, &$form_state) {             $searchval= $form['text_usersearch']['#value'];                          if($searchval=='')             return;         else            drupal_goto('user/'.$searchval);  } 

JavaScript autocomplete

$(window).load(function(){        = function (node) {                                                 this.input.value = $(node).data('autocompleteValue');                                                                                                 if(jQuery(this.input).hasClass('auto_submit')){                               this.input.form.submit();                                              }};                                                         }); 
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An AJAX HTTP request abnormally terminated in autocomplete textbox

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