How to dynamically reconfigure jquery-based Drupal autocomplete at runtime?

Question

Drupal has a very well-designed, jQuery autocomplete.js . As a rule, you do not need to worry about this, since its configuration and execution are handled by the Drupal API.

Now I need a way to reconfigure it at runtime (using JavaScript, that is). I have a standard drop-down list with a text box next to it, and depending on which option is selected in the selection window, I need to call different URLs for autocomplete, and for one of the options autocomplete should be completely disabled. Is it possible to reconfigure an existing instance of autocomplete, or do I need to somehow destroy and recreate it?

Answer 1

Well, for reference, I threw together a hack that works, but if anyone could think of a better solution, I would be glad to hear it.

Drupal.behaviors.dingCampaignRules = function () {
  $('#campaign-rules')
    .find('.campaign-rule-wrap')
      .each(function (i) {
          var type = $(this).find('select').val();

          $(this).find('.form-text')
            // Remove the current autocomplete bindings.
            .unbind()
            // And remove the autocomplete class
            .removeClass('form-autocomplete')
          .end()
          .find('select:not(.dingcampaignrules-processed)')
            .addClass('dingcampaignrules-processed')
            .change(Drupal.behaviors.dingCampaignRules)
          .end();

          if (type == 'page' || type == 'library' || type == 'taxonomy') {
            $(this).find('input.autocomplete')
              .removeClass('autocomplete-processed')
              .val(Drupal.settings.dingCampaignRules.autocompleteUrl + type)
            .end()
            .find('.form-text')
              .addClass('form-autocomplete');
            Drupal.behaviors.autocomplete(this);
          }
      });
};

This code comes from the ding_campaign module . Feel free to check the code if you need to do something like this. All this is GPL2.

Answer 2

Take a look at misc / autocomplete.js.

/**
 * Attaches the autocomplete behavior to all required fields
 */
Drupal.behaviors.autocomplete = function (context) {
  var acdb = [];
  $('input.autocomplete:not(.autocomplete-processed)', context).each(function () {
    var uri = this.value;
    if (!acdb[uri]) {
      acdb[uri] = new Drupal.ACDB(uri);
    }
    var input = $('#' + this.id.substr(0, this.id.length - 13))
      .attr('autocomplete', 'OFF')[0];
    $(input.form).submit(Drupal.autocompleteSubmit);
    new Drupal.jsAC(input, acdb[uri]);
    $(this).addClass('autocomplete-processed');
  });
};

ACDB, (uri). Drupal.jsAC keydown, keyup blur ajax ( ACDB ), ..

/**
 * An AutoComplete object
 */
Drupal.jsAC = function (input, db) {
  var ac = this;
  this.input = input;
  this.db = db;

  $(this.input)
    .keydown(function (event) { return ac.onkeydown(this, event); })
    .keyup(function (event) { ac.onkeyup(this, event); })
    .blur(function () { ac.hidePopup(); ac.db.cancel(); });

};

, , . , ".autocomplete-processing" , Drupal.attachBehaviors(thisInputElement).

. , . , select. Drupal.attachBehaviors, , , , .

Answer 3

, "" "" , . .

$('select#myelement').bind('change', function(e) { 
  if (/* something */) {
    $('input#myelement-autocomplete').attr('value', '/mycustom/path');
  }
}); 

Answer 4

Drupal 5

/*
 *  Błażej Owczarczyk
 *  [e-mail] 
 * 
 *  Name: Autocomplete City Taxonomy 
 *  Description: Hierarchical city selecting (province select and city autocomplete)
 */

var Act = Act || {};

Act.init = function () {
    $('select.act-province').change(Act.provinceChange);        // select with top taxonomy terms    
}

/*
 *  Change event of select element
 */
Act.provinceChange = function () { 
    var context = $(this).parent().parent();              
    var currentTid = $(this).val();
    Act.rewriteURI(context, currentTid);
    Act.unbind();
    Drupal.autocompleteAutoAttach();
};

/*
 *  Changes the value of hidden autocomplete input
 */
Act.rewriteURI = function (context, newTid) {
    var tempArray;
    tempArray = $('.autocomplete', context).val().split('/');
    tempArray.pop();
    tempArray.push(newTid);
    $('.autocomplete', context).val(tempArray.join('/'));    
};

/*
 *  Prevents muliple binding of the same events
 */
Act.unbind = function () {
    $('.form-autocomplete').unbind().parents('form').unbind('submit');
};

$(document).ready(Act.init);