Task to create a uglified version of the JS file

Rakefile

@@ -3,10 +3,18 @@ Bundler::GemHelper.install_tasks
 
 require 'rake/testtask'
 
-task :default => :test
+task :default => [:uglify, :test]
 
 Rake::TestTask.new(:test) do |test|
   test.libs << 'lib' << 'test'
   test.pattern = 'test/**/*_test.rb'
   test.verbose = true
 end
+
+task :uglify do
+  require 'uglifier'
+  file_folder = "lib/generators/templates"
+  File.open("#{file_folder}/autocomplete-rails.js", "w") do |f|
+    f << Uglifier.compile(File.read("#{file_folder}/autocomplete-rails-uncompressed.js"))
+  end
+end

lib/generators/templates/autocomplete-rails-uncompressed.js

@@ -0,0 +1,113 @@
+/*
+* Unobtrusive autocomplete
+*
+* To use it, you just have to include the HTML attribute autocomplete
+* with the autocomplete URL as the value
+*
+*   Example:
+*       <input type="text" data-autocomplete="/url/to/autocomplete">
+*
+* Optionally, you can use a jQuery selector to specify a field that can
+* be updated with the element id whenever you find a matching value
+*
+*   Example:
+*       <input type="text" data-autocomplete="/url/to/autocomplete" id_element="#id_field">
+*/
+
+$(document).ready(function(){
+  $('input[data-autocomplete]').railsAutocomplete();
+});
+
+(function(jQuery)
+{
+  var self = null;
+  jQuery.fn.railsAutocomplete = function() {
+    return this.live('focus',function() {
+      if (!this.railsAutoCompleter) {
+        this.railsAutoCompleter = new jQuery.railsAutocomplete(this);
+      }
+    });
+  };
+
+  jQuery.railsAutocomplete = function (e) {
+    _e = e;
+    this.init(_e);
+  };
+
+  jQuery.railsAutocomplete.fn = jQuery.railsAutocomplete.prototype = {
+    railsAutocomplete: '0.0.1'
+  };
+
+  jQuery.railsAutocomplete.fn.extend = jQuery.railsAutocomplete.extend = jQuery.extend;
+  jQuery.railsAutocomplete.fn.extend({
+    init: function(e) {
+      e.delimiter = $(e).attr('data-delimiter') || null;
+      function split( val ) {
+        return val.split( e.delimiter );
+      }
+      function extractLast( term ) {
+        return split( term ).pop().replace(/^\s+/,"");
+      }
+
+      $(e).autocomplete({
+        source: function( request, response ) {
+          $.getJSON( $(e).attr('data-autocomplete'), {
+            term: extractLast( request.term )
+          }, function() {
+            $(arguments[0]).each(function(i, el) {
+              var obj = {};
+              obj[el.id] = el;
+              $(e).data(obj);
+            });
+            response.apply(null, arguments);
+          });
+        },
+        search: function() {
+          // custom minLength
+          var term = extractLast( this.value );
+          if ( term.length < 2 ) {
+            return false;
+          }
+        },
+        focus: function() {
+          // prevent value inserted on focus
+          return false;
+        },
+        select: function( event, ui ) {
+          var terms = split( this.value );
+          // remove the current input
+          terms.pop();
+          // add the selected item
+          terms.push( ui.item.value );
+          // add placeholder to get the comma-and-space at the end
+          if (e.delimiter != null) {
+            terms.push( "" );
+            this.value = terms.join( e.delimiter );
+          } else {
+            this.value = terms.join("");
+            if ($(this).attr('id_element')) {
+              $($(this).attr('id_element')).val(ui.item.id);
+            }
+            if ($(this).attr('data-update-elements')) {
+              var data = $(this).data(ui.item.id.toString());
+              var update_elements = $.parseJSON($(this).attr("data-update-elements"));
+              for (var key in update_elements) {
+                $(update_elements[key]).val(data[key]);
+              }
+            }
+          }
+          var remember_string = this.value;
+          $(this).bind('keyup.clearId', function(){
+            if($(this).val().trim() != remember_string.trim()){
+              $($(this).attr('id_element')).val("");
+              $(this).unbind('keyup.clearId');
+            }
+          });
+          $(this).trigger('railsAutocomplete.select');
+
+          return false;
+        }
+      });
+    }
+  });
+})(jQuery);

rails3-jquery-autocomplete.gemspec

@@ -20,6 +20,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency('mongo_mapper', '>= 0.9')
   s.add_development_dependency('bson_ext', '~>1.3.0')
   s.add_development_dependency('shoulda', '~>2.11.1')
+  s.add_development_dependency('uglifier')
 
   s.files         = `git ls-files`.split("\n")
   s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")