Added new autocomplete for task assignments.

Introduced the cool jquery token plugin.

app/controllers/users_controller.rb

@@ -0,0 +1,11 @@
+class UsersController < ApplicationController
+
+  # Currently used to display users nick and ids for autocomplete
+  def index
+    @users = User.where("nick LIKE ?", "%#{params[:q]}%")
+    respond_to do |format|
+      format.json { render :json => @users.map { |u| {:id => u.id, :name => u.nick} } }
+    end
+  end
+
+end

app/helpers/users_helper.rb

@@ -0,0 +1,2 @@
+module UsersHelper
+end

app/models/task.rb

@@ -27,13 +27,13 @@ class Task < ActiveRecord::Base
   def enough_users_assigned?
     assignments.find_all_by_accepted(true).size >= required_users ? true : false
   end
-  
-  # extracts nicknames from a comma seperated string 
+
+  # Get users from comma seperated ids
   # and makes the users responsible for the task
-  def user_list=(string)
-    @user_list = string.split(%r{,\s*})
-    new_users = @user_list - users.collect(&:nick)
-    old_users = users.reject { |user| @user_list.include?(user.nick) }
+  def user_list=(ids)
+    list = ids.split(",")
+    new_users = list - users.collect(&:id)
+    old_users = users.reject { |user| list.include?(user.id) }
     
     logger.debug "New users: #{new_users}"
     logger.debug "Old users: #{old_users}"
@@ -44,8 +44,8 @@ class Task < ActiveRecord::Base
         assignments.find(:all, :conditions => ["user_id IN (?)", old_users.collect(&:id)]).each(&:destroy)
       end
       # create new assignments
-      new_users.each do |nick|
-        user = User.find_by_nick(nick)
+      new_users.each do |id|
+        user = User.find(id)
         if user.blank?
           errors.add(:user_list)
         else
@@ -62,7 +62,7 @@ class Task < ActiveRecord::Base
   end
   
   def user_list
-    @user_list ||= users.collect(&:nick).join(", ")
+    @user_list ||= users.collect(&:id).join(", ")
   end
 
   private

app/views/layouts/application.haml

@@ -3,12 +3,12 @@
   %head
     %meta{"http-equiv" => "content-type", :content => "text/html;charset=UTF-8"}
     %title= "FoodSoft - " + (yield(:title) or controller.controller_name)
-    = stylesheet_link_tag 'main', 'rails_messages', 'nav', 'simple_form', :cache => "all_cached"
+    = stylesheet_link_tag 'main', 'rails_messages', 'nav', 'simple_form', 'token-input', :cache => "all_cached"
     = stylesheet_link_tag "print", :media => "print"
     <!--[if lte IE 7]>
     = stylesheet_link_tag 'ie_hacks'
     <![endif]-->
-    = javascript_include_tag 'jquery.min', 'jquery-ui.min', 'jquery_ujs', 'application', 'ordering', :cache => "all_cached"
+    = javascript_include_tag 'jquery.min', 'jquery-ui.min', 'jquery_ujs', 'jquery.tokeninput', 'application', 'ordering', :cache => "all_cached"
     = yield(:head)
   %body
     #logininfo= render :partial => 'shared/loginInfo'

app/views/tasks/_form.html.haml

@@ -1,8 +1,17 @@
+- content_for :head do
+  :javascript
+    $(function() {
+      $("#task_user_list").tokenInput("#{users_path(:format => :json)}", {
+        crossDomain: false,
+        prePopulate: $("#task_user_list").data("pre")
+      });
+    });
+
 = simple_form_for @task do |f|
   = f.input :name
   = f.input :description
   = f.input :duration, :as => :select, :collection => 1..3
-  = f.input :user_list, :as => :string
+  = f.input :user_list, :as => :string, :input_html => { 'data-pre' => @task.users.map { |u| {:id => u.id, :name => u.nick} }.to_json }
   = f.input :required_users
   = f.association :workgroup
   = f.input :due_date, :include_blank => true