Added tag editing

app/assets/javascripts/application.js

@@ -15,6 +15,7 @@
 //= require turbolinks
 //= require bootstrap-sprockets
 //= require bootstrap-datepicker
+//= require bootstrap-tagsinput
 //= require cocoon
 //= require typeahead
 //= require autosize

app/assets/javascripts/recipe_editor.js

@@ -26,6 +26,32 @@
         }
     });
 
+    // var tagSearchEngine = new Bloodhound({
+    //     initialize: false,
+    //     datumTokenizer: function(datum) {
+    //         return Bloodhound.tokenizers.whitespace(datum.name);
+    //     },
+    //     queryTokenizer: Bloodhound.tokenizers.whitespace,
+    //     identify: function(datum) { return datum.id; },
+    //     sorter: function(a, b) {
+    //         if (a.name < b.name) {
+    //             return -1;
+    //         } else if (b.name < a.name) {
+    //             return 1;
+    //         } else {
+    //             return 0;
+    //         }
+    //     },
+    //     prefetch: {
+    //         url: '/tags/prefetch.json',
+    //         cache: false
+    //     },
+    //     remote: {
+    //         url: '/tags/search.json?query=%QUERY',
+    //         wildcard: '%QUERY'
+    //     }
+    // });
+
     function reorder($container) {
         $container.find("div.nested-fields").each(function(idx, editor) {
             var $editor = $(editor);
@@ -160,11 +186,17 @@
 
         var $ingredientList = $("#ingredient-list");
         var $stepList = $("#step-list");
+        var $tagInput = $("select.tag_names");
 
         if ($ingredientList.length) {
             ingredientSearchEngine.initialize(false);
         }
 
+        $tagInput.tagsinput({
+            trimValue: true,
+            confirmKeys: [9, 13, 32, 44] // tab, enter, space, comma
+        });
+
         initializeStepEditor($stepList);
 
         $stepList

app/assets/stylesheets/application.scss

@@ -13,6 +13,7 @@
  *= require flash_messages
  *= require chosen
  *= require bootstrap-datepicker3
+ *= require bootstrap-tagsinput
  *= require font_references
  */
 

app/controllers/recipes_controller.rb

@@ -9,7 +9,7 @@ class RecipesController < ApplicationController
     @criteria = ViewModels::RecipeCriteria.new(params[:criteria])
     @criteria.page = params[:page]
     @criteria.per = params[:per]
-    @recipes = Recipe.for_criteria(@criteria)
+    @recipes = Recipe.for_criteria(@criteria).includes(:tags)
   end
 
   # GET /recipes/1
@@ -106,6 +106,6 @@ class RecipesController < ApplicationController
 
     # Never trust parameters from the scary internet, only allow the white list through.
     def recipe_params
-      params.require(:recipe).permit(:name, :description, :source, :yields, :total_time, :active_time, recipe_ingredients_attributes: [:name, :ingredient_id, :quantity, :units, :preparation, :sort_order, :id, :_destroy], recipe_steps_attributes: [:step, :sort_order, :id, :_destroy])
+      params.require(:recipe).permit(:name, :description, :source, :yields, :total_time, :active_time, tag_names: [], recipe_ingredients_attributes: [:name, :ingredient_id, :quantity, :units, :preparation, :sort_order, :id, :_destroy], recipe_steps_attributes: [:step, :sort_order, :id, :_destroy])
     end
 end

app/controllers/tags_controller.rb

@@ -0,0 +1,16 @@
+class TagsController < ApplicationController
+
+  def index
+
+  end
+
+  def prefetch
+    @tags = Tag.all.order(:name)
+    render :search
+  end
+
+  def search
+    @tags = Tag.search(params[:query]).order(:name)
+  end
+
+end

app/models/concerns/tokenized_like.rb

@@ -22,5 +22,11 @@ module TokenizedLike
       query
     end
 
+    def matches_token(attribute, token)
+      table = self.arel_table
+      query = self.all
+      query.where(table[attribute.to_sym].matches("#{token}%"))
+    end
+
   end
 end

app/models/recipe.rb

@@ -48,6 +48,20 @@ class Recipe < ApplicationRecord
     end
   end
 
+  def tag_names
+    self.tags.map { |t| t.name }
+  end
+
+  def tag_names=(names)
+    names = Array.wrap(names).map { |n| n.to_s }.select { |n| n.length > 0 }
+    existing_tags = Tag.by_name(names)
+    new_tags = names.select { |n| existing_tags.none? { |t| t.is?(n) } }
+    self.tags = existing_tags
+    new_tags.each do |n|
+      self.tags << Tag.new(name: n)
+    end
+  end
+
   def nutrition_data(recalculate = false)
     if recalculate || @nutrition_data.nil?
       @nutrition_data = calculate_nutrition_data

app/models/tag.rb

@@ -1,5 +1,30 @@
 class Tag < ApplicationRecord
+  include TokenizedLike
+
+  scope :by_name, ->(names) { where(lowercase_name: Array.wrap(names).map { |n| n.downcase }) }
 
   validates :name, presence: true, length: {maximum: 250}, uniqueness: { case_sensitive: false }
 
+  before_save :set_lowercase_name
+
+  def is?(tag_name)
+    tag_name.casecmp(self.name) == 0
+  end
+
+  def self.search(query)
+    token = query.to_s.strip
+
+    if token.empty?
+      Tag.none
+    else
+      Tag.matches_token(:name, token)
+    end
+  end
+
+  private
+
+  def set_lowercase_name
+    self.lowercase_name = self.name.downcase
+  end
+
 end

app/views/recipes/_editor.html.erb

@@ -23,6 +23,11 @@
     <%= f.text_area :description, class: 'form-control' %>
   </div>
 
+  <div class="form-group form-group-sm tag_names_container">
+    <%= f.label :tag_names, class: "control-label" %>
+    <%= f.select :tag_names, options_for_select(f.object.tag_names), {}, multiple: true, class: 'form-control tag_names' %>
+  </div>
+
   <div class="row">
     <div class="col-xs-4">
       <div class="form-group form-group-sm">

app/views/tags/search.json.jbuilder

@@ -0,0 +1,6 @@
+
+json.array! @tags do |t|
+
+  json.extract! t, :id, :name
+
+end

config/routes.rb

@@ -21,6 +21,15 @@ Rails.application.routes.draw do
 
   match '/ingredients(/:id)/select_ndbn' => 'ingredients#select_ndbn', via: [:post, :patch, :put]
 
+  resources :tags, only: [:index] do
+    collection do
+      constraints format: 'json' do
+        get :search
+        get :prefetch
+      end
+    end
+  end
+
   resource :user, only: [:new, :create, :edit, :update]
 
   get '/login' => 'users#login', as: :login

db/migrate/20161014173138_create_tags.rb

@@ -1,7 +1,8 @@
 class CreateTags < ActiveRecord::Migration[5.0]
   def change
     create_table :tags do |t|
-      t.string :name, index: {unique: true}
+      t.string :name
+      t.string :lowercase_name, index: {unique: true}
 
       t.timestamps
     end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20161014161544) do
+ActiveRecord::Schema.define(version: 20161014173138) do
 
   create_table "ingredient_units", force: :cascade do |t|
     t.integer "ingredient_id",                          null: false
@@ -110,6 +110,21 @@ ActiveRecord::Schema.define(version: 20161014161544) do
     t.float    "rating"
   end
 
+  create_table "recipes_tags", id: false, force: :cascade do |t|
+    t.integer "recipe_id"
+    t.integer "tag_id"
+    t.index ["recipe_id"], name: "index_recipes_tags_on_recipe_id"
+    t.index ["tag_id"], name: "index_recipes_tags_on_tag_id"
+  end
+
+  create_table "tags", force: :cascade do |t|
+    t.string   "name"
+    t.string   "lowercase_name"
+    t.datetime "created_at",     null: false
+    t.datetime "updated_at",     null: false
+    t.index ["lowercase_name"], name: "index_tags_on_lowercase_name", unique: true
+  end
+
   create_table "usda_food_weights", force: :cascade do |t|
     t.integer  "usda_food_id",                         null: false
     t.decimal  "amount",       precision: 7, scale: 3

spec/factories/tags.rb

@@ -1,5 +1,5 @@
 FactoryGirl.define do
   factory :tag do
-    name "MyString"
+    sequence(:name) { |n| "tag#{n}" }
   end
 end

spec/models/recipe_spec.rb

@@ -28,4 +28,53 @@ RSpec.describe Recipe, type: :model do
     end
 
   end
+
+  describe '#tag_names' do
+
+    it 'should return tag names' do
+      t1 = create(:tag, name: 'one')
+      t2 = create(:tag, name: 'two')
+
+      r = create(:recipe)
+
+      r.tags = [t1, t2]
+      r.save
+
+      expect(r.tag_names).to contain_exactly('one', 'two')
+    end
+
+    it 'should set existing tags' do
+      t1 = create(:tag, name: 'one')
+      t2 = create(:tag, name: 'two')
+
+      r = create(:recipe)
+      r.tag_names = ['one', 'two']
+      expect(r.tags).to contain_exactly(t1, t2)
+    end
+
+    it 'should set new tags' do
+      r = create(:recipe)
+      r.tag_names = ['one', 'two']
+      expect(r.tags.length).to eq 2
+      expect(r.tags.first.persisted?).to be_truthy
+    end
+
+    it 'should set new and existing tags' do
+      t1 = create(:tag, name: 'one')
+      t2 = create(:tag, name: 'two')
+
+      r = create(:recipe)
+      r.tag_names = ['One', 'TWO', 'three']
+      expect(r.tags).to include(t1, t2)
+      expect(r.tags.length).to eq 3
+      expect(r.tags.detect {|t| t.is?('THREE')}).not_to be_nil
+    end
+
+    it 'ignores empty elements' do
+      r = create(:recipe)
+      r.tag_names = ['one', 'two', nil, '']
+      expect(r.tags.length).to eq 2
+    end
+
+  end
 end

vendor/assets/javascripts/bootstrap-tagsinput.js

@@ -0,0 +1,682 @@
+/*
+ * bootstrap-tagsinput v0.8.0
+ *
+ */
+
+(function ($) {
+  "use strict";
+
+  var defaultOptions = {
+    tagClass: function(item) {
+      return 'label label-info';
+    },
+    focusClass: 'focus',
+    itemValue: function(item) {
+      return item ? item.toString() : item;
+    },
+    itemText: function(item) {
+      return this.itemValue(item);
+    },
+    itemTitle: function(item) {
+      return null;
+    },
+    freeInput: true,
+    addOnBlur: true,
+    maxTags: undefined,
+    maxChars: undefined,
+    confirmKeys: [13, 44],
+    delimiter: ',',
+    delimiterRegex: null,
+    cancelConfirmKeysOnEmpty: false,
+    onTagExists: function(item, $tag) {
+      $tag.hide().fadeIn();
+    },
+    trimValue: false,
+    allowDuplicates: false,
+    triggerChange: true
+  };
+
+  /**
+   * Constructor function
+   */
+  function TagsInput(element, options) {
+    this.isInit = true;
+    this.itemsArray = [];
+
+    this.$element = $(element);
+    this.$element.hide();
+
+    this.isSelect = (element.tagName === 'SELECT');
+    this.multiple = (this.isSelect && element.hasAttribute('multiple'));
+    this.objectItems = options && options.itemValue;
+    this.placeholderText = element.hasAttribute('placeholder') ? this.$element.attr('placeholder') : '';
+    this.inputSize = Math.max(1, this.placeholderText.length);
+
+    this.$container = $('<div class="bootstrap-tagsinput"></div>');
+    this.$input = $('<input type="text" placeholder="' + this.placeholderText + '"/>').appendTo(this.$container);
+
+    this.$element.before(this.$container);
+
+    this.build(options);
+    this.isInit = false;
+  }
+
+  TagsInput.prototype = {
+    constructor: TagsInput,
+
+    /**
+     * Adds the given item as a new tag. Pass true to dontPushVal to prevent
+     * updating the elements val()
+     */
+    add: function(item, dontPushVal, options) {
+      var self = this;
+
+      if (self.options.maxTags && self.itemsArray.length >= self.options.maxTags)
+        return;
+
+      // Ignore falsey values, except false
+      if (item !== false && !item)
+        return;
+
+      // Trim value
+      if (typeof item === "string" && self.options.trimValue) {
+        item = $.trim(item);
+      }
+
+      // Throw an error when trying to add an object while the itemValue option was not set
+      if (typeof item === "object" && !self.objectItems)
+        throw("Can't add objects when itemValue option is not set");
+
+      // Ignore strings only containg whitespace
+      if (item.toString().match(/^\s*$/))
+        return;
+
+      // If SELECT but not multiple, remove current tag
+      if (self.isSelect && !self.multiple && self.itemsArray.length > 0)
+        self.remove(self.itemsArray[0]);
+
+      if (typeof item === "string" && this.$element[0].tagName === 'INPUT') {
+        var delimiter = (self.options.delimiterRegex) ? self.options.delimiterRegex : self.options.delimiter;
+        var items = item.split(delimiter);
+        if (items.length > 1) {
+          for (var i = 0; i < items.length; i++) {
+            this.add(items[i], true);
+          }
+
+          if (!dontPushVal)
+            self.pushVal(self.options.triggerChange);
+          return;
+        }
+      }
+
+      var itemValue = self.options.itemValue(item),
+          itemText = self.options.itemText(item),
+          tagClass = self.options.tagClass(item),
+          itemTitle = self.options.itemTitle(item);
+
+      // Ignore items allready added
+      var existing = $.grep(self.itemsArray, function(item) { return self.options.itemValue(item) === itemValue; } )[0];
+      if (existing && !self.options.allowDuplicates) {
+        // Invoke onTagExists
+        if (self.options.onTagExists) {
+          var $existingTag = $(".tag", self.$container).filter(function() { return $(this).data("item") === existing; });
+          self.options.onTagExists(item, $existingTag);
+        }
+        return;
+      }
+
+      // if length greater than limit
+      if (self.items().toString().length + item.length + 1 > self.options.maxInputLength)
+        return;
+
+      // raise beforeItemAdd arg
+      var beforeItemAddEvent = $.Event('beforeItemAdd', { item: item, cancel: false, options: options});
+      self.$element.trigger(beforeItemAddEvent);
+      if (beforeItemAddEvent.cancel)
+        return;
+
+      // register item in internal array and map
+      self.itemsArray.push(item);
+
+      // add a tag element
+
+      var $tag = $('<span class="tag ' + htmlEncode(tagClass) + (itemTitle !== null ? ('" title="' + itemTitle) : '') + '">' + htmlEncode(itemText) + '<span data-role="remove"></span></span>');
+      $tag.data('item', item);
+      self.findInputWrapper().before($tag);
+      $tag.after(' ');
+
+      // Check to see if the tag exists in its raw or uri-encoded form
+      var optionExists = (
+          $('option[value="' + encodeURIComponent(itemValue) + '"]', self.$element).length ||
+          $('option[value="' + htmlEncode(itemValue) + '"]', self.$element).length
+      );
+
+      // add <option /> if item represents a value not present in one of the <select />'s options
+      if (self.isSelect && !optionExists) {
+        var $option = $('<option selected>' + htmlEncode(itemText) + '</option>');
+        $option.data('item', item);
+        $option.attr('value', itemValue);
+        self.$element.append($option);
+      }
+
+      if (!dontPushVal)
+        self.pushVal(self.options.triggerChange);
+
+      // Add class when reached maxTags
+      if (self.options.maxTags === self.itemsArray.length || self.items().toString().length === self.options.maxInputLength)
+        self.$container.addClass('bootstrap-tagsinput-max');
+
+      // If using typeahead, once the tag has been added, clear the typeahead value so it does not stick around in the input.
+      if ($('.typeahead, .twitter-typeahead', self.$container).length) {
+        self.$input.typeahead('val', '');
+      }
+
+      if (this.isInit) {
+        self.$element.trigger($.Event('itemAddedOnInit', { item: item, options: options }));
+      } else {
+        self.$element.trigger($.Event('itemAdded', { item: item, options: options }));
+      }
+    },
+
+    /**
+     * Removes the given item. Pass true to dontPushVal to prevent updating the
+     * elements val()
+     */
+    remove: function(item, dontPushVal, options) {
+      var self = this;
+
+      if (self.objectItems) {
+        if (typeof item === "object")
+          item = $.grep(self.itemsArray, function(other) { return self.options.itemValue(other) ==  self.options.itemValue(item); } );
+        else
+          item = $.grep(self.itemsArray, function(other) { return self.options.itemValue(other) ==  item; } );
+
+        item = item[item.length-1];
+      }
+
+      if (item) {
+        var beforeItemRemoveEvent = $.Event('beforeItemRemove', { item: item, cancel: false, options: options });
+        self.$element.trigger(beforeItemRemoveEvent);
+        if (beforeItemRemoveEvent.cancel)
+          return;
+
+        $('.tag', self.$container).filter(function() { return $(this).data('item') === item; }).remove();
+        $('option', self.$element).filter(function() { return $(this).data('item') === item; }).remove();
+        if($.inArray(item, self.itemsArray) !== -1)
+          self.itemsArray.splice($.inArray(item, self.itemsArray), 1);
+      }
+
+      if (!dontPushVal)
+        self.pushVal(self.options.triggerChange);
+
+      // Remove class when reached maxTags
+      if (self.options.maxTags > self.itemsArray.length)
+        self.$container.removeClass('bootstrap-tagsinput-max');
+
+      self.$element.trigger($.Event('itemRemoved',  { item: item, options: options }));
+    },
+
+    /**
+     * Removes all items
+     */
+    removeAll: function() {
+      var self = this;
+
+      $('.tag', self.$container).remove();
+      $('option', self.$element).remove();
+
+      while(self.itemsArray.length > 0)
+        self.itemsArray.pop();
+
+      self.pushVal(self.options.triggerChange);
+    },
+
+    /**
+     * Refreshes the tags so they match the text/value of their corresponding
+     * item.
+     */
+    refresh: function() {
+      var self = this;
+      $('.tag', self.$container).each(function() {
+        var $tag = $(this),
+            item = $tag.data('item'),
+            itemValue = self.options.itemValue(item),
+            itemText = self.options.itemText(item),
+            tagClass = self.options.tagClass(item);
+
+        // Update tag's class and inner text
+        $tag.attr('class', null);
+        $tag.addClass('tag ' + htmlEncode(tagClass));
+        $tag.contents().filter(function() {
+          return this.nodeType == 3;
+        })[0].nodeValue = htmlEncode(itemText);
+
+        if (self.isSelect) {
+          var option = $('option', self.$element).filter(function() { return $(this).data('item') === item; });
+          option.attr('value', itemValue);
+        }
+      });
+    },
+
+    /**
+     * Returns the items added as tags
+     */
+    items: function() {
+      return this.itemsArray;
+    },
+
+    /**
+     * Assembly value by retrieving the value of each item, and set it on the
+     * element.
+     */
+    pushVal: function() {
+      var self = this,
+          val = $.map(self.items(), function(item) {
+            return self.options.itemValue(item).toString();
+          });
+
+      self.$element.val(val, true);
+
+      if (self.options.triggerChange)
+        self.$element.trigger('change');
+    },
+
+    /**
+     * Initializes the tags input behaviour on the element
+     */
+    build: function(options) {
+      var self = this;
+
+      self.options = $.extend({}, defaultOptions, options);
+      // When itemValue is set, freeInput should always be false
+      if (self.objectItems)
+        self.options.freeInput = false;
+
+      makeOptionItemFunction(self.options, 'itemValue');
+      makeOptionItemFunction(self.options, 'itemText');
+      makeOptionFunction(self.options, 'tagClass');
+
+      // Typeahead Bootstrap version 2.3.2
+      if (self.options.typeahead) {
+        var typeahead = self.options.typeahead || {};
+
+        makeOptionFunction(typeahead, 'source');
+
+        self.$input.typeahead($.extend({}, typeahead, {
+          source: function (query, process) {
+            function processItems(items) {
+              var texts = [];
+
+              for (var i = 0; i < items.length; i++) {
+                var text = self.options.itemText(items[i]);
+                map[text] = items[i];
+                texts.push(text);
+              }
+              process(texts);
+            }
+
+            this.map = {};
+            var map = this.map,
+                data = typeahead.source(query);
+
+            if ($.isFunction(data.success)) {
+              // support for Angular callbacks
+              data.success(processItems);
+            } else if ($.isFunction(data.then)) {
+              // support for Angular promises
+              data.then(processItems);
+            } else {
+              // support for functions and jquery promises
+              $.when(data)
+                  .then(processItems);
+            }
+          },
+          updater: function (text) {
+            self.add(this.map[text]);
+            return this.map[text];
+          },
+          matcher: function (text) {
+            return (text.toLowerCase().indexOf(this.query.trim().toLowerCase()) !== -1);
+          },
+          sorter: function (texts) {
+            return texts.sort();
+          },
+          highlighter: function (text) {
+            var regex = new RegExp( '(' + this.query + ')', 'gi' );
+            return text.replace( regex, "<strong>$1</strong>" );
+          }
+        }));
+      }
+
+      // typeahead.js
+      if (self.options.typeaheadjs) {
+        var typeaheadConfig = null;
+        var typeaheadDatasets = {};
+
+        // Determine if main configurations were passed or simply a dataset
+        var typeaheadjs = self.options.typeaheadjs;
+        if ($.isArray(typeaheadjs)) {
+          typeaheadConfig = typeaheadjs[0];
+          typeaheadDatasets = typeaheadjs[1];
+        } else {
+          typeaheadDatasets = typeaheadjs;
+        }
+
+        self.$input.typeahead(typeaheadConfig, typeaheadDatasets).on('typeahead:selected', $.proxy(function (obj, datum) {
+          if (typeaheadDatasets.valueKey)
+            self.add(datum[typeaheadDatasets.valueKey]);
+          else
+            self.add(datum);
+          self.$input.typeahead('val', '');
+        }, self));
+      }
+
+      self.$container.on('click', $.proxy(function(event) {
+        if (! self.$element.attr('disabled')) {
+          self.$input.removeAttr('disabled');
+        }
+        self.$input.focus();
+      }, self));
+
+      if (self.options.addOnBlur && self.options.freeInput) {
+        self.$input.on('focusout', $.proxy(function(event) {
+          // HACK: only process on focusout when no typeahead opened, to
+          //       avoid adding the typeahead text as tag
+          if ($('.typeahead, .twitter-typeahead', self.$container).length === 0) {
+            self.add(self.$input.val());
+            self.$input.val('');
+          }
+        }, self));
+      }
+
+      // Toggle the 'focus' css class on the container when it has focus
+      self.$container.on({
+        focusin: function() {
+          self.$container.addClass(self.options.focusClass);
+        },
+        focusout: function() {
+          self.$container.removeClass(self.options.focusClass);
+        },
+      });
+
+      self.$container.on('keydown', 'input', $.proxy(function(event) {
+        var $input = $(event.target),
+            $inputWrapper = self.findInputWrapper();
+
+        if (self.$element.attr('disabled')) {
+          self.$input.attr('disabled', 'disabled');
+          return;
+        }
+
+        switch (event.which) {
+            // BACKSPACE
+          case 8:
+            if (doGetCaretPosition($input[0]) === 0) {
+              var prev = $inputWrapper.prev();
+              if (prev.length) {
+                self.remove(prev.data('item'));
+              }
+            }
+            break;
+
+            // DELETE
+          case 46:
+            if (doGetCaretPosition($input[0]) === 0) {
+              var next = $inputWrapper.next();
+              if (next.length) {
+                self.remove(next.data('item'));
+              }
+            }
+            break;
+
+            // LEFT ARROW
+          case 37:
+            // Try to move the input before the previous tag
+            var $prevTag = $inputWrapper.prev();
+            if ($input.val().length === 0 && $prevTag[0]) {
+              $prevTag.before($inputWrapper);
+              $input.focus();
+            }
+            break;
+            // RIGHT ARROW
+          case 39:
+            // Try to move the input after the next tag
+            var $nextTag = $inputWrapper.next();
+            if ($input.val().length === 0 && $nextTag[0]) {
+              $nextTag.after($inputWrapper);
+              $input.focus();
+            }
+            break;
+          default:
+            // ignore
+        }
+
+        // Reset internal input's size
+        var textLength = $input.val().length,
+            wordSpace = Math.ceil(textLength / 5),
+            size = textLength + wordSpace + 1;
+        $input.attr('size', Math.max(this.inputSize, $input.val().length));
+      }, self));
+
+      self.$container.on('keypress', 'input', $.proxy(function(event) {
+        var $input = $(event.target);
+
+        if (self.$element.attr('disabled')) {
+          self.$input.attr('disabled', 'disabled');
+          return;
+        }
+
+        var text = $input.val(),
+            maxLengthReached = self.options.maxChars && text.length >= self.options.maxChars;
+        if (self.options.freeInput && (keyCombinationInList(event, self.options.confirmKeys) || maxLengthReached)) {
+          // Only attempt to add a tag if there is data in the field
+          if (text.length !== 0) {
+            self.add(maxLengthReached ? text.substr(0, self.options.maxChars) : text);
+            $input.val('');
+          }
+
+          // If the field is empty, let the event triggered fire as usual
+          if (self.options.cancelConfirmKeysOnEmpty === false) {
+            event.preventDefault();
+          }
+        }
+
+        // Reset internal input's size
+        var textLength = $input.val().length,
+            wordSpace = Math.ceil(textLength / 5),
+            size = textLength + wordSpace + 1;
+        $input.attr('size', Math.max(this.inputSize, $input.val().length));
+      }, self));
+
+      // Remove icon clicked
+      self.$container.on('click', '[data-role=remove]', $.proxy(function(event) {
+        if (self.$element.attr('disabled')) {
+          return;
+        }
+        self.remove($(event.target).closest('.tag').data('item'));
+      }, self));
+
+      // Only add existing value as tags when using strings as tags
+      if (self.options.itemValue === defaultOptions.itemValue) {
+        if (self.$element[0].tagName === 'INPUT') {
+          self.add(self.$element.val());
+        } else {
+          $('option', self.$element).each(function() {
+            self.add($(this).attr('value'), true);
+          });
+        }
+      }
+    },
+
+    /**
+     * Removes all tagsinput behaviour and unregsiter all event handlers
+     */
+    destroy: function() {
+      var self = this;
+
+      // Unbind events
+      self.$container.off('keypress', 'input');
+      self.$container.off('click', '[role=remove]');
+
+      self.$container.remove();
+      self.$element.removeData('tagsinput');
+      self.$element.show();
+    },
+
+    /**
+     * Sets focus on the tagsinput
+     */
+    focus: function() {
+      this.$input.focus();
+    },
+
+    /**
+     * Returns the internal input element
+     */
+    input: function() {
+      return this.$input;
+    },
+
+    /**
+     * Returns the element which is wrapped around the internal input. This
+     * is normally the $container, but typeahead.js moves the $input element.
+     */
+    findInputWrapper: function() {
+      var elt = this.$input[0],
+          container = this.$container[0];
+      while(elt && elt.parentNode !== container)
+        elt = elt.parentNode;
+
+      return $(elt);
+    }
+  };
+
+  /**
+   * Register JQuery plugin
+   */
+  $.fn.tagsinput = function(arg1, arg2, arg3) {
+    var results = [];
+
+    this.each(function() {
+      var tagsinput = $(this).data('tagsinput');
+      // Initialize a new tags input
+      if (!tagsinput) {
+        tagsinput = new TagsInput(this, arg1);
+        $(this).data('tagsinput', tagsinput);
+        results.push(tagsinput);
+
+        if (this.tagName === 'SELECT') {
+          $('option', $(this)).attr('selected', 'selected');
+        }
+
+        // Init tags from $(this).val()
+        $(this).val($(this).val());
+      } else if (!arg1 && !arg2) {
+        // tagsinput already exists
+        // no function, trying to init
+        results.push(tagsinput);
+      } else if(tagsinput[arg1] !== undefined) {
+        // Invoke function on existing tags input
+        if(tagsinput[arg1].length === 3 && arg3 !== undefined){
+          var retVal = tagsinput[arg1](arg2, null, arg3);
+        }else{
+          var retVal = tagsinput[arg1](arg2);
+        }
+        if (retVal !== undefined)
+          results.push(retVal);
+      }
+    });
+
+    if ( typeof arg1 == 'string') {
+      // Return the results from the invoked function calls
+      return results.length > 1 ? results : results[0];
+    } else {
+      return results;
+    }
+  };
+
+  $.fn.tagsinput.Constructor = TagsInput;
+
+  /**
+   * Most options support both a string or number as well as a function as
+   * option value. This function makes sure that the option with the given
+   * key in the given options is wrapped in a function
+   */
+  function makeOptionItemFunction(options, key) {
+    if (typeof options[key] !== 'function') {
+      var propertyName = options[key];
+      options[key] = function(item) { return item[propertyName]; };
+    }
+  }
+  function makeOptionFunction(options, key) {
+    if (typeof options[key] !== 'function') {
+      var value = options[key];
+      options[key] = function() { return value; };
+    }
+  }
+  /**
+   * HtmlEncodes the given value
+   */
+  var htmlEncodeContainer = $('<div />');
+  function htmlEncode(value) {
+    if (value) {
+      return htmlEncodeContainer.text(value).html();
+    } else {
+      return '';
+    }
+  }
+
+  /**
+   * Returns the position of the caret in the given input field
+   * http://flightschool.acylt.com/devnotes/caret-position-woes/
+   */
+  function doGetCaretPosition(oField) {
+    var iCaretPos = 0;
+    if (document.selection) {
+      oField.focus ();
+      var oSel = document.selection.createRange();
+      oSel.moveStart ('character', -oField.value.length);
+      iCaretPos = oSel.text.length;
+    } else if (oField.selectionStart || oField.selectionStart == '0') {
+      iCaretPos = oField.selectionStart;
+    }
+    return (iCaretPos);
+  }
+
+  /**
+   * Returns boolean indicates whether user has pressed an expected key combination.
+   * @param object keyPressEvent: JavaScript event object, refer
+   *     http://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+   * @param object lookupList: expected key combinations, as in:
+   *     [13, {which: 188, shiftKey: true}]
+   */
+  function keyCombinationInList(keyPressEvent, lookupList) {
+    var found = false;
+    $.each(lookupList, function (index, keyCombination) {
+      if (typeof (keyCombination) === 'number' && keyPressEvent.which === keyCombination) {
+        found = true;
+        return false;
+      }
+
+      if (keyPressEvent.which === keyCombination.which) {
+        var alt = !keyCombination.hasOwnProperty('altKey') || keyPressEvent.altKey === keyCombination.altKey,
+            shift = !keyCombination.hasOwnProperty('shiftKey') || keyPressEvent.shiftKey === keyCombination.shiftKey,
+            ctrl = !keyCombination.hasOwnProperty('ctrlKey') || keyPressEvent.ctrlKey === keyCombination.ctrlKey;
+        if (alt && shift && ctrl) {
+          found = true;
+          return false;
+        }
+      }
+    });
+
+    return found;
+  }
+
+  /**
+   * Initialize tagsinput behaviour on inputs and selects which have
+   * data-role=tagsinput
+   */
+  $(function() {
+    $("input[data-role=tagsinput], select[multiple][data-role=tagsinput]").tagsinput();
+  });
+})(window.jQuery);

vendor/assets/stylesheets/bootstrap-tagsinput-typeahead.css

@@ -0,0 +1,54 @@
+/*
+ * bootstrap-tagsinput v0.8.0
+ *
+ */
+
+.twitter-typeahead .tt-query,
+.twitter-typeahead .tt-hint {
+    margin-bottom: 0;
+}
+
+.twitter-typeahead .tt-hint
+{
+    display: none;
+}
+
+.tt-menu {
+    position: absolute;
+    top: 100%;
+    left: 0;
+    z-index: 1000;
+    display: none;
+    float: left;
+    min-width: 160px;
+    padding: 5px 0;
+    margin: 2px 0 0;
+    list-style: none;
+    font-size: 14px;
+    background-color: #ffffff;
+    border: 1px solid #cccccc;
+    border: 1px solid rgba(0, 0, 0, 0.15);
+    border-radius: 4px;
+    -webkit-box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
+    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.175);
+    background-clip: padding-box;
+    cursor: pointer;
+}
+
+.tt-suggestion {
+    display: block;
+    padding: 3px 20px;
+    clear: both;
+    font-weight: normal;
+    line-height: 1.428571429;
+    color: #333333;
+    white-space: nowrap;
+}
+
+.tt-suggestion:hover,
+.tt-suggestion:focus {
+    color: #ffffff;
+    text-decoration: none;
+    outline: 0;
+    background-color: #428bca;
+}

vendor/assets/stylesheets/bootstrap-tagsinput.css

@@ -0,0 +1,60 @@
+/*
+ * bootstrap-tagsinput v0.8.0
+ *
+ */
+
+.bootstrap-tagsinput {
+  background-color: #fff;
+  border: 1px solid #ccc;
+  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075);
+  display: inline-block;
+  padding: 4px 6px;
+  color: #555;
+  vertical-align: middle;
+  border-radius: 4px;
+  max-width: 100%;
+  line-height: 22px;
+  cursor: text;
+}
+.bootstrap-tagsinput input {
+  border: none;
+  box-shadow: none;
+  outline: none;
+  background-color: transparent;
+  padding: 0 6px;
+  margin: 0;
+  width: auto;
+  max-width: inherit;
+}
+.bootstrap-tagsinput.form-control input::-moz-placeholder {
+  color: #777;
+  opacity: 1;
+}
+.bootstrap-tagsinput.form-control input:-ms-input-placeholder {
+  color: #777;
+}
+.bootstrap-tagsinput.form-control input::-webkit-input-placeholder {
+  color: #777;
+}
+.bootstrap-tagsinput input:focus {
+  border: none;
+  box-shadow: none;
+}
+.bootstrap-tagsinput .tag {
+  margin-right: 2px;
+  color: white;
+}
+.bootstrap-tagsinput .tag [data-role="remove"] {
+  margin-left: 8px;
+  cursor: pointer;
+}
+.bootstrap-tagsinput .tag [data-role="remove"]:after {
+  content: "x";
+  padding: 0px 2px;
+}
+.bootstrap-tagsinput .tag [data-role="remove"]:hover {
+  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
+}
+.bootstrap-tagsinput .tag [data-role="remove"]:hover:active {
+  box-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
+}