Recipes are now grouped by tags. View should use a presenter. See #2.

app/controllers/recipes_controller.rb

@@ -4,7 +4,9 @@ class RecipesController < ApplicationController
   # GET /recipes
   # GET /recipes.json
   def index
-    @recipes = Recipe.all
+    # list recipes grouped by tag
+    #TODO Building a presenter here, would clean up the view. See issue #2.
+    @tags = RocketTag::Tag.all
   end
 
   # GET /recipes/1

app/models/recipe.rb

@@ -1,6 +1,7 @@
 class Recipe < ActiveRecord::Base
 
   include Votable
+  attr_taggable :topics
 
   has_and_belongs_to_many :projects, join_table: :recipes_projects
 

app/views/recipes/index.html.haml

@@ -2,14 +2,14 @@
   = link_to 'New Recipe', new_recipe_path
 
 %section#recipes
-  - @recipes.each do |recipe|
-    %article
-      %h2= link_to recipe.name, recipe
-      .description= recipe.description
-      .actions
-        = link_to 'Edit', edit_recipe_path(recipe)
-        = link_to 'Destroy', recipe, method: :delete, data: {confirm: 'Are you sure?'}
-
-
-
-
+  - @tags.each do |tag|
+    %section{id: tag.name.parameterize('_'), class: 'tag'}
+      %h1= tag.name
+      - tag.taggings.each do |tagging|
+        - recipe = tagging.taggable
+        %article
+          %h3= link_to recipe.name, recipe
+          .description= recipe.description
+          .actions
+            = link_to 'Edit', edit_recipe_path(recipe)
+            = link_to 'Destroy', recipe, method: :delete, data: {confirm: 'Are you sure?'}

test/acceptance/tagging_test.rb

@@ -0,0 +1,18 @@
+require 'test_helper'
+require 'tag_steps'
+
+feature "Recipe Topic Tags" do
+  include TagSteps
+
+  given(:recipe) { recipes(:one) }
+
+  scenario "tagging a recipe makes it appear under that tag section" do
+    tag_name = "Planning Tools & Disaster Management"
+    tag_as_id = tag_name.parameterize('_')
+    tag_recipe(tag_name)
+    visit recipes_path
+    within "##{tag_as_id}.tag" do
+      assert_content(recipe.name)
+    end
+  end
+end

test/tag_steps.rb

@@ -0,0 +1,8 @@
+module TagSteps
+  def tag_recipe(tag)
+    recipe.topics = [tag]
+    recipe.save!
+    recipe.reload
+    recipe.topics.must_include(tag.downcase)
+  end
+end