add_categories.rb

class AddCategories < ActiveRecord::Migration
  def self.up
    add_column :tasks, :category, :string
  end

  def self.down
    remove_column :tasks, :category
  end
end

edit_tasks.feature

Feature: Edit Tasks

  So I can capture everything I need to do
  As a person with things to do
  I need to be able to add and edit tasks

  Scenario: Add a task with a category
    Given I am on the homepage
    When I follow "New Task"
    And I create a task "Submit TPS Reports" in category "Work Tasks"
    And I go to the homepage
    Then I should see "Submit TPS Reports"
    And I should see "Work Tasks"

  Scenario: Must Enter a Name
    Given I am on the homepage
    When I follow "New Task"
    And I press "Create"
    Then I should see "Name can't be blank"

index.html.erb

<h1>Things to Do</h1>

<table>
  <tr>
    <th>Task</th>
    <th>Category</th>
  </tr>

<% @tasks.each do |task| %>
  <tr>
    <td><%=h task.name %></td>
    <td><%=h task.category %></td>
    <td><%= link_to 'Show', task %></td>
    <td><%= link_to 'Edit', edit_task_path(task) %></td>
    <td><%= link_to 'Destroy', task, :confirm => 'Are you sure?', :method => :delete %></td>
  </tr>
<% end %>
</table>

<br />

<%= link_to 'New task', new_task_path %>

new.html.erb

<h1>New task</h1>

<% form_for(@task) do |f| %>
  <%= f.error_messages %>

  <p>
    <%= f.label :name %><br />
    <%= f.text_field :name %>
  </p>
  <p>
    <%= f.label :category %><br />
    <%= f.text_field :category %>
  </p>
  <p>
    <%= f.submit 'Create' %>
  </p>
<% end %>

<%= link_to 'Back', tasks_path %>

task.rb

class Task < ActiveRecord::Base
  validates_presence_of :name
end

tasks.rb

Given /^a task called ("[^\"]*)"$/ do |task_name|
  @task = Task.create!(:name => task_name)
end

When /^I browse the tasks page$/ do
  visit tasks_path
end

When /^the task is set to the category "([^\"]*)"$/ do |category|
  @task.category = category
  @task.save!
end

When /^I create a task "([^\"]*)" in category "([^\"]*)"$/ do |task, category|
  fill_in "Name", :with => task
  fill_in "Category", :with => category
  click_button "Create"
end

view_tasks.feature

Feature: View Tasks

  So I can see at a glance my tasks
  As a person with things to do
  I want to see a list of my tasks
  
  Scenario: Add Task to List
  
    Given a task called "Take out the trash"
    When I browse the tasks page
    Then I should see "Take out the trash"
    
  Scenario: See Tasks on Home Page
    Given a task called "Take out the trash"
    When I go to the homepage
    Then I should see "Take out the trash"

  Scenario: See Categories with Task
    Given a task called "Take out the trash"
    When the task is set to the category "Honey-Do"
    And I go to the homepage
    Then I should see "Take out the trash"
    And I should see "Honey-Do"