Between Meals (Inside)

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Gonna be a bit brief today as I was presenting at the B'More on Rails users' group tonight. Still, I must make my daily offering to the chain gods, lest I fall into disfavor with them.

I left off last night with a failing Cucumber scenario:

cstrom@jaynestown:~/repos/eee-code$ cucumber features -n -s "Navigating between meals"
Sinatra::Test is deprecated; use Rack::Test instead.
Feature: Browse Meals

  So that I can find meals made on special occasions
  As a person interested in finding meals
  I want to browse meals by date

  Scenario: Navigating between meals
    Given a "Pumpkin is a Very Exciting Vegetable" meal enjoyed on December 3, 2008
    And a "Star Wars: The Dinner" meal enjoyed on February 28, 2009
    And a "Focaccia! The Dinner" meal enjoyed on March 3, 2009
    When I view the "Focaccia! The Dinner" meal
    Then I should see the "Focaccia! The Dinner" title
    When I click "Star Wars: The Dinner"
      Could not find link with text or title or id "Star Wars: The Dinner" (Webrat::NotFoundError)
      features/browse_meals.feature:61:in `When I click "Star Wars: The Dinner"'
    Then I should see the "Star Wars: The Dinner" title
    When I click "Pumpkin is a Very Exciting Vegetable"
    Then I should see the "Pumpkin is a Very Exciting Vegetable" title
    When I click "Star Wars: The Dinner"
    Then I should see the "Star Wars: The Dinner" title
    When I click "Focaccia! The Dinner"
    Then I should see the "Focaccia! The Dinner" title

1 scenario
1 failed step
7 skipped steps
5 passed steps

For this, I will need a another CouchDB view that returns a date ordered list of meals:

{
  "views": {
...
    "by_date": {
      "map": "function (doc) {
        if (doc['type'] == 'Meal') {
          emit(doc['date'], [doc['_id'], doc['title']]);
        }
      }"
    },
...
  }
}

I still have yet to find a way to drive the development of CouchDB Javascript views by example, so I will rely on the Cucumber scenario to verify that view. For now, I will use RSpec to describe how I want to use it in the meal Haml spec:

describe "meal.haml" do
  before(:each) do
    @title  = "Meal Title"
    @summary = "Meal Summary"
    @description = "Meal Description"
    @year = 2009
    @month = 5
    assigns[:meal] = @meal = {
      'date'        => "%d-%02d-31" % [@year, @month],
      'title'       => @title,
      'summary'     => @summary,
      'description' => @description,
      'menu'        => ["Peanut Butter and Jelly Sandwich"]
    }
    assigns[:meals_by_date] = [{"key" => "2009-05-15", "value" => []},
                               {"key" => "2009-05-31", "value" => []}]
  end
...
  it "should link to previous meal" do
    render("/views/meal.haml")
    response.should have_selector("a", :href => "/meals/2009/05/15")
  end
...
end

I already have a helper that pulls adjacent dates out of CouchDB views, I re-use this to implement that example:

...
%h1
  = @meal['title']

%div.navigation
  =link_to_adjacent_view_date(@meal['date'], @meals_by_date, :previous => true)
  |
  =link_to_adjacent_view_date(@meal['date'], @meals_by_date)
...

A CouchDB view and a simple implementation are enough for me to satisfy the gods tonight. I will pick back up tomorrow by linking humanized dates (it is now linking text like "2009-06-09") and then working my way back out to the Cucumber scenario to see if I am done with this scenario.
(commit)