#36 - An Event has many years

.gitignore

@@ -17,6 +17,7 @@
 /tmp/*
 !/log/.keep
 !/tmp/.keep
+examples.txt
 
 # Ignore Byebug command history file.
 .byebug_history

README.md

@@ -148,6 +148,12 @@ All of the tests can be run with:
 bundle exec rake
 ```
 
+or to run only the failing (Rspec) examples
+
+```bash
+bundle exec rspec --only-failures
+```
+
 To set up the test environment, run:
 
 ```bash

app/assets/stylesheets/application.css

@@ -73,14 +73,32 @@ ul .inline {
   margin-top: 40px;
 }
 
-select#submission_event_id {
+select#submission_event_instance_id {
   display: block;
 }
 
 .g-recaptcha {
   margin-bottom: 1.5rem;
 }
 
+/**
+ * .fieldset redeclares some Normalize styles in a .fieldset class
+ * so they can be used to override Skeleton styles
+ */
+
+fieldset.fieldset {
+  border: 1px solid #c0c0c0;
+  border-radius: 3px;
+  margin: 0 2px;
+  margin-bottom: 15px;
+  padding: 0.5em 0.8em 0.75em;
+}
+
+fieldset.fieldset legend {
+  border: 0; /* 1 */
+  padding: .2em;
+}
+
 @media only screen and (min-width: 1000px) {
   .align-right {
     position: absolute;

app/controllers/event_instances_controller.rb

@@ -0,0 +1,25 @@
+class EventInstancesController < ApplicationController
+  def new
+    @event_instance = EventInstance.new
+  end
+
+  def create
+    @event_instance = EventInstance.new(event_instance_params)
+    if verify_recaptcha(model: @event_instance) && @event_instance.save
+      redirect_to speakers_path
+    else
+      flash[:alert] = 'Failed to save event'
+      redirect_to new_event_instance_path
+    end
+  end
+
+  def show
+    @event_instance = EventInstance.find(params[:id])
+  end
+
+  private
+
+  def event_instance_params
+    params.require(:event_instance).permit(:event_id, :new_parent_event_name, :year)
+  end
+end

app/controllers/events_controller.rb

@@ -1,29 +1,10 @@
 class EventsController < ApplicationController
-  def new
-    @event = Event.new
-  end
-
-  def create
-    @event = Event.new(event_params)
-    if verify_recaptcha(model: @event) && @event.save
-      redirect_to speakers_path
-    else
-      flash[:alert] = 'Failed to save event'
-      redirect_to new_event_path
-    end
-  end
 
   def index
-    @events = Event.all.order('name ASC, year ASC')
+    @events = Event.all.order('name ASC')
   end
 
   def show
     @event = Event.find(params[:id])
   end
-
-  private
-
-  def event_params
-    params.require(:event).permit(:name, :year)
-  end
 end

app/controllers/submissions_controller.rb

@@ -2,7 +2,7 @@ class SubmissionsController < ApplicationController
   def new
     @proposal = Proposal.find(params[:proposal])
     @submission = Submission.new(proposal_id: @proposal.id)
-    @events = Event.all.order('name ASC, year ASC')
+    @events = Event.all.order('name ASC')
   end
 
   def create
@@ -18,6 +18,6 @@ def create
   private
 
   def submission_params
-    params.require(:submission).permit(:event_id, :proposal_id, :result).to_h
+    params.require(:submission).permit(:event_instance_id, :proposal_id, :result).to_h
   end
 end

app/models/event.rb

@@ -1,12 +1,8 @@
 class Event < ApplicationRecord
-  validates_presence_of :name
-  validates_presence_of :year
-  validates_numericality_of :year, only_integer: true
-  validates_uniqueness_of :name, scope: :year
+  validates :name, presence: true, uniqueness: { case_insensitive: true }
 
-  has_many :submissions
-
-  def name_and_year
-    "#{name} #{year}"
-  end
+  has_many :instances, foreign_key: :event_id,
+                       class_name:  'EventInstance',
+                       dependent:   :destroy
+  has_many :submissions, through: :instances
 end

app/models/event_instance.rb

@@ -0,0 +1,41 @@
+class EventInstance < ApplicationRecord
+  # Virtual attribute for the parent event's name in case it is new
+  attr_accessor :new_parent_event_name
+
+  belongs_to :event
+  has_many   :submissions
+
+  default_scope { order :year }
+
+  before_validation :set_parent_event
+
+  validates :event, presence: true
+  validates :year, uniqueness:   { scope: :event, message: 'should happen once per year' },
+                   numericality: { only_integer: true }
+
+  def name_and_year
+    "#{event.name} #{year}"
+  end
+
+  private
+
+  def set_parent_event
+    if received_bad_event_params
+      errors.add(:base, 'choose either an existing event or to create a new one')
+    else
+      event || create_event!(name: new_parent_event_name)
+    end
+  end
+
+  def received_bad_event_params
+    received_both_new_and_existing_events || received_neither_new_nor_existing_events
+  end
+
+  def received_both_new_and_existing_events
+    event && new_parent_event_name.present?
+  end
+
+  def received_neither_new_nor_existing_events
+    event.nil? && new_parent_event_name.blank?
+  end
+end

app/models/submission.rb

@@ -1,8 +1,8 @@
 class Submission < ApplicationRecord
-  belongs_to :event
+  belongs_to :event_instance
   belongs_to :proposal
 
-  validates_presence_of :event
+  validates_presence_of :event_instance
   validates_presence_of :proposal
   validates_presence_of :result
 

app/views/event_instances/new.html.erb

@@ -0,0 +1,32 @@
+<h3>Add an event</h3>
+
+<%= form_for @event_instance do |f| %>
+
+  <div class="row">
+    <fieldset class="fieldset">
+      <legend>Event</legend>
+      <%= f.label :event, "Choose an existing event" %>
+      <%= f.collection_select(:event_id, Event.all, :id, :name, prompt: "Add year to an existing event") %>
+
+      <p>&mdash; or &mdash;</p>
+
+      <%= f.label :new_parent_event_name, 'Name a new event' %>
+      <%= f.text_field :new_parent_event_name %>
+    </fieldset>
+  </div>
+
+  <div class="row">
+    <%= f.label :year %>
+    <%= f.text_field :year %>
+  </div>
+
+  <div class="row">
+    <%= recaptcha_tags %>
+  </div>
+
+  <div class="row">
+    <%= f.submit 'Add event' %>
+  </div>
+<% end %>
+
+<p><%= link_to 'Back to Speaker Directory', speakers_path %></p>

app/views/event_instances/show.html.erb

@@ -0,0 +1,4 @@
+<h3><%= link_to @event_instance.event.name, @event_instance.event %> <%= @event_instance.year %></h3>
+
+<h5>Proposals</h5>
+<%= render partial: 'shared/instance_submissions', locals: { instance: @event_instance } %>

app/views/events/index.html.erb

@@ -1,5 +1,5 @@
 <h3>Conferences</h3>
 
 <% @events.each do |event| %>
-  <p><%= link_to event.name_and_year, event %></p>
+  <p><%= link_to event.name, event %></p>
 <% end %>

app/views/events/show.html.erb

@@ -1,10 +1,12 @@
-<h3><%= @event.name_and_year %></h3>
+<h3><%= @event.name %></h3>
 
 <h5>Proposals</h5>
-<% @event.submissions.each do |submission| %>
-  <p>
-    <%= link_to submission.proposal.title, submission.proposal %> -
-    <%= link_to submission.proposal.speaker.name, submission.proposal.speaker %> -
-    <%= submission.result.capitalize %>
-  </p>
+
+<%-# Output instances, with the most recent first -%>
+<% instances = @event.instances.sort_by { |i| -i.year } %>
+<% instances.each do |instance| %>
+  <div id="<%= @event.name.parameterize %>-<%= instance.year %>">
+    <h6><%= instance.year %></h6>
+    <%= render partial: 'shared/instance_submissions', locals: { instance: instance } %>
+  </div>
 <% end %>

app/views/layouts/application.html.erb

@@ -24,7 +24,7 @@
             <li><%= link_to 'Speakers', speakers_path %></li>
             <li><%= link_to 'Add a speaker', new_speaker_path %></li>
             <li><%= link_to 'Add a proposal', new_proposal_path %></li>
-            <li><%= link_to 'Add an event', new_event_path %></li>
+            <li><%= link_to 'Add an event', new_event_instance_path %></li>
           </div>
         </ul>
       </div>

app/views/proposals/show.html.erb

@@ -13,7 +13,7 @@
     <h4>Submissions </h4>
     <% @proposal.submissions.each do |submission| %>
       <p>
-        <%= link_to submission.event.name_and_year, submission.event %> -
+        <%= link_to submission.event_instance.name_and_year, submission.event_instance %> -
         <%= submission.result.capitalize %>
       </p>
   <% end %>

app/views/shared/_instance_submissions.html.erb

@@ -0,0 +1,11 @@
+<%-# Sort submissions by title before sorting by result -%>
+<% submissions = instance.submissions.sort_by { |s| s.proposal.title } %>
+
+<% submissions.sort_by(&:result).each do |submission| %>
+  <p>
+    <%= link_to submission.proposal.title, submission.proposal %> -
+    <%= link_to submission.proposal.speaker.name, submission.proposal.speaker %> -
+    <%= submission.result.capitalize %>
+  </p>
+<% end %>
+

app/views/submissions/new.html.erb

@@ -2,7 +2,7 @@
 
 <%= form_for @submission, url: {action: 'create'} do |f| %>
   <%= f.hidden_field(:proposal_id, value: @proposal.id) %>
-  <%= f.collection_select(:event_id, @events, :id, :name_and_year) %>
+  <%= f.grouped_collection_select(:event_instance_id, @events, :instances, :name, :id, :name_and_year) %>
   <%= f.label(:result_accepted, "Accepted") %>
   <%= f.radio_button(:result, :accepted) %>
   <%= f.label(:result_rejected, "Rejected") %>

config/routes.rb

@@ -3,7 +3,8 @@
   root 'pages#homepage'
 
   resources :speakers
-  resources :proposals, only: [:new, :create, :show, :edit, :update]
-  resources :submissions, only: [:new, :create]
-  resources :events
+  resources :proposals,       only: [:new, :create, :show, :edit, :update]
+  resources :submissions,     only: [:new, :create]
+  resources :events,          only: [:index, :show]
+  resources :event_instances, only: [:new, :create, :show]
 end