Add an initial implementation of the Event model

Initial implementation & specs of the Event model and its children

app/models/conference.rb

@@ -7,6 +7,7 @@ class Conference < ActiveRecord::Base
   validate :end_date_is_before_start_date
 
   has_many :tracks
+  has_many :events, through: :tracks
 
   private
 

app/models/event.rb

@@ -0,0 +1,10 @@
+class Event < ActiveRecord::Base
+  validates :title, presence: true
+  validates :length, presence: true, numericality: {only_integer: true, greater_than: 0}
+  validates :abstract, presence: true
+  validates :description, presence: true
+
+  belongs_to :track
+  has_one :conference, through: :track
+  belongs_to :user
+end

app/models/lecture.rb

@@ -0,0 +1,3 @@
+class Lecture < Event
+  validates :length, numericality: {greater_than_or_equal_to: 40, less_than_or_equal_to: 45}
+end

app/models/track.rb

@@ -1,5 +1,6 @@
 class Track < ActiveRecord::Base
   belongs_to :conference
+  has_many :events
 
   validates :name, presence: true
   validates :color, presence: true, format: {with: /\A[a-f0-9]{6}\z/i}

app/models/workshop.rb

@@ -0,0 +1,3 @@
+class Workshop < Event
+  validates :length, numericality: {greater_than_or_equal_to: 30, less_than_or_equal_to: 120}
+end

db/migrate/20140810174338_create_events.rb

@@ -0,0 +1,20 @@
+class CreateEvents < ActiveRecord::Migration
+  def change
+    create_table :events do |t|
+      t.string :title, null: false
+      t.string :subtitle
+      t.string :type
+      t.integer :length, null: false, default: 45
+      t.string :language, null: false, default: 'bg_BG'
+      t.integer :state
+      t.text :abstract, null: false
+      t.text :description, null: false
+      t.text :notes
+      t.references :track, index: true
+      t.references :user, index: true
+
+      t.timestamps
+    end
+    add_index :events, :type
+  end
+end

spec/factories/events.rb

@@ -0,0 +1,27 @@
+# Read about factories at https://github.com/thoughtbot/factory_girl
+
+FactoryGirl.define do
+  factory :lecture do
+    title { |n| "Lecture #{n}" }
+    subtitle "Lorem Ipsum"
+    length 45
+    language "bg_BG"
+    abstract "An Abstract"
+    description "A Description"
+    notes "Some Notes"
+    track
+    user
+  end
+
+  factory :workshop do
+    title { |n| "Workshop #{n}" }
+    subtitle "Lorem Ipsum"
+    length 60
+    language "bg_BG"
+    abstract "An Abstract"
+    description "A Description"
+    notes "Some Notes"
+    track
+    user
+  end
+end

spec/models/lecture_spec.rb

@@ -0,0 +1,23 @@
+require 'rails_helper'
+
+RSpec.describe Lecture, :type => :model do
+  let(:event) { build :lecture }
+
+  it_behaves_like 'an event'
+
+  describe 'length' do
+    it 'must be between 40 and 45 minutes' do
+      event.length = 30
+      expect(event).to have_error_on :length
+
+      event.length = 60
+      expect(event).to have_error_on :length
+
+      event.length = 40
+      expect(event).to_not have_error_on :length
+
+      event.length = 45
+      expect(event).to_not have_error_on :length
+    end
+  end
+end

spec/models/workshop_spec.rb

@@ -0,0 +1,23 @@
+require 'rails_helper'
+
+RSpec.describe Workshop, :type => :model do
+  let(:event) { build :workshop }
+
+  it_behaves_like 'an event'
+
+  describe 'length' do
+    it 'must be between 30 and 120 minutes' do
+      event.length = 20
+      expect(event).to have_error_on :length
+
+      event.length = 240
+      expect(event).to have_error_on :length
+
+      event.length = 30
+      expect(event).to_not have_error_on :length
+
+      event.length = 120
+      expect(event).to_not have_error_on :length
+    end
+  end
+end

spec/support/shared_examples/shared_examples_for_events.rb

@@ -0,0 +1,33 @@
+RSpec.shared_examples 'an event' do
+  it 'is invalid without a title' do
+    event.title = ''
+    expect(event).to have_error_on :title
+  end
+
+  describe 'length' do
+    it 'must be present' do
+      event.length = ''
+      expect(event).to have_error_on :length
+    end
+
+    it 'must be a number' do
+      event.length = 'foo'
+      expect(event).to have_error_on :length
+    end
+
+    it 'must be larger than zero' do
+      event.length = '-10'
+      expect(event).to have_error_on :length
+    end
+  end
+
+  it 'is invalid without an abstract' do
+    event.abstract = ''
+    expect(event).to have_error_on :abstract
+  end
+
+  it 'is invalid without a description' do
+    event.description = ''
+    expect(event).to have_error_on :description
+  end
+end