User story 2

Gemfile.lock

@@ -38,67 +38,66 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.6.0)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
     arel (8.0.0)
-    bindex (0.7.0)
-    builder (3.2.3)
-    capybara (3.25.0)
+    bindex (0.8.1)
+    builder (3.2.4)
+    capybara (3.34.0)
       addressable
       mini_mime (>= 0.1.3)
       nokogiri (~> 1.8)
       rack (>= 1.6.0)
       rack-test (>= 0.6.3)
       regexp_parser (~> 1.5)
       xpath (~> 3.2)
-    coderay (1.1.2)
+    coderay (1.1.3)
     coffee-rails (4.2.2)
       coffee-script (>= 2.2.0)
       railties (>= 4.0.0)
     coffee-script (2.4.1)
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.1.5)
-    crass (1.0.4)
-    database_cleaner (1.7.0)
-    diff-lcs (1.3)
-    docile (1.3.2)
-    erubi (1.8.0)
+    concurrent-ruby (1.1.7)
+    crass (1.0.6)
+    database_cleaner (1.8.5)
+    diff-lcs (1.4.4)
+    docile (1.3.3)
+    erubi (1.10.0)
     execjs (2.7.0)
-    ffi (1.11.1)
+    ffi (1.14.2)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
-    i18n (1.6.0)
+    i18n (1.8.5)
       concurrent-ruby (~> 1.0)
-    jbuilder (2.9.1)
-      activesupport (>= 4.2.0)
-    json (2.2.0)
-    launchy (2.4.3)
-      addressable (~> 2.3)
+    jbuilder (2.10.1)
+      activesupport (>= 5.0.0)
+    launchy (2.5.0)
+      addressable (~> 2.7)
     listen (3.1.5)
       rb-fsevent (~> 0.9, >= 0.9.4)
       rb-inotify (~> 0.9, >= 0.9.7)
       ruby_dep (~> 1.2)
-    loofah (2.2.3)
+    loofah (2.8.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
     mail (2.7.1)
       mini_mime (>= 0.1.1)
-    method_source (0.9.2)
-    mini_mime (1.0.1)
+    method_source (1.0.0)
+    mini_mime (1.0.2)
     mini_portile2 (2.4.0)
-    minitest (5.11.3)
-    nio4r (2.3.1)
-    nokogiri (1.10.3)
+    minitest (5.14.2)
+    nio4r (2.5.4)
+    nokogiri (1.10.10)
       mini_portile2 (~> 2.4.0)
     pg (0.21.0)
-    pry (0.12.2)
-      coderay (~> 1.1.0)
-      method_source (~> 0.9.0)
-    public_suffix (3.1.1)
-    puma (3.12.1)
-    rack (2.0.7)
+    pry (0.13.1)
+      coderay (~> 1.1)
+      method_source (~> 1.0)
+    public_suffix (4.0.6)
+    puma (3.12.6)
+    rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
     rails (5.1.7)
@@ -116,36 +115,36 @@ GEM
     rails-dom-testing (2.0.3)
       activesupport (>= 4.2.0)
       nokogiri (>= 1.6)
-    rails-html-sanitizer (1.0.4)
-      loofah (~> 2.2, >= 2.2.2)
+    rails-html-sanitizer (1.3.0)
+      loofah (~> 2.3)
     railties (5.1.7)
       actionpack (= 5.1.7)
       activesupport (= 5.1.7)
       method_source
       rake (>= 0.8.7)
       thor (>= 0.18.1, < 2.0)
-    rake (12.3.2)
-    rb-fsevent (0.10.3)
-    rb-inotify (0.10.0)
+    rake (13.0.3)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
       ffi (~> 1.0)
-    regexp_parser (1.5.1)
-    rspec-core (3.8.2)
-      rspec-support (~> 3.8.0)
-    rspec-expectations (3.8.4)
+    regexp_parser (1.8.2)
+    rspec-core (3.10.0)
+      rspec-support (~> 3.10.0)
+    rspec-expectations (3.10.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-mocks (3.8.1)
+      rspec-support (~> 3.10.0)
+    rspec-mocks (3.10.0)
       diff-lcs (>= 1.2.0, < 2.0)
-      rspec-support (~> 3.8.0)
-    rspec-rails (3.8.2)
-      actionpack (>= 3.0)
-      activesupport (>= 3.0)
-      railties (>= 3.0)
-      rspec-core (~> 3.8.0)
-      rspec-expectations (~> 3.8.0)
-      rspec-mocks (~> 3.8.0)
-      rspec-support (~> 3.8.0)
-    rspec-support (3.8.2)
+      rspec-support (~> 3.10.0)
+    rspec-rails (4.0.1)
+      actionpack (>= 4.2)
+      activesupport (>= 4.2)
+      railties (>= 4.2)
+      rspec-core (~> 3.9)
+      rspec-expectations (~> 3.9)
+      rspec-mocks (~> 3.9)
+      rspec-support (~> 3.9)
+    rspec-support (3.10.0)
     ruby_dep (1.5.0)
     sass (3.7.4)
       sass-listen (~> 4.0.0)
@@ -158,26 +157,27 @@ GEM
       sprockets (>= 2.8, < 4.0)
       sprockets-rails (>= 2.0, < 4.0)
       tilt (>= 1.1, < 3)
-    shoulda-matchers (4.1.0)
+    shoulda-matchers (4.4.1)
       activesupport (>= 4.2.0)
-    simplecov (0.17.0)
+    simplecov (0.20.0)
       docile (~> 1.1)
-      json (>= 1.8, < 3)
-      simplecov-html (~> 0.10.0)
-    simplecov-html (0.10.2)
+      simplecov-html (~> 0.11)
+      simplecov_json_formatter (~> 0.1)
+    simplecov-html (0.12.3)
+    simplecov_json_formatter (0.1.2)
     sprockets (3.7.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
-    sprockets-rails (3.2.1)
+    sprockets-rails (3.2.2)
       actionpack (>= 4.0)
       activesupport (>= 4.0)
       sprockets (>= 3.0.0)
-    thor (0.20.3)
+    thor (1.0.1)
     thread_safe (0.3.6)
-    tilt (2.0.9)
-    tzinfo (1.2.5)
+    tilt (2.0.10)
+    tzinfo (1.2.9)
       thread_safe (~> 0.1)
-    uglifier (4.1.20)
+    uglifier (4.2.0)
       execjs (>= 0.3.0, < 3)
     web-console (3.7.0)
       actionview (>= 5.0)
@@ -186,7 +186,7 @@ GEM
       railties (>= 5.0)
     websocket-driver (0.6.5)
       websocket-extensions (>= 0.1.0)
-    websocket-extensions (0.1.4)
+    websocket-extensions (0.1.5)
     xpath (3.2.0)
       nokogiri (~> 1.8)
 
@@ -213,4 +213,4 @@ DEPENDENCIES
   web-console (>= 3.3.0)
 
 BUNDLED WITH
-   2.0.2
+   2.1.4

app/controllers/astronauts_controller.rb

@@ -0,0 +1,5 @@
+class AstronautsController < ApplicationController
+  def index
+    @astronauts = Astronaut.all
+  end
+end

app/models/astronaut.rb

@@ -1,3 +1,9 @@
 class Astronaut < ApplicationRecord
   validates_presence_of :name, :age, :job
+  has_many :astronaut_missions
+  has_many :missions, through: :astronaut_missions
+
+  def self.average_age
+    average(:age)
+  end
 end

app/models/astronaut_mission.rb

@@ -1,3 +1,4 @@
 class AstronautMission < ApplicationRecord
-
+  belongs_to :astronaut
+  belongs_to :mission
 end

app/models/mission.rb

@@ -1,3 +1,5 @@
 class Mission < ApplicationRecord
   validates_presence_of :title, :time_in_space
+  has_many :astronaut_missions
+  has_many :astronauts, through: :astronaut_missions
 end

app/views/astronauts/index.html.erb

@@ -0,0 +1,9 @@
+<h1>Astronauts</h1>
+<h2>Average age: <%= @astronauts.average_age %></h2>
+<% @astronauts.each do |astronaut| %>
+  <section id="astronaut-<%= astronaut.id %>">
+    <h2><%= astronaut.name %></h2>
+    <p>Age: <%= astronaut.age %></p>
+    <p>Job: <%= astronaut.job %></p>
+  </section>
+<% end %>

config/routes.rb

@@ -1,3 +1,5 @@
 Rails.application.routes.draw do
   # For details on the DSL available within this file, see http://guides.rubyonrails.org/routing.html
+
+  resources :astronauts, only: [:index]
 end

db/schema.rb

@@ -0,0 +1,38 @@
+# This file is auto-generated from the current state of the database. Instead
+# of editing this file, please use the migrations feature of Active Record to
+# incrementally modify your database, and then regenerate this schema definition.
+#
+# Note that this schema.rb definition is the authoritative source for your
+# database schema. If you need to create the application database on another
+# system, you should be using db:schema:load, not running all the migrations
+# from scratch. The latter is a flawed and unsustainable approach (the more migrations
+# you'll amass, the slower it'll run and the greater likelihood for issues).
+#
+# It's strongly recommended that you check this file into your version control system.
+
+ActiveRecord::Schema.define(version: 20180904152506) do
+
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "plpgsql"
+
+  create_table "astronaut_missions", force: :cascade do |t|
+    t.bigint "astronaut_id"
+    t.bigint "mission_id"
+    t.index ["astronaut_id"], name: "index_astronaut_missions_on_astronaut_id"
+    t.index ["mission_id"], name: "index_astronaut_missions_on_mission_id"
+  end
+
+  create_table "astronauts", force: :cascade do |t|
+    t.string "name"
+    t.integer "age"
+    t.string "job"
+  end
+
+  create_table "missions", force: :cascade do |t|
+    t.string "title"
+    t.integer "time_in_space"
+  end
+
+  add_foreign_key "astronaut_missions", "astronauts"
+  add_foreign_key "astronaut_missions", "missions"
+end

db/seeds.rb

@@ -5,3 +5,17 @@
 #
 #   movies = Movie.create([{ name: 'Star Wars' }, { name: 'Lord of the Rings' }])
 #   Character.create(name: 'Luke', movie: movies.first)
+
+astro1 = Astronaut.create!(name: "Bob", age: 34, job: "Commander")
+astro2 = Astronaut.create!(name: "Jill", age: 34, job: "Private")
+astro3 = Astronaut.create!(name: "Joe", age: 34, job: "Colonel")
+astro4 = Astronaut.create!(name: "Has", age: 34, job: "Lieutenant")
+
+mission1 = Mission.create!(title: "Mission to Mars", time_in_space: 20)
+mission2 = Mission.create!(title: "Mission to Moon", time_in_space: 1)
+mission3 = Mission.create!(title: "Mission to Sun", time_in_space: 80)
+
+AstronautMission.create!(astronaut: astro1, mission: mission1)
+AstronautMission.create!(astronaut: astro1, mission: mission2)
+AstronautMission.create!(astronaut: astro2, mission: mission3)
+AstronautMission.create!(astronaut: astro3, mission: mission3)

spec/features/astronauts/index_spec.rb

@@ -0,0 +1,57 @@
+require "rails_helper"
+
+describe "As a visitor" do
+  describe "When I visit '/astronauts'" do
+    before :each do
+      @astro1 = Astronaut.create!(name: "Bob", age: 34, job: "Commander")
+      @astro2 = Astronaut.create!(name: "Jill", age: 34, job: "Private")
+      @astro3 = Astronaut.create!(name: "Joe", age: 34, job: "Colonel")
+      @astro4 = Astronaut.create!(name: "Has", age: 34, job: "Lieutenant")
+
+      @mission1 = Mission.create!(title: "Mission to Mars", time_in_space: 20)
+      @mission2 = Mission.create!(title: "Mission to Moon", time_in_space: 1)
+      @mission3 = Mission.create!(title: "Mission to Sun", time_in_space: 80)
+
+      @w = AstronautMission.create!(astronaut: @astro1, mission: @mission1)
+      @x = AstronautMission.create!(astronaut: @astro1, mission: @mission2)
+      @y = AstronautMission.create!(astronaut: @astro2, mission: @mission3)
+      @z = AstronautMission.create!(astronaut: @astro3, mission: @mission3)
+    end
+
+    it "I see a list of astronauts with the following info:" do
+      visit astronauts_path
+
+      expect(page).to have_content("Astronauts")
+
+      within("#astronaut-#{@astro1.id}") do
+        expect(page).to have_content(@astro1.name)
+        expect(page).to have_content("Age: #{@astro1.age}")
+        expect(page).to have_content("Job: #{@astro1.job}")
+      end
+
+      within("#astronaut-#{@astro2.id}") do
+        expect(page).to have_content(@astro2.name)
+        expect(page).to have_content("Age: #{@astro2.age}")
+        expect(page).to have_content("Job: #{@astro2.job}")
+      end
+
+      within("#astronaut-#{@astro3.id}") do
+        expect(page).to have_content(@astro3.name)
+        expect(page).to have_content("Age: #{@astro3.age}")
+        expect(page).to have_content("Job: #{@astro3.job}")
+      end
+
+      within("#astronaut-#{@astro4.id}") do
+        expect(page).to have_content(@astro4.name)
+        expect(page).to have_content("Age: #{@astro4.age}")
+        expect(page).to have_content("Job: #{@astro4.job}")
+      end
+    end
+
+    it 'I see the average age of all astronauts.' do
+      visit astronauts_path
+
+      expect(page).to have_content("Average age: #{Astronaut.average_age}")
+    end
+  end
+end

spec/models/astronaut_mission_spec.rb

@@ -0,0 +1,11 @@
+require 'rails_helper'
+
+describe AstronautMission, type: :model do
+  describe 'Validations' do
+  end
+
+  describe 'Relationships' do
+    it { should belong_to :astronaut}
+    it { should belong_to :mission}
+  end
+end