Move to Postgresql DB.

Pour facilité l'aspect "PRO", et la perf, on bascule sur PostGreSQL. Les
hébergeurs propose en général cette base.

.gitignore

@@ -8,3 +8,4 @@ dump.rdb
 *.swp
 public/exercice
 public/uploads
+.env

Gemfile

@@ -3,7 +3,7 @@ source 'https://rubygems.org'
 ruby '2.1.2'
 
 gem 'rails', '4.1.1'
-gem 'sqlite3'
+gem 'pg'
 
 gem 'sass-rails', '~> 4.0.3'
 gem 'uglifier', '>= 1.3.0'
@@ -29,6 +29,8 @@ gem 'nested_form'
 
 gem 'bcrypt'
 
+gem 'dotenv-rails', :groups => [:development, :test]
+
 group :development do
   gem 'spring'
   gem 'rails-clean-logs'

Gemfile.lock

@@ -69,6 +69,8 @@ GEM
     dotenv (0.11.1)
       dotenv-deployment (~> 0.0.2)
     dotenv-deployment (0.0.2)
+    dotenv-rails (0.11.1)
+      dotenv (= 0.11.1)
     erubis (2.7.0)
     execjs (2.2.0)
     factory_girl (4.4.0)
@@ -108,6 +110,7 @@ GEM
     nested_form (0.3.2)
     nokogiri (1.6.3.1)
       mini_portile (= 0.6.0)
+    pg (0.17.1)
     polyglot (0.3.5)
     pry (0.9.12.6)
       coderay (~> 1.0)
@@ -175,7 +178,6 @@ GEM
       actionpack (>= 3.0)
       activesupport (>= 3.0)
       sprockets (~> 2.8)
-    sqlite3 (1.3.9)
     therubyracer (0.12.1)
       libv8 (~> 3.16.14.0)
       ref
@@ -205,13 +207,15 @@ DEPENDENCIES
   coffee-rails (~> 4.0.0)
   cucumber-rails
   database_cleaner
+  dotenv-rails
   factory_girl_rails
   font-awesome-sass
   foreman
   haml
   jbuilder (~> 2.0)
   jquery-rails
   nested_form
+  pg
   pry-rescue
   rails (= 4.1.1)
   rails-clean-logs
@@ -221,7 +225,6 @@ DEPENDENCIES
   sidekiq
   sinatra (>= 1.3.0)
   spring
-  sqlite3
   therubyracer
   turbolinks
   uglifier (>= 1.3.0)

app/models/answer.rb

@@ -10,6 +10,6 @@ def is_valid?
   end
 
   def chosen_choice_ids
-    chosen_choices.split(",").map{|id| id.to_i} 
+    chosen_choices.split(",").map{|id| id.to_i}
   end
 end

db/schema.rb

@@ -13,6 +13,9 @@
 
 ActiveRecord::Schema.define(version: 20140827122851) do
 
+  # These are extensions that must be enabled in order to support this database
+  enable_extension "plpgsql"
+
   create_table "answers", force: true do |t|
     t.string  "chosen_choices"
     t.integer "question_id"
@@ -38,7 +41,7 @@
     t.integer  "user_id"
   end
 
-  add_index "essais", ["user_id"], name: "index_essais_on_user_id"
+  add_index "essais", ["user_id"], name: "index_essais_on_user_id", using: :btree
 
   create_table "exercices", force: true do |t|
     t.text     "consigne"

dotenv

@@ -0,0 +1 @@
+DATABASE_PASSWORD="something"

test/models/answer_test.rb

@@ -17,7 +17,7 @@ class AnswerTest < ActiveSupport::TestCase
   test "valid if question with one valid choice" do
     question = FactoryGirl.create(:question)
     FactoryGirl.create(:choice, valid_answer: true, question: question)
-    answer = FactoryGirl.create(:answer, chosen_choices: "1", question: question) 
+    answer = FactoryGirl.create(:answer, chosen_choices: "1", question: question)
     assert_equal true, answer.is_valid?
   end
 
@@ -30,15 +30,15 @@ class AnswerTest < ActiveSupport::TestCase
     question = FactoryGirl.create(:question)
     FactoryGirl.create(:choice, valid_answer: true, question: question)
     FactoryGirl.create(:choice, valid_answer: true, question: question)
-    answer = FactoryGirl.create(:answer, chosen_choices: "2", question: question) 
+    answer = FactoryGirl.create(:answer, chosen_choices: "2", question: question)
     assert ! answer.is_valid?
   end
 
   test "valid for a question with one invalid choice amongs 2" do
     question = FactoryGirl.create(:question)
     FactoryGirl.create(:choice, valid_answer: false, question: question)
     FactoryGirl.create(:choice, valid_answer: true, question: question)
-    answer = FactoryGirl.create(:answer, chosen_choices: "2", question: question) 
+    answer = FactoryGirl.create(:answer, chosen_choices: "2", question: question)
     assert answer.is_valid?
   end
 end