From bbe80b1409c97a6d2032818dde8c0cc517f9747a Mon Sep 17 00:00:00 2001
From: Philipp Fischbeck <philipp.fischbeck@student.hpi.uni-potsdam.de>
Date: Mon, 15 Dec 2014 00:38:29 +0100
Subject: [PATCH] Create association of translations with their problems

---
 app/models/problem.rb                                   | 1 +
 app/models/translation.rb                               | 2 ++
 db/migrate/20141214221259_add_problem_to_translation.rb | 5 +++++
 db/schema.rb                                            | 5 ++++-
 4 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 db/migrate/20141214221259_add_problem_to_translation.rb

diff --git a/app/models/problem.rb b/app/models/problem.rb
index 4740c0b..ee70fe3 100644
--- a/app/models/problem.rb
+++ b/app/models/problem.rb
@@ -1,3 +1,4 @@
 class Problem < ActiveRecord::Base
   has_one :translation
+  has_many :translations, inverse_of: :problem
 end
diff --git a/app/models/translation.rb b/app/models/translation.rb
index 628d87e..c598631 100644
--- a/app/models/translation.rb
+++ b/app/models/translation.rb
@@ -1,4 +1,6 @@
 class Translation < ActiveRecord::Base
+  belongs_to :problem, inverse_of: :translations
+
   validates :title, :content, presence: true
   validates :title, uniqueness: true
 
diff --git a/db/migrate/20141214221259_add_problem_to_translation.rb b/db/migrate/20141214221259_add_problem_to_translation.rb
new file mode 100644
index 0000000..c598504
--- /dev/null
+++ b/db/migrate/20141214221259_add_problem_to_translation.rb
@@ -0,0 +1,5 @@
+class AddProblemToTranslation < ActiveRecord::Migration
+  def change
+    add_reference :translations, :problem, index: true
+  end
+end
diff --git a/db/schema.rb b/db/schema.rb
index 4e5eff5..f0321ed 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20141214220056) do
+ActiveRecord::Schema.define(version: 20141214221259) do
 
   create_table "problems", force: true do |t|
     t.datetime "created_at"
@@ -26,6 +26,9 @@ ActiveRecord::Schema.define(version: 20141214220056) do
     t.text     "content"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.integer  "problem_id"
   end
 
+  add_index "translations", ["problem_id"], name: "index_translations_on_problem_id"
+
 end