Enable soft_deletion of Poll::Question::Translations

db/migrate/20190121123230_add_hidden_at_to_poll_question_translations.rb

@@ -0,0 +1,6 @@
+class AddHiddenAtToPollQuestionTranslations < ActiveRecord::Migration[4.2]
+  def change
+    add_column :poll_question_translations, :hidden_at, :datetime
+    add_index :poll_question_translations, :hidden_at
+  end
+end

db/schema.rb

@@ -1161,6 +1161,8 @@ ActiveRecord::Schema.define(version: 20190607160900) do
     t.datetime "created_at",       null: false
     t.datetime "updated_at",       null: false
     t.string   "title"
+    t.datetime "hidden_at"
+    t.index ["hidden_at"], name: "index_poll_question_translations_on_hidden_at", using: :btree
     t.index ["locale"], name: "index_poll_question_translations_on_locale", using: :btree
     t.index ["poll_question_id"], name: "index_poll_question_translations_on_poll_question_id", using: :btree
   end

spec/models/poll/question_spec.rb

@@ -3,6 +3,10 @@ require "rails_helper"
 RSpec.describe Poll::Question, type: :model do
   let(:poll_question) { build(:poll_question) }
 
+  describe "Concerns" do
+    it_behaves_like "acts as paranoid", :poll_question
+  end
+
   describe "#poll_question_id" do
     it "is invalid if a poll is not selected" do
       poll_question.poll_id = nil