Add Images table with paperclip attachment columns

db/migrate/20170627113331_create_images.rb

@@ -0,0 +1,14 @@
+class CreateImages < ActiveRecord::Migration
+  def up
+    create_table :images do |t|
+      t.references :imageable, polymorphic: true, index: true
+      t.string :title, limit: 80
+      t.timestamps null: false
+    end
+    add_attachment :images, :attachment
+  end
+
+  def down
+    remove_attachment :images, :attachment
+  end
+end

db/schema.rb

@@ -388,6 +388,20 @@ ActiveRecord::Schema.define(version: 20170918231410) do
 
   add_index "identities", ["user_id"], name: "index_identities_on_user_id", using: :btree
 
+  create_table "images", force: :cascade do |t|
+    t.integer  "imageable_id"
+    t.string   "imageable_type"
+    t.string   "title",                   limit: 80
+    t.datetime "created_at",                         null: false
+    t.datetime "updated_at",                         null: false
+    t.string   "attachment_file_name"
+    t.string   "attachment_content_type"
+    t.integer  "attachment_file_size"
+    t.datetime "attachment_updated_at"
+  end
+
+  add_index "images", ["imageable_type", "imageable_id"], name: "index_images_on_imageable_type_and_imageable_id", using: :btree
+
   create_table "legacy_legislations", force: :cascade do |t|
     t.string   "title"
     t.text     "body"