Messages to completions conversion

db/migrate/20250515061619_add_author_to_message.rb

@@ -0,0 +1,12 @@
+class AddAuthorToMessage < ActiveRecord::Migration[8.0]
+  def change
+    add_column :messages, :author, :string
+
+    Message.find_each do |message|
+      message.author = "Unknown"
+      message.save
+    end
+
+    change_column_null :messages, :author, true
+  end
+end

db/migrate/20250515062154_add_display_time_to_message.rb

@@ -0,0 +1,12 @@
+class AddDisplayTimeToMessage < ActiveRecord::Migration[8.0]
+  def change
+    add_column :messages, :display_time, :string
+
+    Message.find_each do |message|
+      message.display_time = "12:30"
+      message.save
+    end
+
+    change_column_null :messages, :display_time, true
+  end
+end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[8.0].define(version: 2025_05_11_173749) do
+ActiveRecord::Schema[8.0].define(version: 2025_05_15_062154) do
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
@@ -92,6 +92,8 @@ ActiveRecord::Schema[8.0].define(version: 2025_05_11_173749) do
     t.string "text", null: false
     t.datetime "created_at", null: false
     t.datetime "updated_at", null: false
+    t.string "author"
+    t.string "display_time"
     t.index ["contest_id"], name: "index_messages_on_contest_id"
   end