Add message model

app/models/message.rb

@@ -0,0 +1,24 @@
+# == Schema Information
+#
+# Table name: messages
+#
+#  id           :integer          not null, primary key
+#  text         :string           not null
+#  time_seconds :integer          not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  contest_id   :integer          not null
+#
+# Indexes
+#
+#  index_messages_on_contest_id  (contest_id)
+#
+# Foreign Keys
+#
+#  contest_id  (contest_id => contests.id)
+#
+class Message < ApplicationRecord
+  belongs_to :contest
+
+  validates :text, presence: true
+end

db/migrate/20250511173749_create_messages.rb

@@ -0,0 +1,11 @@
+class CreateMessages < ActiveRecord::Migration[8.0]
+  def change
+    create_table :messages do |t|
+      t.integer :time_seconds, null: false
+      t.belongs_to :contest, null: false, foreign_key: true
+      t.string :text, null: false
+
+      t.timestamps
+    end
+  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_03_27_111835) do
+ActiveRecord::Schema[8.0].define(version: 2025_05_11_173749) do
   create_table "active_storage_attachments", force: :cascade do |t|
     t.string "name", null: false
     t.string "record_type", null: false
@@ -86,6 +86,15 @@ ActiveRecord::Schema[8.0].define(version: 2025_03_27_111835) do
     t.index ["sluggable_type", "sluggable_id"], name: "index_friendly_id_slugs_on_sluggable_type_and_sluggable_id"
   end
 
+  create_table "messages", force: :cascade do |t|
+    t.integer "time_seconds", null: false
+    t.integer "contest_id", null: false
+    t.string "text", null: false
+    t.datetime "created_at", null: false
+    t.datetime "updated_at", null: false
+    t.index ["contest_id"], name: "index_messages_on_contest_id"
+  end
+
   create_table "puzzles", force: :cascade do |t|
     t.string "name"
     t.datetime "created_at", null: false
@@ -122,6 +131,7 @@ ActiveRecord::Schema[8.0].define(version: 2025_03_27_111835) do
   add_foreign_key "completions", "puzzles"
   add_foreign_key "contestants", "contests"
   add_foreign_key "contests", "users"
+  add_foreign_key "messages", "contests"
   add_foreign_key "puzzles", "contests"
   add_foreign_key "sessions", "users"
 end

spec/factories/messages.rb

@@ -0,0 +1,26 @@
+# == Schema Information
+#
+# Table name: messages
+#
+#  id           :integer          not null, primary key
+#  text         :string           not null
+#  time_seconds :integer          not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  contest_id   :integer          not null
+#
+# Indexes
+#
+#  index_messages_on_contest_id  (contest_id)
+#
+# Foreign Keys
+#
+#  contest_id  (contest_id => contests.id)
+#
+FactoryBot.define do
+  factory :message do
+    time_seconds { 1 }
+    contest { nil }
+    text { "MyString" }
+  end
+end

spec/models/message_spec.rb

@@ -0,0 +1,24 @@
+# == Schema Information
+#
+# Table name: messages
+#
+#  id           :integer          not null, primary key
+#  text         :string           not null
+#  time_seconds :integer          not null
+#  created_at   :datetime         not null
+#  updated_at   :datetime         not null
+#  contest_id   :integer          not null
+#
+# Indexes
+#
+#  index_messages_on_contest_id  (contest_id)
+#
+# Foreign Keys
+#
+#  contest_id  (contest_id => contests.id)
+#
+require 'rails_helper'
+
+RSpec.describe Message, type: :model do
+  pending "add some examples to (or delete) #{__FILE__}"
+end