games_controller.rb

# Below is the controller code from a sort of "group/party game" webapp I had worked on at one point.
# 
# It's from a Ruby on Rails application, which provides a lot of functionality out of the box
# So it might not look like "that much code" because Rails eliminates the need for writing a ton of boilerplate.
#
# I believe it at least demonstrates some understanding of model relationships and high level application design.
#
# information is broadcasted in real-time using websockets via ActionCable

class GamesController < ApplicationController
    def current_game
        if current_user.game
            render json: current_user.game
        else
            render status: :not_found
        end
    end

    def start_game
        game = current_user.game
        game.started_at = Time.now
        game.save
        GameChannel.broadcast_to(game, {game: game})
    end

    def join_game
        @game = Game.where(handle: params[:handle]).first
        begin
            @game.users << current_user
        rescue ActiveRecord::RecordNotUnique
            # don't need to do anything, user is already joined in the game
        end
    end

    def create_game
        @game = Game.new
        @game.game_type = params[:type]
        @game.owner = current_user
        @game.save

        current_user.game = @game
        current_user.save

        render json: @game.to_json
    end
end