app/controllers/activities_controller.rb


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class ActivitiesController < ApplicationController
  def show
    @activity = Activity.find(params[:id])
  end

  def start
    @activity = Activity.find(params[:id])
    if current_char.can_do_activity?(@activity)
      current_char.start_activity(@activity)
      redirect_to action: :show
    else
      flash[:alert] = "You can't do that. Make sure you have the items and meet the requirements."
      redirect_to character_path(current_char)
    end
  end
end