removes user_id column from User model to use idiomatic Rails automatic IDs

app/controllers/work_info_controller.rb

@@ -1,7 +1,7 @@
 # frozen_string_literal: true
 class WorkInfoController < ApplicationController
   def index
-    @user = User.find_by_user_id(params[:user_id])
+    @user = User.find_by(id: params[:user_id])
     if !(@user) || @user.admin
       flash[:error] = "Sorry, no user with that user id exists"
       redirect_to home_dashboard_index_path