copy the bot challenge here

app/controllers/registrations_controller.rb

@@ -0,0 +1,76 @@
+# frozen_string_literal: true
+
+class RegistrationsController < Devise::RegistrationsController
+  # before_action :configure_sign_up_params, only: [:create]
+  # before_action :configure_account_update_params, only: [:update]
+  prepend_before_action :authenticate_scope!, only: [:edit_email]
+
+
+  def new
+    build_resource
+    super
+  end
+  # POST /resource
+  def create
+    if message = math_check
+      flash.now.alert = message
+    end
+    super
+  end
+
+  # GET /resource/edit
+  def edit_email
+    build_resource
+    puts "EDIT"
+  end
+
+  def edit
+    build_resource
+    super
+  end
+  # PUT /resource
+  def update
+    puts "UPDATE"
+    super
+  end
+
+  # DELETE /resource
+  # def destroy
+  #   super
+  # end
+
+  protected
+
+  def math_check
+    return "no cheatin" unless bot = params[:bot]
+    return "No food" unless fudder = bot[:fudder]
+    key = fudder.to_i / 2
+    answer = bot[:challenge]
+    return "Plase enter the bot challenge" if answer.blank?
+    if( (2*key + 1).to_s != answer )
+      return "Check the maths, tip, it wasn't #{answer}"
+    end
+    nil
+  end
+
+  # If you have extra params to permit, append them to the sanitizer.
+  # def configure_sign_up_params
+  #   devise_parameter_sanitizer.permit(:sign_up, keys: [:attribute])
+  # end
+
+  # If you have extra params to permit, append them to the sanitizer.
+  # def configure_account_update_params
+  #   devise_parameter_sanitizer.permit(:account_update, keys: [:attribute])
+  # end
+
+  # The path used after sign up.
+  def after_sign_up_path_for(resource)
+    puts "after sign up"
+    super(resource)
+  end
+
+  # The path used after sign up for inactive accounts.
+  # def after_inactive_sign_up_path_for(resource)
+  #   super(resource)
+  # end
+end