Add test form in development mode

This helps to test submissions in development mode

app/controllers/forms_controller.rb

@@ -1,7 +1,7 @@
 require 'google/apis/sheets_v4'
 require 'google/api_client/client_secrets'
 class FormsController < ApplicationController
-  before_action :require_login
+  before_action :require_login, except: [:form]
 
   def new
     @form = current_user.forms.build
@@ -25,6 +25,12 @@ class FormsController < ApplicationController
     end
   end
 
+  if Rails.env.development?
+    def form
+      @form = Form.find_by!(token: params[:id])
+    end
+  end
+
   private
 
   def form_params