Gemfile

@@ -29,8 +29,6 @@ gem 'jbuilder', '~> 2.7'
 gem 'bootsnap', '>= 1.4.2', require: false
 gem 'rails_12factor', group: :production
 
-gem 'rack-cors'
-
 group :development, :test do
   # Call 'byebug' anywhere in the code to stop execution and get a debugger console
   gem 'byebug', platforms: [:mri, :mingw, :x64_mingw]

Gemfile.lock

@@ -155,8 +155,6 @@ GEM
       nio4r (~> 2.0)
     racc (1.6.0)
     rack (2.2.3)
-    rack-cors (1.1.1)
-      rack (>= 2.0.0)
     rack-proxy (0.7.2)
       rack
     rack-test (1.1.0)
@@ -277,7 +275,6 @@ DEPENDENCIES
   jbuilder (~> 2.7)
   listen (~> 3.2)
   puma (~> 4.1)
-  rack-cors
   rails (~> 6.0.5)
   rails_12factor
   sass-rails (>= 6)

app/admin/messages.rb

@@ -1,18 +1,16 @@
 ActiveAdmin.register Message do
   csv do
     column :title
-    column(:name)
     column(:email)
     column(:phone)
-    column(:description)
+    column(:description)# preserve case
-    # preserve case
   end
   # See permitted parameters documentation:
   # https://github.com/activeadmin/activeadmin/blob/master/docs/2-resource-customization.md#setting-up-strong-parameters
   #
   # Uncomment all parameters which should be permitted for assignment
   #
-  permit_params :title, :name, :description, :email, :phone
+  permit_params :title, :description, :email, :phone
   #
   # or
   #

app/controllers/messages_controller.rb

@@ -4,11 +4,10 @@ class MessagesController < ApplicationController
 
   def create
     @message = Message.create(message_params)
-    render json: {}, status: :created
   end
 
   private
   def message_params
-    params.permit(:title, :phone, :description, :email, :name)
+    params.permit(:title, :phone, :description, :email)
   end
 end

config/initializers/cors.rb

@@ -1,7 +0,0 @@
-# frozen_string_literal: true
-Rails.application.config.middleware.insert_before 0, Rack::Cors do
-  allow do
-    origins '*'
-    resource '*', :headers => :any, :methods => [:get, :post, :options]
-  end
-end

db/migrate/20220525092424_add_name_to_message.rb

@@ -1,5 +0,0 @@
-class AddNameToMessage < ActiveRecord::Migration[6.0]
-  def change
-    add_column :messages, :name, :string
-  end
-end