ECサイト完成！(rails)【いせ日記】

<a><%=link_to '詳細', admins_sales_record_path, class: "btn btn-success"%></a>
⬇️
<a><%=link_to '詳細', admins_sales_record_path(start_at: Time.current.beginning_of_month, end_at: Time.current.end_of_month), class: "btn btn-success"%></a>

Date.parse("日付")

class Admins::SalesRecordsController < Admins::ApplicationController
    
    def show
        @purchase_record_products = current_admin.products.purchase_record_products
        start_at = Date.parse(params[:start_at])
        end_at = Date.parse(params[:end_at])
        @purchase_record_products = @purchase_record_products.where(created_at: start_at..end_at)
    end
end

class Admins::SalesRecordsController < Admins::ApplicationController
    def show
      @purchase_record_products = current_admin.purchase_record_products
      if params[:start_at] && params[:end_at]
          start_at = Date.parse(params[:start_at])
          end_at = Date.parse(params[:end_at])
          @purchase_record_products = @purchase_record_products.where(created_at: start_at..end_at)
      end
    end
end

$ heroku login -i
Enter your Heroku credentials.
Email: Herokuに登録したメールアドレスを入力
Password: Herokuに登録したパスワードを入力
$ heroku create my-ecsite
$ heroku apps
my-ecsite

$ git remote -v
heroku  https://git.heroku.com/my-ecsite.git (fetch)
heroku  https://git.heroku.com/my-ecsite.git (push)

group :production do
  gem 'pg', '>= 0.18', '< 2.0'
end

bundle install --without production

$ git push heroku master
remote:  !     Push rejected, failed to compile Ruby app.
remote: 
remote:  !     Push failed
remote: !
remote:  ! ## Warning - The same version of this code has already been built: 93a6c27708271ca534f254c00f6f019d6a39e97f
remote:  !
remote:  ! We have detected that you have triggered a build from source code with version 93a6c27708271ca534f254c00f6f019d6a39e97f
remote:  ! at least twice. One common cause of this behavior is attempting to deploy code from a different branch.
remote:  !
remote:  ! If you are developing on a branch and deploying via git you must run:
remote:  !
remote:  !     git push heroku <branchname>:main
remote:  !
remote:  ! This article goes into details on the behavior:
remote:  !   https://devcenter.heroku.com/articles/duplicate-build-version
remote: 
remote: Verifying deploy...
remote: 
remote: !       Push rejected to my-ecsite.
remote: 
To https://git.heroku.com/my-ecsite.git
 ! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/my-ecsite.git'

Missing encryption key to decrypt file with. Ask your team for your master key and write it to /tmp/build_2e508c58/config/master.
key or put it in the ENV['RAILS_MASTER_KEY'].

$heroku config:set RAILS_MASTER_KEY=`rake secret`

$heroku run rails db:migrate

$ heroku plugins:install heroku-config
$ heroku config:push
$ heroku config
$ heroku config:set ENV_VAR_NAME="value"