app/documents/group_order_invoice_pdf.rb

@@ -63,7 +63,8 @@ class GroupOrderInvoicePdf < RenderPdf
     end
 
     move_down 20
-    text I18n.t('documents.group_order_invoice_pdf.payment_method', payment_method: @options[:payment_method])
+    text I18n.t('documents.group_order_invoice_pdf.payment_method', payment_method: FinancialTransactionType.find(@options[:payment_method]).name)
+
     text I18n.t('documents.group_order_invoice_pdf.table_headline')
     move_down 5
 

app/models/group_order_invoice.rb

@@ -41,7 +41,7 @@ class GroupOrderInvoice < ApplicationRecord
   def init
     self.invoice_date = Time.now unless invoice_date
     self.invoice_number = generate_invoice_number(1) unless self.invoice_number
-    self.payment_method = group_order&.financial_transaction&.financial_transaction_type&.name || FoodsoftConfig[:group_order_invoices]&.[](:payment_method) || I18n.t('activerecord.attributes.group_order_invoice.payment_method') unless self.payment_method
+    self.payment_method = FoodsoftConfig[:group_order_invoices]&.[](:payment_method) || I18n.t('activerecord.attributes.group_order_invoice.payment_method') unless self.payment_method
   end
 
   def name

db/migrate/20231211121430_change_group_order_invoice_payment_method.rb

@@ -1,15 +0,0 @@
-class ChangeGroupOrderInvoicePaymentMethod < ActiveRecord::Migration[7.0]
-  def change
-    GroupOrderInvoice.all.each do |group_order_invoice|
-      case group_order_invoice.payment_method
-      when 'Guthaben'
-        group_order_invoice.payment_method = 'Guthaben'
-      when /\A\d+\z/
-        group_order_invoice.payment_method = FinancialTransactionType.find_by(id: group_order_invoice.payment_method)&.name || 'Guthaben'
-      else
-        group_order_invoice.payment_method = group_order_invoice.payment_method || 'Guthaben'
-      end
-      group_order_invoice.save!
-    end
-  end
-end

db/schema.rb

@@ -10,7 +10,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema[7.0].define(version: 2023_12_11_121430) do
+ActiveRecord::Schema[7.0].define(version: 2023_11_28_133642) do
   create_table "action_text_rich_texts", charset: "utf8mb4", force: :cascade do |t|
     t.string "name", null: false
     t.text "body", size: :long