Adopt model to allow FinancialTransaction without an ordergroup

This will allow us to add accounting for the foodcoop itself, to support
listing for spendings independent of the order (e.g. rent, electricity).

app/controllers/application_controller.rb

@@ -3,6 +3,7 @@ class ApplicationController < ActionController::Base
   include Concerns::FoodcoopScope
   include Concerns::Auth
   include Concerns::Locale
+  include PathHelper
   helper_method :current_user
   helper_method :available_locales
 

app/controllers/finance/base_controller.rb

@@ -2,7 +2,7 @@ class Finance::BaseController < ApplicationController
   before_action :authenticate_finance
 
   def index
-    @financial_transactions = FinancialTransaction.includes(:ordergroup).order('created_on DESC').limit(8)
+    @financial_transactions = FinancialTransaction.with_ordergroup.includes(:ordergroup).order(created_on: :desc).limit(8)
     @orders = Order.finished_not_closed.includes(:supplier).limit(8)
     @unpaid_invoices = Invoice.unpaid.includes(:supplier).limit(8)
 

app/controllers/finance/financial_links_controller.rb

@@ -16,7 +16,7 @@ class Finance::FinancialLinksController < Finance::BaseController
       {
         date: ft.created_on,
         type: t('activerecord.models.financial_transaction'),
-        description: "#{ft.ordergroup.name}: #{ft.note}",
+        description: "#{ft.ordergroup_name}: #{ft.note}",
         amount: ft.amount,
         link_to: finance_ordergroup_transactions_path(ft.ordergroup),
         remove_path: remove_financial_transaction_finance_link_path(@financial_link, ft)

app/models/financial_transaction.rb

@@ -9,12 +9,13 @@ class FinancialTransaction < ApplicationRecord
   belongs_to :reverts, class_name: 'FinancialTransaction', foreign_key: 'reverts_id'
   has_one :reverted_by, class_name: 'FinancialTransaction', foreign_key: 'reverts_id'
 
-  validates_presence_of :amount, :note, :user_id, :ordergroup_id
+  validates_presence_of :amount, :note, :user_id
   validates_numericality_of :amount, greater_then: -100_000,
     less_than: 100_000
 
   scope :visible, -> { joins('LEFT JOIN financial_transactions r ON financial_transactions.id = r.reverts_id').where('r.id IS NULL').where(reverts: nil) }
   scope :without_financial_link, -> { where(financial_link: nil) }
+  scope :with_ordergroup, -> { where.not(ordergroup: nil) }
 
   localize_input_of :amount
 
@@ -54,6 +55,10 @@ class FinancialTransaction < ApplicationRecord
     reverts.present? || reverted_by.present?
   end
 
+  def ordergroup_name
+    ordergroup ? ordergroup.name : I18n.t('model.financial_transaction.foodcoop_name')
+  end
+
   # @todo rename in model, see #575
   def created_at
     created_on

app/views/finance/financial_links/_index_financial_transaction.html.haml

@@ -14,7 +14,7 @@
       - for t in @financial_transactions
         %tr
           %td= link_to format_time(t.created_on), add_financial_transaction_finance_link_path(@financial_link, financial_transaction: t.id), method: :put
-          %td= t.ordergroup.name
+          %td= t.ordergroup_name
           - if FinancialTransactionType.has_multiple_types
             %td= h t.financial_transaction_type.name
           %td= number_to_currency t.amount

app/views/finance/financial_transactions/_transactions.html.haml

@@ -34,7 +34,7 @@
           - else
             = format_time(t.created_on)
         - if with_ordergroup
-          %td= h link_to t.ordergroup.name, finance_ordergroup_transactions_path(t.ordergroup)
+          %td= h link_to t.ordergroup_name, finance_ordergroup_transactions_path(t.ordergroup)
         %td= h show_user(t.user)
         - if FinancialTransactionType.has_multiple_types
           %td= h t.financial_transaction_type.name

app/views/finance/index.html.haml

@@ -34,7 +34,7 @@
         - @financial_transactions.each do |ft|
           %tr
             %td= format_date(ft.created_on)
-            %td= ft.ordergroup.name
+            %td= ft.ordergroup_name
             %td= ft.note
             %td.numeric= format_currency ft.amount
   .span6