add view for all transactions + csv

lib/financial_transactions_csv.rb

@@ -0,0 +1,29 @@
+require 'csv'
+
+class FinancialTransactionsCsv < RenderCSV
+  include ApplicationHelper
+
+  def header
+    [
+      FinancialTransaction.human_attribute_name(:created_on),
+      FinancialTransaction.human_attribute_name(:ordergroup),
+      FinancialTransaction.human_attribute_name(:ordergroup),
+      FinancialTransaction.human_attribute_name(:user),
+      FinancialTransaction.human_attribute_name(:note),
+      FinancialTransaction.human_attribute_name(:amount)
+    ]
+  end
+
+  def data
+    @object.includes(:user, :ordergroup).each do |t|
+      yield [
+              t.created_on,
+              t.ordergroup_id,
+              t.ordergroup.name,
+              show_user(t.user),
+              t.note,
+              number_to_currency(t.amount)
+            ]
+    end
+  end
+end