Show the financial transaction type if there are more than one type #367

app/models/financial_transaction_class.rb

@@ -3,4 +3,18 @@ class FinancialTransactionClass < ActiveRecord::Base
 
   validates :name, presence: true
   validates_uniqueness_of :name
+
+  scope :sorted, -> { order(name: :asc) }
+
+  def self.has_multiple_classes
+    FinancialTransactionClass.count > 1
+  end
+
+  def display
+    if FinancialTransactionClass.has_multiple_classes
+      name
+    else
+      I18n.t('activerecord.attributes.financial_transaction.amount')
+    end
+  end
 end