adds budgets_helper

app/helpers/budgets_helper.rb

@@ -0,0 +1,11 @@
+module BudgetsHelper
+
+  def budget_phases_select_options
+    Budget::VALID_PHASES.map { |ph| [ t("budget.phase.#{ph}"), ph ] }
+  end
+
+  def budget_currency_symbol_select_options
+    Budget::CURRENCY_SYMBOLS.map { |cs| [ cs, cs ] }
+  end
+
+end

app/models/budget.rb

@@ -1,7 +1,9 @@
 class Budget < ActiveRecord::Base
 
   VALID_PHASES = %W{on_hold accepting selecting balloting finished}
+  CURRENCY_SYMBOLS = %W{€ $ £ ¥}
 
+  validates :name, presence: true
   validates :phase, inclusion: { in: VALID_PHASES }
 
   has_many :investments, dependent: :destroy