Handle null/undefined cases for price

app/assets/javascripts/admin/utils/filters/unlocalize_currency.js.coffee

@@ -1,6 +1,8 @@
 angular.module("admin.utils").filter "unlocalizeCurrency", ()->
   # Convert string to number using injected currency configuration.
   (price) ->
+    if (!price)
+      return null
     # used decimal and thousands separators from currency configuration
     decimal_separator = I18n.toCurrency(.1, {precision: 1, unit: ''}).substring(1,2)
     thousands_separator = I18n.toCurrency(1000, {precision: 1, unit: ''}).substring(1,2)

spec/javascripts/unit/admin/filters/unlocalize_currency_spec.js.coffee

@@ -89,3 +89,10 @@ describe 'convert string to number with configurated currency', ->
 
     it "handle integer number with no thousands separator", ->
       expect(filter("1000")).toEqual 1000
+  
+  describe "handle null/undefined case", ->
+    it "null case", ->
+      expect(filter(null)).toEqual null
+    
+    it "undefined case ", ->
+      expect(filter(undefined)).toEqual null