Merge pull request #295 from abf/rosa-build:fix-platform-arch-settings

Fix: platform-arch-settings

app/helpers/platforms_helper.rb

@@ -12,7 +12,12 @@ module PlatformsHelper
 
   def platform_arch_settings(platform)
     settings  = platform.platform_arch_settings
-    settings |= Arch.where('id not in (?)', settings.map(&:arch_id)).map do |arch|
+    arches    = if arch_ids = settings.map(&:arch_id) && arch_ids.present?
+                  Arch.where('id not in (?)', arch_ids)
+                else
+                  Arch.all
+                end
+    settings |= arches.map do |arch|
       platform.platform_arch_settings.build(
         :arch_id      => arch.id,
         :time_living  => PlatformArchSetting::DEFAULT_TIME_LIVING