[refs #674] fix get last published commit

app/models/build_list.rb

@@ -219,7 +219,7 @@ class BuildList < ActiveRecord::Base
   def actualize_packages
     ActiveRecord::Base.transaction do
       # packages from previous build_list
-      self.last_published.packages.update_all :actual => false
+      self.last_published.limit(2).last.packages.update_all :actual => false
       self.packages.update_all :actual => true
     end
   end
@@ -439,6 +439,6 @@ class BuildList < ActiveRecord::Base
              .for_platform(self.build_for_platform_id)
              .scoped_to_arch(self.arch_id)
              .for_status(BUILD_PUBLISHED)
-             .recent.limit(2).last
+             .recent
   end
 end

lib/modules/models/commit_and_version.rb

@@ -28,8 +28,10 @@ module Modules
       end
 
       def set_last_published_commit
-        if self.respond_to? :last_published_commit_hash
-          self.last_published_commit_hash = self.last_published.try :commit_hash
+        return unless self.respond_to? :last_published_commit_hash # product?
+        last_commit = self.last_published.first.try :commit_hash
+        if last_commit && self.project.repo.commit(last_commit).present? # commit(nil) is not nil!
+          self.last_published_commit_hash = last_commit
         end
       end
     end