Hi, It seems to me that this bug should be reassigned to ruby-activerecord-3.2. The Arel::Relation module was already empty in the 3.2 version of Arel (and mentionned as deprecated).
There is a patch upstream to remove (useless) usage of Arel::Relation in ruby-activerecord. https://github.com/rails/rails/commit/2fa7ccf7aee3696e99f1b528db848aff5a671f77 I've successfully installed redmine-sql with a version of ruby-activerecord-3.2 with a trivial backport of this patch (attached) and ruby-arel 4.0-1 from the archive. Cédric
Description: Remove Arel::Relation constant from PredicateBuilder. Origin: https://github.com/rails/rails/commit/2fa7ccf7aee3696e99f1b528db848aff5a671f77 Bug-Debian: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=720141 Author: Juanjo Bazán <jjba...@gmail.com> Reviewed-by: Cédric Boutillier <bou...@debian.org> Last-Update: 2013-08-21 --- activerecord/lib/active_record/relation/predicate_builder.rb | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/lib/active_record/relation/predicate_builder.rb +++ b/lib/active_record/relation/predicate_builder.rb @@ -28,7 +28,7 @@ attribute.in(value.arel.ast) when Array, ActiveRecord::Associations::CollectionProxy values = value.to_a.map {|x| x.is_a?(ActiveRecord::Base) ? x.id : x} - ranges, values = values.partition {|v| v.is_a?(Range) || v.is_a?(Arel::Relation)} + ranges, values = values.partition {|v| v.is_a?(Range)} array_predicates = ranges.map {|range| attribute.in(range)} @@ -44,7 +44,7 @@ end array_predicates.inject {|composite, predicate| composite.or(predicate)} - when Range, Arel::Relation + when Range attribute.in(value) when ActiveRecord::Base attribute.eq(value.id)
