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-rw-r--r--lib/arel.rb2
-rw-r--r--lib/arel/relation.rb6
-rw-r--r--lib/arel/tree_manager.rb2
3 files changed, 10 insertions, 0 deletions
diff --git a/lib/arel.rb b/lib/arel.rb
index 6d7aec64b1..b27da2fb05 100644
--- a/lib/arel.rb
+++ b/lib/arel.rb
@@ -12,6 +12,8 @@ require 'arel/attributes'
require 'arel/compatibility/wheres'
#### these are deprecated
+# The Arel::Relation constant is referenced in Rails
+require 'arel/relation'
require 'arel/expression'
####
diff --git a/lib/arel/relation.rb b/lib/arel/relation.rb
new file mode 100644
index 0000000000..87786d7701
--- /dev/null
+++ b/lib/arel/relation.rb
@@ -0,0 +1,6 @@
+module Arel
+ ###
+ # This is deprecated. Fix rails, then remove this.
+ module Relation
+ end
+end
diff --git a/lib/arel/tree_manager.rb b/lib/arel/tree_manager.rb
index 21a52d8a60..99a7164e2e 100644
--- a/lib/arel/tree_manager.rb
+++ b/lib/arel/tree_manager.rb
@@ -1,5 +1,7 @@
module Arel
class TreeManager
+ # FIXME: Remove this.
+ include Arel::Relation
include Arel::FactoryMethods
attr_reader :ast, :engine