Move `create_binds` over to the `PredicateBuilder`

I'm looking to introduce a `WhereClause` class to handle most of this
logic, and this method will eventually move over to there. However, this
intermediate refactoring should make that easier to do.

1 files changed, 6 insertions, 0 deletions

diff --git a/activerecord/lib/active_record/table_metadata.rb b/activerecord/lib/active_record/table_metadata.rb
index 11e33e8dfe..31a40adb67 100644
--- a/activerecord/lib/active_record/table_metadata.rb
+++ b/activerecord/lib/active_record/table_metadata.rb
@@ -22,6 +22,12 @@ module ActiveRecord
       arel_table[column_name]
     end
 
+    def column(column_name)
+      if klass
+        klass.columns_hash[column_name.to_s]
+      end
+    end
+
     def associated_with?(association_name)
       klass && klass._reflect_on_association(association_name)
     end