Merge pull request rsim#2159 from yahonda/diag2158

Address undefined method `to_i' for #<ActiveModel::Attribute::WithCastValue

Author: yahonda

lib/arel/visitors/oracle.rb

@@ -28,7 +28,7 @@ def visit_Arel_Nodes_SelectStatement(o, collector)
 
             collector = super(o, collector)
 
-            if offset.expr.is_a? Nodes::BindParam
+            if offset.expr.type.is_a? ActiveModel::Type::Value
               collector << ") raw_sql_ WHERE rownum <= ("
               collector = visit offset.expr, collector
               collector << " + "
@@ -38,7 +38,7 @@ def visit_Arel_Nodes_SelectStatement(o, collector)
               return collector
             else
               collector << ") raw_sql_
-                  WHERE rownum <= #{offset.expr.to_i + limit}
+                  WHERE rownum <= #{offset.expr.value_before_type_cast + limit.value_before_type_cast}
                 )
                 WHERE "
               return visit(offset, collector)