order query on time

app/controllers/concerns/data_table.rb

@@ -30,7 +30,7 @@ class DataTable
   end
 
   def query
-    q = @transactions.query
+    q = @transactions.query.order(@table[:time].desc)
     q.where(predicate) if predicate
     q
   end

app/controllers/concerns/transactions_query.rb

@@ -12,6 +12,7 @@ class TransactionsQuery
   def query
     Arel::SelectManager.new(ActiveRecord::Base)
       .from(arel)
+      .order(@arel_table[:time].desc)
   end
 
   def arel