From 5e4a5b727ce47b1b01a0f7a8b3c1077efc703a3c Mon Sep 17 00:00:00 2001
From: Felix Van der Jeugt <felix.vanderjeugt@gmail.com>
Date: Wed, 9 Sep 2015 22:22:31 +0200
Subject: [PATCH] add pagination

---
 app/controllers/concerns/data_table.rb | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/app/controllers/concerns/data_table.rb b/app/controllers/concerns/data_table.rb
index b9cc210..c8dacc8 100644
--- a/app/controllers/concerns/data_table.rb
+++ b/app/controllers/concerns/data_table.rb
@@ -4,7 +4,7 @@ module DataTable
 
   def apply_filter(user, params)
     params = sanitize_params(params)
-    selection_to_json(user, params[:draw], user.transactions)
+    selection_to_json user, params, user.transactions
   end
 
   private
@@ -37,12 +37,11 @@ module DataTable
   end
 
   def selection_to_json(user, draw, selection)
-    selection = selection.to_a
     {
       draw: draw,
       recordsTotal: user.transactions.count,
       recordsFiltered: selection.count,
-      data: selection.map { |transaction| {
+      data: selection.offset(params[:start]).take(params[:length]).map { |transaction| {
         time: transaction.created_at,
         amount: transaction.signed_amount_for(user),
         peer: transaction.peer_of(user).try(:name),